diff --git a/packages/frontend/src/account.ts b/packages/frontend/src/account.ts
index 25af29891..b01a80d13 100644
--- a/packages/frontend/src/account.ts
+++ b/packages/frontend/src/account.ts
@@ -11,7 +11,8 @@ import { miLocalStorage } from '@/local-storage.js';
 import { MenuButton } from '@/types/menu.js';
 import { del, get, set } from '@/scripts/idb-proxy.js';
 import { apiUrl } from '@/config.js';
-import { waiting, api, popup, popupMenu, success, alert } from '@/os.js';
+import { waiting, popup, popupMenu, success, alert } from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { unisonReload, reloadChannel } from '@/scripts/unison-reload.js';
 
 // TODO: 他のタブと永続化されたstateを同期
@@ -251,7 +252,7 @@ export async function openAccountMenu(opts: {
 	}
 
 	const storedAccounts = await getAccounts().then(accounts => accounts.filter(x => x.id !== $i.id));
-	const accountsPromise = api('users/show', { userIds: storedAccounts.map(x => x.id) });
+	const accountsPromise = misskeyApi('users/show', { userIds: storedAccounts.map(x => x.id) });
 
 	function createItem(account: Misskey.entities.UserDetailed) {
 		return {
diff --git a/packages/frontend/src/cache.ts b/packages/frontend/src/cache.ts
index 25d2b3c15..20950add8 100644
--- a/packages/frontend/src/cache.ts
+++ b/packages/frontend/src/cache.ts
@@ -5,9 +5,9 @@
 
 import * as Misskey from 'misskey-js';
 import { Cache } from '@/scripts/cache.js';
-import { api } from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 
-export const clipsCache = new Cache<Misskey.entities.Clip[]>(1000 * 60 * 30, () => api('clips/list'));
-export const rolesCache = new Cache(1000 * 60 * 30, () => api('admin/roles/list'));
-export const userListsCache = new Cache<Misskey.entities.UserList[]>(1000 * 60 * 30, () => api('users/lists/list'));
-export const antennasCache = new Cache<Misskey.entities.Antenna[]>(1000 * 60 * 30, () => api('antennas/list'));
+export const clipsCache = new Cache<Misskey.entities.Clip[]>(1000 * 60 * 30, () => misskeyApi('clips/list'));
+export const rolesCache = new Cache(1000 * 60 * 30, () => misskeyApi('admin/roles/list'));
+export const userListsCache = new Cache<Misskey.entities.UserList[]>(1000 * 60 * 30, () => misskeyApi('users/lists/list'));
+export const antennasCache = new Cache<Misskey.entities.Antenna[]>(1000 * 60 * 30, () => misskeyApi('antennas/list'));
diff --git a/packages/frontend/src/components/MkAccountMoved.vue b/packages/frontend/src/components/MkAccountMoved.vue
index 155d9fe3a..a5b43d3c6 100644
--- a/packages/frontend/src/components/MkAccountMoved.vue
+++ b/packages/frontend/src/components/MkAccountMoved.vue
@@ -17,7 +17,7 @@ import * as Misskey from 'misskey-js';
 import MkMention from './MkMention.vue';
 import { i18n } from '@/i18n.js';
 import { host as localHost } from '@/config.js';
-import { api } from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 
 const user = ref<Misskey.entities.UserLite>();
 
@@ -25,7 +25,7 @@ const props = defineProps<{
 	movedTo: string; // user id
 }>();
 
-api('users/show', { userId: props.movedTo }).then(u => user.value = u);
+misskeyApi('users/show', { userId: props.movedTo }).then(u => user.value = u);
 </script>
 
 <style lang="scss" module>
diff --git a/packages/frontend/src/components/MkAchievements.vue b/packages/frontend/src/components/MkAchievements.vue
index d49eeb032..1137eaf97 100644
--- a/packages/frontend/src/components/MkAchievements.vue
+++ b/packages/frontend/src/components/MkAchievements.vue
@@ -55,6 +55,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 import * as Misskey from 'misskey-js';
 import { onMounted, ref, computed } from 'vue';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { i18n } from '@/i18n.js';
 import { ACHIEVEMENT_TYPES, ACHIEVEMENT_BADGES, claimAchievement } from '@/scripts/achievements.js';
 
@@ -71,7 +72,7 @@ const achievements = ref<Misskey.entities.UsersAchievementsResponse | null>(null
 const lockedAchievements = computed(() => ACHIEVEMENT_TYPES.filter(x => !(achievements.value ?? []).some(a => a.name === x)));
 
 function fetch() {
-	os.api('users/achievements', { userId: props.user.id }).then(res => {
+	misskeyApi('users/achievements', { userId: props.user.id }).then(res => {
 		achievements.value = [];
 		for (const t of ACHIEVEMENT_TYPES) {
 			const a = res.find(x => x.name === t);
diff --git a/packages/frontend/src/components/MkAnnouncementDialog.vue b/packages/frontend/src/components/MkAnnouncementDialog.vue
index aaac3dd29..c649e69cd 100644
--- a/packages/frontend/src/components/MkAnnouncementDialog.vue
+++ b/packages/frontend/src/components/MkAnnouncementDialog.vue
@@ -25,6 +25,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 import { onMounted, shallowRef } from 'vue';
 import * as Misskey from 'misskey-js';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import MkModal from '@/components/MkModal.vue';
 import MkButton from '@/components/MkButton.vue';
 import { i18n } from '@/i18n.js';
@@ -49,7 +50,7 @@ async function ok() {
 	}
 
 	modal.value.close();
-	os.api('i/read-announcement', { announcementId: props.announcement.id });
+	misskeyApi('i/read-announcement', { announcementId: props.announcement.id });
 	updateAccount({
 		unreadAnnouncements: $i!.unreadAnnouncements.filter(a => a.id !== props.announcement.id),
 	});
diff --git a/packages/frontend/src/components/MkAutocomplete.vue b/packages/frontend/src/components/MkAutocomplete.vue
index 494d120a9..49884c705 100644
--- a/packages/frontend/src/components/MkAutocomplete.vue
+++ b/packages/frontend/src/components/MkAutocomplete.vue
@@ -45,6 +45,7 @@ import contains from '@/scripts/contains.js';
 import { char2twemojiFilePath, char2fluentEmojiFilePath } from '@/scripts/emoji-base.js';
 import { acct } from '@/filters/user.js';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { defaultStore } from '@/store.js';
 import { emojilist, getEmojiName } from '@/scripts/emojilist.js';
 import { i18n } from '@/i18n.js';
@@ -201,7 +202,7 @@ function exec() {
 			users.value = JSON.parse(cache);
 			fetching.value = false;
 		} else {
-			os.api('users/search-by-username-and-host', {
+			misskeyApi('users/search-by-username-and-host', {
 				username: props.q,
 				limit: 10,
 				detail: false,
@@ -224,7 +225,7 @@ function exec() {
 				hashtags.value = hashtags;
 				fetching.value = false;
 			} else {
-				os.api('hashtags/search', {
+				misskeyApi('hashtags/search', {
 					query: props.q,
 					limit: 30,
 				}).then(searchedHashtags => {
diff --git a/packages/frontend/src/components/MkAvatars.vue b/packages/frontend/src/components/MkAvatars.vue
index 5644a324c..6ef4a7dfe 100644
--- a/packages/frontend/src/components/MkAvatars.vue
+++ b/packages/frontend/src/components/MkAvatars.vue
@@ -15,7 +15,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 <script lang="ts" setup>
 import { onMounted, ref } from 'vue';
 import * as Misskey from 'misskey-js';
-import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 
 const props = withDefaults(defineProps<{
 	userIds: string[];
@@ -27,7 +27,7 @@ const props = withDefaults(defineProps<{
 const users = ref<Misskey.entities.UserLite[]>([]);
 
 onMounted(async () => {
-	users.value = await os.api('users/show', {
+	users.value = await misskeyApi('users/show', {
 		userIds: props.userIds,
 	}) as unknown as Misskey.entities.UserLite[];
 });
diff --git a/packages/frontend/src/components/MkChannelFollowButton.vue b/packages/frontend/src/components/MkChannelFollowButton.vue
index 41b02a7e3..8a1d04e9c 100644
--- a/packages/frontend/src/components/MkChannelFollowButton.vue
+++ b/packages/frontend/src/components/MkChannelFollowButton.vue
@@ -26,7 +26,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 <script lang="ts" setup>
 import { ref } from 'vue';
-import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { i18n } from '@/i18n.js';
 
 const props = withDefaults(defineProps<{
@@ -44,12 +44,12 @@ async function onClick() {
 
 	try {
 		if (isFollowing.value) {
-			await os.api('channels/unfollow', {
+			await misskeyApi('channels/unfollow', {
 				channelId: props.channel.id,
 			});
 			isFollowing.value = false;
 		} else {
-			await os.api('channels/follow', {
+			await misskeyApi('channels/follow', {
 				channelId: props.channel.id,
 			});
 			isFollowing.value = true;
diff --git a/packages/frontend/src/components/MkChart.vue b/packages/frontend/src/components/MkChart.vue
index adb3c134a..82605123c 100644
--- a/packages/frontend/src/components/MkChart.vue
+++ b/packages/frontend/src/components/MkChart.vue
@@ -22,7 +22,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 import { onMounted, ref, shallowRef, watch, PropType } from 'vue';
 import { Chart } from 'chart.js';
 import gradient from 'chartjs-plugin-gradient';
-import * as os from '@/os.js';
+import { misskeyApiGet } from '@/scripts/misskey-api.js';
 import { defaultStore } from '@/store.js';
 import { useChartTooltip } from '@/scripts/use-chart-tooltip.js';
 import { chartVLine } from '@/scripts/chart-vline.js';
@@ -277,7 +277,7 @@ const exportData = () => {
 };
 
 const fetchFederationChart = async (): Promise<typeof chartData> => {
-	const raw = await os.apiGet('charts/federation', { limit: props.limit, span: props.span });
+	const raw = await misskeyApiGet('charts/federation', { limit: props.limit, span: props.span });
 	return {
 		series: [{
 			name: 'Received',
@@ -327,7 +327,7 @@ const fetchFederationChart = async (): Promise<typeof chartData> => {
 };
 
 const fetchApRequestChart = async (): Promise<typeof chartData> => {
-	const raw = await os.apiGet('charts/ap-request', { limit: props.limit, span: props.span });
+	const raw = await misskeyApiGet('charts/ap-request', { limit: props.limit, span: props.span });
 	return {
 		series: [{
 			name: 'In',
@@ -349,7 +349,7 @@ const fetchApRequestChart = async (): Promise<typeof chartData> => {
 };
 
 const fetchNotesChart = async (type: string): Promise<typeof chartData> => {
-	const raw = await os.apiGet('charts/notes', { limit: props.limit, span: props.span });
+	const raw = await misskeyApiGet('charts/notes', { limit: props.limit, span: props.span });
 	return {
 		series: [{
 			name: 'All',
@@ -396,7 +396,7 @@ const fetchNotesChart = async (type: string): Promise<typeof chartData> => {
 };
 
 const fetchNotesTotalChart = async (): Promise<typeof chartData> => {
-	const raw = await os.apiGet('charts/notes', { limit: props.limit, span: props.span });
+	const raw = await misskeyApiGet('charts/notes', { limit: props.limit, span: props.span });
 	return {
 		series: [{
 			name: 'Combined',
@@ -415,7 +415,7 @@ const fetchNotesTotalChart = async (): Promise<typeof chartData> => {
 };
 
 const fetchUsersChart = async (total: boolean): Promise<typeof chartData> => {
-	const raw = await os.apiGet('charts/users', { limit: props.limit, span: props.span });
+	const raw = await misskeyApiGet('charts/users', { limit: props.limit, span: props.span });
 	return {
 		series: [{
 			name: 'Combined',
@@ -443,7 +443,7 @@ const fetchUsersChart = async (total: boolean): Promise<typeof chartData> => {
 };
 
 const fetchActiveUsersChart = async (): Promise<typeof chartData> => {
-	const raw = await os.apiGet('charts/active-users', { limit: props.limit, span: props.span });
+	const raw = await misskeyApiGet('charts/active-users', { limit: props.limit, span: props.span });
 	return {
 		series: [{
 			name: 'Read & Write',
@@ -495,7 +495,7 @@ const fetchActiveUsersChart = async (): Promise<typeof chartData> => {
 };
 
 const fetchDriveChart = async (): Promise<typeof chartData> => {
-	const raw = await os.apiGet('charts/drive', { limit: props.limit, span: props.span });
+	const raw = await misskeyApiGet('charts/drive', { limit: props.limit, span: props.span });
 	return {
 		bytes: true,
 		series: [{
@@ -531,7 +531,7 @@ const fetchDriveChart = async (): Promise<typeof chartData> => {
 };
 
 const fetchDriveFilesChart = async (): Promise<typeof chartData> => {
-	const raw = await os.apiGet('charts/drive', { limit: props.limit, span: props.span });
+	const raw = await misskeyApiGet('charts/drive', { limit: props.limit, span: props.span });
 	return {
 		series: [{
 			name: 'All',
@@ -566,7 +566,7 @@ const fetchDriveFilesChart = async (): Promise<typeof chartData> => {
 };
 
 const fetchInstanceRequestsChart = async (): Promise<typeof chartData> => {
-	const raw = await os.apiGet('charts/instance', { host: props.args.host, limit: props.limit, span: props.span });
+	const raw = await misskeyApiGet('charts/instance', { host: props.args.host, limit: props.limit, span: props.span });
 	return {
 		series: [{
 			name: 'In',
@@ -588,7 +588,7 @@ const fetchInstanceRequestsChart = async (): Promise<typeof chartData> => {
 };
 
 const fetchInstanceUsersChart = async (total: boolean): Promise<typeof chartData> => {
-	const raw = await os.apiGet('charts/instance', { host: props.args.host, limit: props.limit, span: props.span });
+	const raw = await misskeyApiGet('charts/instance', { host: props.args.host, limit: props.limit, span: props.span });
 	return {
 		series: [{
 			name: 'Users',
@@ -603,7 +603,7 @@ const fetchInstanceUsersChart = async (total: boolean): Promise<typeof chartData
 };
 
 const fetchInstanceNotesChart = async (total: boolean): Promise<typeof chartData> => {
-	const raw = await os.apiGet('charts/instance', { host: props.args.host, limit: props.limit, span: props.span });
+	const raw = await misskeyApiGet('charts/instance', { host: props.args.host, limit: props.limit, span: props.span });
 	return {
 		series: [{
 			name: 'Notes',
@@ -618,7 +618,7 @@ const fetchInstanceNotesChart = async (total: boolean): Promise<typeof chartData
 };
 
 const fetchInstanceFfChart = async (total: boolean): Promise<typeof chartData> => {
-	const raw = await os.apiGet('charts/instance', { host: props.args.host, limit: props.limit, span: props.span });
+	const raw = await misskeyApiGet('charts/instance', { host: props.args.host, limit: props.limit, span: props.span });
 	return {
 		series: [{
 			name: 'Following',
@@ -641,7 +641,7 @@ const fetchInstanceFfChart = async (total: boolean): Promise<typeof chartData> =
 };
 
 const fetchInstanceDriveUsageChart = async (total: boolean): Promise<typeof chartData> => {
-	const raw = await os.apiGet('charts/instance', { host: props.args.host, limit: props.limit, span: props.span });
+	const raw = await misskeyApiGet('charts/instance', { host: props.args.host, limit: props.limit, span: props.span });
 	return {
 		bytes: true,
 		series: [{
@@ -657,7 +657,7 @@ const fetchInstanceDriveUsageChart = async (total: boolean): Promise<typeof char
 };
 
 const fetchInstanceDriveFilesChart = async (total: boolean): Promise<typeof chartData> => {
-	const raw = await os.apiGet('charts/instance', { host: props.args.host, limit: props.limit, span: props.span });
+	const raw = await misskeyApiGet('charts/instance', { host: props.args.host, limit: props.limit, span: props.span });
 	return {
 		series: [{
 			name: 'Drive files',
@@ -672,7 +672,7 @@ const fetchInstanceDriveFilesChart = async (total: boolean): Promise<typeof char
 };
 
 const fetchPerUserNotesChart = async (): Promise<typeof chartData> => {
-	const raw = await os.apiGet('charts/user/notes', { userId: props.args.user.id, limit: props.limit, span: props.span });
+	const raw = await misskeyApiGet('charts/user/notes', { userId: props.args.user.id, limit: props.limit, span: props.span });
 	return {
 		series: [...(props.args.withoutAll ? [] : [{
 			name: 'All',
@@ -704,7 +704,7 @@ const fetchPerUserNotesChart = async (): Promise<typeof chartData> => {
 };
 
 const fetchPerUserPvChart = async (): Promise<typeof chartData> => {
-	const raw = await os.apiGet('charts/user/pv', { userId: props.args.user.id, limit: props.limit, span: props.span });
+	const raw = await misskeyApiGet('charts/user/pv', { userId: props.args.user.id, limit: props.limit, span: props.span });
 	return {
 		series: [{
 			name: 'Unique PV (user)',
@@ -731,7 +731,7 @@ const fetchPerUserPvChart = async (): Promise<typeof chartData> => {
 };
 
 const fetchPerUserFollowingChart = async (): Promise<typeof chartData> => {
-	const raw = await os.apiGet('charts/user/following', { userId: props.args.user.id, limit: props.limit, span: props.span });
+	const raw = await misskeyApiGet('charts/user/following', { userId: props.args.user.id, limit: props.limit, span: props.span });
 	return {
 		series: [{
 			name: 'Local',
@@ -746,7 +746,7 @@ const fetchPerUserFollowingChart = async (): Promise<typeof chartData> => {
 };
 
 const fetchPerUserFollowersChart = async (): Promise<typeof chartData> => {
-	const raw = await os.apiGet('charts/user/following', { userId: props.args.user.id, limit: props.limit, span: props.span });
+	const raw = await misskeyApiGet('charts/user/following', { userId: props.args.user.id, limit: props.limit, span: props.span });
 	return {
 		series: [{
 			name: 'Local',
@@ -761,7 +761,7 @@ const fetchPerUserFollowersChart = async (): Promise<typeof chartData> => {
 };
 
 const fetchPerUserDriveChart = async (): Promise<typeof chartData> => {
-	const raw = await os.apiGet('charts/user/drive', { userId: props.args.user.id, limit: props.limit, span: props.span });
+	const raw = await misskeyApiGet('charts/user/drive', { userId: props.args.user.id, limit: props.limit, span: props.span });
 	return {
 		series: [{
 			name: 'Inc',
diff --git a/packages/frontend/src/components/MkDrive.folder.vue b/packages/frontend/src/components/MkDrive.folder.vue
index b0c14d1f0..0d02aa5cb 100644
--- a/packages/frontend/src/components/MkDrive.folder.vue
+++ b/packages/frontend/src/components/MkDrive.folder.vue
@@ -35,6 +35,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 import { computed, defineAsyncComponent, ref } from 'vue';
 import * as Misskey from 'misskey-js';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { i18n } from '@/i18n.js';
 import { defaultStore } from '@/store.js';
 import { claimAchievement } from '@/scripts/achievements.js';
@@ -144,7 +145,7 @@ function onDrop(ev: DragEvent) {
 	if (driveFile != null && driveFile !== '') {
 		const file = JSON.parse(driveFile);
 		emit('removeFile', file.id);
-		os.api('drive/files/update', {
+		misskeyApi('drive/files/update', {
 			fileId: file.id,
 			folderId: props.folder.id,
 		});
@@ -160,7 +161,7 @@ function onDrop(ev: DragEvent) {
 		if (folder.id === props.folder.id) return;
 
 		emit('removeFolder', folder.id);
-		os.api('drive/folders/update', {
+		misskeyApi('drive/folders/update', {
 			folderId: folder.id,
 			parentId: props.folder.id,
 		}).then(() => {
@@ -214,7 +215,7 @@ function rename() {
 		default: props.folder.name,
 	}).then(({ canceled, result: name }) => {
 		if (canceled) return;
-		os.api('drive/folders/update', {
+		misskeyApi('drive/folders/update', {
 			folderId: props.folder.id,
 			name: name,
 		});
@@ -222,7 +223,7 @@ function rename() {
 }
 
 function deleteFolder() {
-	os.api('drive/folders/delete', {
+	misskeyApi('drive/folders/delete', {
 		folderId: props.folder.id,
 	}).then(() => {
 		if (defaultStore.state.uploadFolder === props.folder.id) {
diff --git a/packages/frontend/src/components/MkDrive.navFolder.vue b/packages/frontend/src/components/MkDrive.navFolder.vue
index 59458ad56..f66125e3d 100644
--- a/packages/frontend/src/components/MkDrive.navFolder.vue
+++ b/packages/frontend/src/components/MkDrive.navFolder.vue
@@ -20,7 +20,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 <script lang="ts" setup>
 import { ref } from 'vue';
 import * as Misskey from 'misskey-js';
-import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { i18n } from '@/i18n.js';
 
 const props = defineProps<{
@@ -112,7 +112,7 @@ function onDrop(ev: DragEvent) {
 	if (driveFile != null && driveFile !== '') {
 		const file = JSON.parse(driveFile);
 		emit('removeFile', file.id);
-		os.api('drive/files/update', {
+		misskeyApi('drive/files/update', {
 			fileId: file.id,
 			folderId: props.folder ? props.folder.id : null,
 		});
@@ -126,7 +126,7 @@ function onDrop(ev: DragEvent) {
 		// 移動先が自分自身ならreject
 		if (props.folder && folder.id === props.folder.id) return;
 		emit('removeFolder', folder.id);
-		os.api('drive/folders/update', {
+		misskeyApi('drive/folders/update', {
 			folderId: folder.id,
 			parentId: props.folder ? props.folder.id : null,
 		});
diff --git a/packages/frontend/src/components/MkDrive.vue b/packages/frontend/src/components/MkDrive.vue
index 8dff73d99..dbf98cd62 100644
--- a/packages/frontend/src/components/MkDrive.vue
+++ b/packages/frontend/src/components/MkDrive.vue
@@ -102,6 +102,7 @@ import XNavFolder from '@/components/MkDrive.navFolder.vue';
 import XFolder from '@/components/MkDrive.folder.vue';
 import XFile from '@/components/MkDrive.file.vue';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { useStream } from '@/stream.js';
 import { defaultStore } from '@/store.js';
 import { i18n } from '@/i18n.js';
@@ -254,7 +255,7 @@ function onDrop(ev: DragEvent): any {
 		const file = JSON.parse(driveFile);
 		if (files.value.some(f => f.id === file.id)) return;
 		removeFile(file.id);
-		os.api('drive/files/update', {
+		misskeyApi('drive/files/update', {
 			fileId: file.id,
 			folderId: folder.value ? folder.value.id : null,
 		});
@@ -270,7 +271,7 @@ function onDrop(ev: DragEvent): any {
 		if (folder.value && droppedFolder.id === folder.value.id) return false;
 		if (folders.value.some(f => f.id === droppedFolder.id)) return false;
 		removeFolder(droppedFolder.id);
-		os.api('drive/folders/update', {
+		misskeyApi('drive/folders/update', {
 			folderId: droppedFolder.id,
 			parentId: folder.value ? folder.value.id : null,
 		}).then(() => {
@@ -307,7 +308,7 @@ function urlUpload() {
 		placeholder: i18n.ts.uploadFromUrlDescription,
 	}).then(({ canceled, result: url }) => {
 		if (canceled || !url) return;
-		os.api('drive/files/upload-from-url', {
+		misskeyApi('drive/files/upload-from-url', {
 			url: url,
 			folderId: folder.value ? folder.value.id : undefined,
 		});
@@ -325,7 +326,7 @@ function createFolder() {
 		placeholder: i18n.ts.folderName,
 	}).then(({ canceled, result: name }) => {
 		if (canceled) return;
-		os.api('drive/folders/create', {
+		misskeyApi('drive/folders/create', {
 			name: name,
 			parentId: folder.value ? folder.value.id : undefined,
 		}).then(createdFolder => {
@@ -341,7 +342,7 @@ function renameFolder(folderToRename: Misskey.entities.DriveFolder) {
 		default: folderToRename.name,
 	}).then(({ canceled, result: name }) => {
 		if (canceled) return;
-		os.api('drive/folders/update', {
+		misskeyApi('drive/folders/update', {
 			folderId: folderToRename.id,
 			name: name,
 		}).then(updatedFolder => {
@@ -352,7 +353,7 @@ function renameFolder(folderToRename: Misskey.entities.DriveFolder) {
 }
 
 function deleteFolder(folderToDelete: Misskey.entities.DriveFolder) {
-	os.api('drive/folders/delete', {
+	misskeyApi('drive/folders/delete', {
 		folderId: folderToDelete.id,
 	}).then(() => {
 		// 削除時に親フォルダに移動
@@ -436,7 +437,7 @@ function move(target?: Misskey.entities.DriveFolder) {
 
 	fetching.value = true;
 
-	os.api('drive/folders/show', {
+	misskeyApi('drive/folders/show', {
 		folderId: target,
 	}).then(folderToMove => {
 		folder.value = folderToMove;
@@ -535,7 +536,7 @@ async function fetch() {
 	const foldersMax = 30;
 	const filesMax = 30;
 
-	const foldersPromise = os.api('drive/folders', {
+	const foldersPromise = misskeyApi('drive/folders', {
 		folderId: folder.value ? folder.value.id : null,
 		limit: foldersMax + 1,
 	}).then(fetchedFolders => {
@@ -546,7 +547,7 @@ async function fetch() {
 		return fetchedFolders;
 	});
 
-	const filesPromise = os.api('drive/files', {
+	const filesPromise = misskeyApi('drive/files', {
 		folderId: folder.value ? folder.value.id : null,
 		type: props.type,
 		limit: filesMax + 1,
@@ -571,7 +572,7 @@ function fetchMoreFolders() {
 
 	const max = 30;
 
-	os.api('drive/folders', {
+	misskeyApi('drive/folders', {
 		folderId: folder.value ? folder.value.id : null,
 		type: props.type,
 		untilId: folders.value.at(-1)?.id,
@@ -594,7 +595,7 @@ function fetchMoreFiles() {
 	const max = 30;
 
 	// ファイル一覧取得
-	os.api('drive/files', {
+	misskeyApi('drive/files', {
 		folderId: folder.value ? folder.value.id : null,
 		type: props.type,
 		untilId: files.value.at(-1)?.id,
diff --git a/packages/frontend/src/components/MkFeaturedPhotos.vue b/packages/frontend/src/components/MkFeaturedPhotos.vue
index 6d1bad743..8a23d7d4b 100644
--- a/packages/frontend/src/components/MkFeaturedPhotos.vue
+++ b/packages/frontend/src/components/MkFeaturedPhotos.vue
@@ -10,11 +10,11 @@ SPDX-License-Identifier: AGPL-3.0-only
 <script lang="ts" setup>
 import { ref } from 'vue';
 import * as Misskey from 'misskey-js';
-import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 
 const meta = ref<Misskey.entities.MetaResponse>();
 
-os.api('meta', { detail: true }).then(gotMeta => {
+misskeyApi('meta', { detail: true }).then(gotMeta => {
 	meta.value = gotMeta;
 });
 </script>
diff --git a/packages/frontend/src/components/MkFollowButton.vue b/packages/frontend/src/components/MkFollowButton.vue
index eb5c54de6..78c4fb3cd 100644
--- a/packages/frontend/src/components/MkFollowButton.vue
+++ b/packages/frontend/src/components/MkFollowButton.vue
@@ -38,11 +38,12 @@ SPDX-License-Identifier: AGPL-3.0-only
 import { onBeforeUnmount, onMounted, ref } from 'vue';
 import * as Misskey from 'misskey-js';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { useStream } from '@/stream.js';
 import { i18n } from '@/i18n.js';
 import { claimAchievement } from '@/scripts/achievements.js';
 import { $i } from '@/account.js';
-import { defaultStore } from "@/store.js";
+import { defaultStore } from '@/store.js';
 
 const props = withDefaults(defineProps<{
 	user: Misskey.entities.UserDetailed,
@@ -63,7 +64,7 @@ const wait = ref(false);
 const connection = useStream().useChannel('main');
 
 if (props.user.isFollowing == null) {
-	os.api('users/show', {
+	misskeyApi('users/show', {
 		userId: props.user.id,
 	})
 		.then(onFollowChange);
@@ -88,17 +89,17 @@ async function onClick() {
 
 			if (canceled) return;
 
-			await os.api('following/delete', {
+			await misskeyApi('following/delete', {
 				userId: props.user.id,
 			});
 		} else {
 			if (hasPendingFollowRequestFromYou.value) {
-				await os.api('following/requests/cancel', {
+				await misskeyApi('following/requests/cancel', {
 					userId: props.user.id,
 				});
 				hasPendingFollowRequestFromYou.value = false;
 			} else {
-				await os.api('following/create', {
+				await misskeyApi('following/create', {
 					userId: props.user.id,
 					withReplies: defaultStore.state.defaultWithReplies,
 				});
diff --git a/packages/frontend/src/components/MkHeatmap.vue b/packages/frontend/src/components/MkHeatmap.vue
index a57e6c929..f47b680f8 100644
--- a/packages/frontend/src/components/MkHeatmap.vue
+++ b/packages/frontend/src/components/MkHeatmap.vue
@@ -15,7 +15,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 <script lang="ts" setup>
 import { onMounted, nextTick, watch, shallowRef, ref } from 'vue';
 import { Chart } from 'chart.js';
-import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { defaultStore } from '@/store.js';
 import { useChartTooltip } from '@/scripts/use-chart-tooltip.js';
 import { alpha } from '@/scripts/color.js';
@@ -72,19 +72,19 @@ async function renderChart() {
 	let values;
 
 	if (props.src === 'active-users') {
-		const raw = await os.api('charts/active-users', { limit: chartLimit, span: 'day' });
+		const raw = await misskeyApi('charts/active-users', { limit: chartLimit, span: 'day' });
 		values = raw.readWrite;
 	} else if (props.src === 'notes') {
-		const raw = await os.api('charts/notes', { limit: chartLimit, span: 'day' });
+		const raw = await misskeyApi('charts/notes', { limit: chartLimit, span: 'day' });
 		values = raw.local.inc;
 	} else if (props.src === 'ap-requests-inbox-received') {
-		const raw = await os.api('charts/ap-request', { limit: chartLimit, span: 'day' });
+		const raw = await misskeyApi('charts/ap-request', { limit: chartLimit, span: 'day' });
 		values = raw.inboxReceived;
 	} else if (props.src === 'ap-requests-deliver-succeeded') {
-		const raw = await os.api('charts/ap-request', { limit: chartLimit, span: 'day' });
+		const raw = await misskeyApi('charts/ap-request', { limit: chartLimit, span: 'day' });
 		values = raw.deliverSucceeded;
 	} else if (props.src === 'ap-requests-deliver-failed') {
-		const raw = await os.api('charts/ap-request', { limit: chartLimit, span: 'day' });
+		const raw = await misskeyApi('charts/ap-request', { limit: chartLimit, span: 'day' });
 		values = raw.deliverFailed;
 	}
 
diff --git a/packages/frontend/src/components/MkInstanceCardMini.vue b/packages/frontend/src/components/MkInstanceCardMini.vue
index 8a63e0cce..ac9f67355 100644
--- a/packages/frontend/src/components/MkInstanceCardMini.vue
+++ b/packages/frontend/src/components/MkInstanceCardMini.vue
@@ -18,7 +18,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 import { ref } from 'vue';
 import * as Misskey from 'misskey-js';
 import MkMiniChart from '@/components/MkMiniChart.vue';
-import * as os from '@/os.js';
+import { misskeyApiGet } from '@/scripts/misskey-api.js';
 import { getProxiedImageUrlNullable } from '@/scripts/media-proxy.js';
 
 const props = defineProps<{
@@ -27,7 +27,7 @@ const props = defineProps<{
 
 const chartValues = ref<number[] | null>(null);
 
-os.apiGet('charts/instance', { host: props.instance.host, limit: 16 + 1, span: 'day' }).then(res => {
+misskeyApiGet('charts/instance', { host: props.instance.host, limit: 16 + 1, span: 'day' }).then(res => {
 	// 今日のぶんの値はまだ途中の値であり、それも含めると大抵の場合前日よりも下降しているようなグラフになってしまうため今日は弾く
 	res['requests.received'].splice(0, 1);
 	chartValues.value = res['requests.received'];
diff --git a/packages/frontend/src/components/MkInstanceStats.vue b/packages/frontend/src/components/MkInstanceStats.vue
index 7b763ad38..157608965 100644
--- a/packages/frontend/src/components/MkInstanceStats.vue
+++ b/packages/frontend/src/components/MkInstanceStats.vue
@@ -90,6 +90,7 @@ import MkSelect from '@/components/MkSelect.vue';
 import MkChart from '@/components/MkChart.vue';
 import { useChartTooltip } from '@/scripts/use-chart-tooltip.js';
 import * as os from '@/os.js';
+import { misskeyApiGet } from '@/scripts/misskey-api.js';
 import { i18n } from '@/i18n.js';
 import MkHeatmap from '@/components/MkHeatmap.vue';
 import MkFoldableSection from '@/components/MkFoldableSection.vue';
@@ -162,7 +163,7 @@ function createDoughnut(chartEl, tooltip, data) {
 }
 
 onMounted(() => {
-	os.apiGet('federation/stats', { limit: 30 }).then(fedStats => {
+	misskeyApiGet('federation/stats', { limit: 30 }).then(fedStats => {
 		createDoughnut(subDoughnutEl.value, externalTooltipHandler1, fedStats.topSubInstances.map(x => ({
 			name: x.host,
 			color: x.themeColor,
diff --git a/packages/frontend/src/components/MkNote.vue b/packages/frontend/src/components/MkNote.vue
index 7d4207f0f..3ec9c3c46 100644
--- a/packages/frontend/src/components/MkNote.vue
+++ b/packages/frontend/src/components/MkNote.vue
@@ -170,6 +170,7 @@ import { checkWordMute } from '@/scripts/check-word-mute.js';
 import { userPage } from '@/filters/user.js';
 import * as os from '@/os.js';
 import * as sound from '@/scripts/sound.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { defaultStore, noteViewInterruptors } from '@/store.js';
 import { reactionPicker } from '@/scripts/reaction-picker.js';
 import { extractUrlFromMfm } from '@/scripts/extract-url-from-mfm.js';
@@ -277,7 +278,7 @@ const keymap = {
 };
 
 provide('react', (reaction: string) => {
-	os.api('notes/reactions/create', {
+	misskeyApi('notes/reactions/create', {
 		noteId: appearNote.value.id,
 		reaction: reaction,
 	});
@@ -298,7 +299,7 @@ if (props.mock) {
 
 if (!props.mock) {
 	useTooltip(renoteButton, async (showing) => {
-		const renotes = await os.api('notes/renotes', {
+		const renotes = await misskeyApi('notes/renotes', {
 			noteId: appearNote.value.id,
 			limit: 11,
 		});
@@ -350,7 +351,7 @@ function react(viaKeyboard = false): void {
 			return;
 		}
 
-		os.api('notes/reactions/create', {
+		misskeyApi('notes/reactions/create', {
 			noteId: appearNote.value.id,
 			reaction: '❤️',
 		});
@@ -371,7 +372,7 @@ function react(viaKeyboard = false): void {
 				return;
 			}
 
-			os.api('notes/reactions/create', {
+			misskeyApi('notes/reactions/create', {
 				noteId: appearNote.value.id,
 				reaction: reaction,
 			});
@@ -393,7 +394,7 @@ function undoReact(note): void {
 		return;
 	}
 
-	os.api('notes/reactions/delete', {
+	misskeyApi('notes/reactions/delete', {
 		noteId: note.id,
 	});
 }
@@ -453,7 +454,7 @@ function showRenoteMenu(viaKeyboard = false): void {
 			icon: 'ti ti-trash',
 			danger: true,
 			action: () => {
-				os.api('notes/delete', {
+				misskeyApi('notes/delete', {
 					noteId: note.value.id,
 				});
 				isDeleted.value = true;
@@ -499,7 +500,7 @@ function focusAfter() {
 }
 
 function readPromo() {
-	os.api('promo/read', {
+	misskeyApi('promo/read', {
 		noteId: appearNote.value.id,
 	});
 	isDeleted.value = true;
diff --git a/packages/frontend/src/components/MkNoteDetailed.vue b/packages/frontend/src/components/MkNoteDetailed.vue
index 33a6786d0..6f0c0323c 100644
--- a/packages/frontend/src/components/MkNoteDetailed.vue
+++ b/packages/frontend/src/components/MkNoteDetailed.vue
@@ -210,6 +210,7 @@ import { checkWordMute } from '@/scripts/check-word-mute.js';
 import { userPage } from '@/filters/user.js';
 import { notePage } from '@/filters/note.js';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import * as sound from '@/scripts/sound.js';
 import { defaultStore, noteViewInterruptors } from '@/store.js';
 import { reactionPicker } from '@/scripts/reaction-picker.js';
@@ -292,7 +293,7 @@ const keymap = {
 };
 
 provide('react', (reaction: string) => {
-	os.api('notes/reactions/create', {
+	misskeyApi('notes/reactions/create', {
 		noteId: appearNote.value.id,
 		reaction: reaction,
 	});
@@ -326,7 +327,7 @@ useNoteCapture({
 });
 
 useTooltip(renoteButton, async (showing) => {
-	const renotes = await os.api('notes/renotes', {
+	const renotes = await misskeyApi('notes/renotes', {
 		noteId: appearNote.value.id,
 		limit: 11,
 	});
@@ -371,7 +372,7 @@ function react(viaKeyboard = false): void {
 	if (appearNote.value.reactionAcceptance === 'likeOnly') {
 		sound.play('reaction');
 
-		os.api('notes/reactions/create', {
+		misskeyApi('notes/reactions/create', {
 			noteId: appearNote.value.id,
 			reaction: '❤️',
 		});
@@ -387,7 +388,7 @@ function react(viaKeyboard = false): void {
 		reactionPicker.show(reactButton.value, reaction => {
 			sound.play('reaction');
 
-			os.api('notes/reactions/create', {
+			misskeyApi('notes/reactions/create', {
 				noteId: appearNote.value.id,
 				reaction: reaction,
 			});
@@ -403,7 +404,7 @@ function react(viaKeyboard = false): void {
 function undoReact(note): void {
 	const oldReaction = note.myReaction;
 	if (!oldReaction) return;
-	os.api('notes/reactions/delete', {
+	misskeyApi('notes/reactions/delete', {
 		noteId: note.id,
 	});
 }
@@ -446,7 +447,7 @@ function showRenoteMenu(viaKeyboard = false): void {
 		icon: 'ti ti-trash',
 		danger: true,
 		action: () => {
-			os.api('notes/delete', {
+			misskeyApi('notes/delete', {
 				noteId: note.value.id,
 			});
 			isDeleted.value = true;
@@ -468,7 +469,7 @@ const repliesLoaded = ref(false);
 
 function loadReplies() {
 	repliesLoaded.value = true;
-	os.api('notes/children', {
+	misskeyApi('notes/children', {
 		noteId: appearNote.value.id,
 		limit: 30,
 	}).then(res => {
@@ -480,7 +481,7 @@ const conversationLoaded = ref(false);
 
 function loadConversation() {
 	conversationLoaded.value = true;
-	os.api('notes/conversation', {
+	misskeyApi('notes/conversation', {
 		noteId: appearNote.value.replyId,
 	}).then(res => {
 		conversation.value = res.reverse();
diff --git a/packages/frontend/src/components/MkNoteSub.vue b/packages/frontend/src/components/MkNoteSub.vue
index 40362a955..c59d568dc 100644
--- a/packages/frontend/src/components/MkNoteSub.vue
+++ b/packages/frontend/src/components/MkNoteSub.vue
@@ -46,7 +46,7 @@ import MkNoteHeader from '@/components/MkNoteHeader.vue';
 import MkSubNoteContent from '@/components/MkSubNoteContent.vue';
 import MkCwButton from '@/components/MkCwButton.vue';
 import { notePage } from '@/filters/note.js';
-import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { i18n } from '@/i18n.js';
 import { $i } from '@/account.js';
 import { userPage } from '@/filters/user.js';
@@ -68,7 +68,7 @@ const showContent = ref(false);
 const replies = ref<Misskey.entities.Note[]>([]);
 
 if (props.detail) {
-	os.api('notes/children', {
+	misskeyApi('notes/children', {
 		noteId: props.note.id,
 		limit: 5,
 	}).then(res => {
diff --git a/packages/frontend/src/components/MkNotification.vue b/packages/frontend/src/components/MkNotification.vue
index da7eb36d9..ce8b054b3 100644
--- a/packages/frontend/src/components/MkNotification.vue
+++ b/packages/frontend/src/components/MkNotification.vue
@@ -145,7 +145,7 @@ import { getNoteSummary } from '@/scripts/get-note-summary.js';
 import { notePage } from '@/filters/note.js';
 import { userPage } from '@/filters/user.js';
 import { i18n } from '@/i18n.js';
-import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { $i } from '@/account.js';
 import { infoImageUrl } from '@/instance.js';
 
@@ -162,12 +162,12 @@ const followRequestDone = ref(false);
 
 const acceptFollowRequest = () => {
 	followRequestDone.value = true;
-	os.api('following/requests/accept', { userId: props.notification.user.id });
+	misskeyApi('following/requests/accept', { userId: props.notification.user.id });
 };
 
 const rejectFollowRequest = () => {
 	followRequestDone.value = true;
-	os.api('following/requests/reject', { userId: props.notification.user.id });
+	misskeyApi('following/requests/reject', { userId: props.notification.user.id });
 };
 </script>
 
diff --git a/packages/frontend/src/components/MkPagination.vue b/packages/frontend/src/components/MkPagination.vue
index bdd96238d..f5b238046 100644
--- a/packages/frontend/src/components/MkPagination.vue
+++ b/packages/frontend/src/components/MkPagination.vue
@@ -46,6 +46,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 import { computed, ComputedRef, isRef, nextTick, onActivated, onBeforeMount, onBeforeUnmount, onDeactivated, ref, shallowRef, watch } from 'vue';
 import * as Misskey from 'misskey-js';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { onScrollTop, isTopVisible, getBodyScrollHeight, getScrollContainer, onScrollBottom, scrollToBottom, scroll, isBottomVisible } from '@/scripts/scroll.js';
 import { useDocumentVisibility } from '@/scripts/use-document-visibility.js';
 import { defaultStore } from '@/store.js';
@@ -203,7 +204,7 @@ async function init(): Promise<void> {
 	queue.value = new Map();
 	fetching.value = true;
 	const params = props.pagination.params ? isRef(props.pagination.params) ? props.pagination.params.value : props.pagination.params : {};
-	await os.api(props.pagination.endpoint, {
+	await misskeyApi(props.pagination.endpoint, {
 		...params,
 		limit: props.pagination.limit ?? 10,
 		allowPartial: true,
@@ -239,7 +240,7 @@ const fetchMore = async (): Promise<void> => {
 	if (!more.value || fetching.value || moreFetching.value || items.value.size === 0) return;
 	moreFetching.value = true;
 	const params = props.pagination.params ? isRef(props.pagination.params) ? props.pagination.params.value : props.pagination.params : {};
-	await os.api(props.pagination.endpoint, {
+	await misskeyApi(props.pagination.endpoint, {
 		...params,
 		limit: SECOND_FETCH_LIMIT,
 		...(props.pagination.offsetMode ? {
@@ -303,7 +304,7 @@ const fetchMoreAhead = async (): Promise<void> => {
 	if (!more.value || fetching.value || moreFetching.value || items.value.size === 0) return;
 	moreFetching.value = true;
 	const params = props.pagination.params ? isRef(props.pagination.params) ? props.pagination.params.value : props.pagination.params : {};
-	await os.api(props.pagination.endpoint, {
+	await misskeyApi(props.pagination.endpoint, {
 		...params,
 		limit: SECOND_FETCH_LIMIT,
 		...(props.pagination.offsetMode ? {
diff --git a/packages/frontend/src/components/MkPoll.vue b/packages/frontend/src/components/MkPoll.vue
index 682f8e306..a318799ad 100644
--- a/packages/frontend/src/components/MkPoll.vue
+++ b/packages/frontend/src/components/MkPoll.vue
@@ -32,6 +32,7 @@ import * as Misskey from 'misskey-js';
 import { sum } from '@/scripts/array.js';
 import { pleaseLogin } from '@/scripts/please-login.js';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { i18n } from '@/i18n.js';
 import { useInterval } from '@/scripts/use-interval.js';
 
@@ -83,7 +84,7 @@ const vote = async (id) => {
 	});
 	if (canceled) return;
 
-	await os.api('notes/polls/vote', {
+	await misskeyApi('notes/polls/vote', {
 		noteId: props.note.id,
 		choice: id,
 	});
diff --git a/packages/frontend/src/components/MkPostForm.vue b/packages/frontend/src/components/MkPostForm.vue
index b86f50eac..8c6fba663 100644
--- a/packages/frontend/src/components/MkPostForm.vue
+++ b/packages/frontend/src/components/MkPostForm.vue
@@ -115,6 +115,7 @@ import { extractMentions } from '@/scripts/extract-mentions.js';
 import { formatTimeString } from '@/scripts/format-time-string.js';
 import { Autocomplete } from '@/scripts/autocomplete.js';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { selectFiles } from '@/scripts/select-file.js';
 import { defaultStore, notePostInterruptors, postFormActions } from '@/store.js';
 import MkInfo from '@/components/MkInfo.vue';
@@ -328,7 +329,7 @@ if (props.reply && ['home', 'followers', 'specified'].includes(props.reply.visib
 
 	if (visibility.value === 'specified') {
 		if (props.reply.visibleUserIds) {
-			os.api('users/show', {
+			misskeyApi('users/show', {
 				userIds: props.reply.visibleUserIds.filter(uid => uid !== $i.id && uid !== props.reply.userId),
 			}).then(users => {
 				users.forEach(pushVisibleUser);
@@ -336,7 +337,7 @@ if (props.reply && ['home', 'followers', 'specified'].includes(props.reply.visib
 		}
 
 		if (props.reply.userId !== $i.id) {
-			os.api('users/show', { userId: props.reply.userId }).then(user => {
+			misskeyApi('users/show', { userId: props.reply.userId }).then(user => {
 				pushVisibleUser(user);
 			});
 		}
@@ -383,7 +384,7 @@ function addMissingMention() {
 
 	for (const x of extractMentions(ast)) {
 		if (!visibleUsers.value.some(u => (u.username === x.username) && (u.host === x.host))) {
-			os.api('users/show', { username: x.username, host: x.host }).then(user => {
+			misskeyApi('users/show', { username: x.username, host: x.host }).then(user => {
 				visibleUsers.value.push(user);
 			});
 		}
@@ -784,7 +785,7 @@ async function post(ev?: MouseEvent) {
 	}
 
 	posting.value = true;
-	os.api('notes/create', postData, token).then(() => {
+	misskeyApi('notes/create', postData, token).then(() => {
 		if (props.freezeAfterPosted) {
 			posted.value = true;
 		} else {
diff --git a/packages/frontend/src/components/MkPostFormAttaches.vue b/packages/frontend/src/components/MkPostFormAttaches.vue
index 28a09c571..31dc48194 100644
--- a/packages/frontend/src/components/MkPostFormAttaches.vue
+++ b/packages/frontend/src/components/MkPostFormAttaches.vue
@@ -24,6 +24,7 @@ import { defineAsyncComponent, inject } from 'vue';
 import * as Misskey from 'misskey-js';
 import MkDriveFileThumbnail from '@/components/MkDriveFileThumbnail.vue';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { i18n } from '@/i18n.js';
 
 const Sortable = defineAsyncComponent(() => import('vuedraggable').then(x => x.default));
@@ -61,7 +62,7 @@ function toggleSensitive(file) {
 		return;
 	}
 
-	os.api('drive/files/update', {
+	misskeyApi('drive/files/update', {
 		fileId: file.id,
 		isSensitive: !file.isSensitive,
 	}).then(() => {
@@ -78,7 +79,7 @@ async function rename(file) {
 		allowEmpty: false,
 	});
 	if (canceled) return;
-	os.api('drive/files/update', {
+	misskeyApi('drive/files/update', {
 		fileId: file.id,
 		name: result,
 	}).then(() => {
@@ -96,7 +97,7 @@ async function describe(file) {
 	}, {
 		done: caption => {
 			let comment = caption.length === 0 ? null : caption;
-			os.api('drive/files/update', {
+			misskeyApi('drive/files/update', {
 				fileId: file.id,
 				comment: comment,
 			}).then(() => {
diff --git a/packages/frontend/src/components/MkPushNotificationAllowButton.vue b/packages/frontend/src/components/MkPushNotificationAllowButton.vue
index ebbd5e6cd..1b8263ae6 100644
--- a/packages/frontend/src/components/MkPushNotificationAllowButton.vue
+++ b/packages/frontend/src/components/MkPushNotificationAllowButton.vue
@@ -45,7 +45,8 @@ import { ref } from 'vue';
 import { $i, getAccounts } from '@/account.js';
 import MkButton from '@/components/MkButton.vue';
 import { instance } from '@/instance.js';
-import { api, apiWithDialog, promiseDialog } from '@/os.js';
+import { apiWithDialog, promiseDialog } from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { i18n } from '@/i18n.js';
 
 defineProps<{
@@ -82,7 +83,7 @@ function subscribe() {
 			pushSubscription.value = subscription;
 
 			// Register
-			pushRegistrationInServer.value = await api('sw/register', {
+			pushRegistrationInServer.value = await misskeyApi('sw/register', {
 				endpoint: subscription.endpoint,
 				auth: encode(subscription.getKey('auth')),
 				publickey: encode(subscription.getKey('p256dh')),
@@ -159,7 +160,7 @@ if (navigator.serviceWorker == null) {
 			supported.value = true;
 
 			if (pushSubscription.value) {
-				const res = await api('sw/show-registration', {
+				const res = await misskeyApi('sw/show-registration', {
 					endpoint: pushSubscription.value.endpoint,
 				});
 
diff --git a/packages/frontend/src/components/MkReactionsViewer.reaction.vue b/packages/frontend/src/components/MkReactionsViewer.reaction.vue
index 250b7b96d..2e75f444d 100644
--- a/packages/frontend/src/components/MkReactionsViewer.reaction.vue
+++ b/packages/frontend/src/components/MkReactionsViewer.reaction.vue
@@ -22,6 +22,7 @@ import * as Misskey from 'misskey-js';
 import XDetails from '@/components/MkReactionsViewer.details.vue';
 import MkReactionIcon from '@/components/MkReactionIcon.vue';
 import * as os from '@/os.js';
+import { misskeyApi, misskeyApiGet } from '@/scripts/misskey-api.js';
 import { useTooltip } from '@/scripts/use-tooltip.js';
 import { $i } from '@/account.js';
 import MkReactionEffect from '@/components/MkReactionEffect.vue';
@@ -69,11 +70,11 @@ async function toggleReaction() {
 			return;
 		}
 
-		os.api('notes/reactions/delete', {
+		misskeyApi('notes/reactions/delete', {
 			noteId: props.note.id,
 		}).then(() => {
 			if (oldReaction !== props.reaction) {
-				os.api('notes/reactions/create', {
+				misskeyApi('notes/reactions/create', {
 					noteId: props.note.id,
 					reaction: props.reaction,
 				});
@@ -87,7 +88,7 @@ async function toggleReaction() {
 			return;
 		}
 
-		os.api('notes/reactions/create', {
+		misskeyApi('notes/reactions/create', {
 			noteId: props.note.id,
 			reaction: props.reaction,
 		});
@@ -117,7 +118,7 @@ onMounted(() => {
 
 if (!mock) {
 	useTooltip(buttonEl, async (showing) => {
-		const reactions = await os.apiGet('notes/reactions', {
+		const reactions = await misskeyApiGet('notes/reactions', {
 			noteId: props.note.id,
 			type: props.reaction,
 			limit: 10,
diff --git a/packages/frontend/src/components/MkRetentionHeatmap.vue b/packages/frontend/src/components/MkRetentionHeatmap.vue
index e69aa1be8..ef497e0e8 100644
--- a/packages/frontend/src/components/MkRetentionHeatmap.vue
+++ b/packages/frontend/src/components/MkRetentionHeatmap.vue
@@ -15,7 +15,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 <script lang="ts" setup>
 import { onMounted, nextTick, shallowRef, ref } from 'vue';
 import { Chart } from 'chart.js';
-import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { defaultStore } from '@/store.js';
 import { useChartTooltip } from '@/scripts/use-chart-tooltip.js';
 import { alpha } from '@/scripts/color.js';
@@ -43,7 +43,7 @@ async function renderChart() {
 
 	const maxDays = wide ? 10 : narrow ? 5 : 7;
 
-	let raw = await os.api('retention', { });
+	let raw = await misskeyApi('retention', { });
 
 	raw = raw.slice(0, maxDays + 1);
 
diff --git a/packages/frontend/src/components/MkRetentionLineChart.vue b/packages/frontend/src/components/MkRetentionLineChart.vue
index e2682ec06..eb05878ae 100644
--- a/packages/frontend/src/components/MkRetentionLineChart.vue
+++ b/packages/frontend/src/components/MkRetentionLineChart.vue
@@ -16,7 +16,7 @@ import { useChartTooltip } from '@/scripts/use-chart-tooltip.js';
 import { chartVLine } from '@/scripts/chart-vline.js';
 import { alpha } from '@/scripts/color.js';
 import { initChart } from '@/scripts/init-chart.js';
-import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 
 initChart();
 
@@ -40,7 +40,7 @@ const getDate = (ymd: string) => {
 };
 
 onMounted(async () => {
-	let raw = await os.api('retention', { });
+	let raw = await misskeyApi('retention', { });
 
 	const vLineColor = defaultStore.state.darkMode ? 'rgba(255, 255, 255, 0.2)' : 'rgba(0, 0, 0, 0.2)';
 
diff --git a/packages/frontend/src/components/MkSignin.vue b/packages/frontend/src/components/MkSignin.vue
index 2fc2c9ec5..1c06cff9a 100644
--- a/packages/frontend/src/components/MkSignin.vue
+++ b/packages/frontend/src/components/MkSignin.vue
@@ -59,6 +59,7 @@ import MkInput from '@/components/MkInput.vue';
 import MkInfo from '@/components/MkInfo.vue';
 import { host as configHost } from '@/config.js';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { login } from '@/account.js';
 import { i18n } from '@/i18n.js';
 
@@ -95,7 +96,7 @@ const props = defineProps({
 });
 
 function onUsernameChange(): void {
-	os.api('users/show', {
+	misskeyApi('users/show', {
 		username: username.value,
 	}).then(userResponse => {
 		user.value = userResponse;
@@ -120,7 +121,7 @@ async function queryKey(): Promise<void> {
 			credentialRequest.value = null;
 			queryingKey.value = false;
 			signing.value = true;
-			return os.api('signin', {
+			return misskeyApi('signin', {
 				username: username.value,
 				password: password.value,
 				credential: credential.toJSON(),
@@ -142,7 +143,7 @@ function onSubmit(): void {
 	signing.value = true;
 	if (!totpLogin.value && user.value && user.value.twoFactorEnabled) {
 		if (webAuthnSupported() && user.value.securityKeys) {
-			os.api('signin', {
+			misskeyApi('signin', {
 				username: username.value,
 				password: password.value,
 			}).then(res => {
@@ -159,7 +160,7 @@ function onSubmit(): void {
 			signing.value = false;
 		}
 	} else {
-		os.api('signin', {
+		misskeyApi('signin', {
 			username: username.value,
 			password: password.value,
 			token: user.value?.twoFactorEnabled ? token.value : undefined,
diff --git a/packages/frontend/src/components/MkSignupDialog.form.vue b/packages/frontend/src/components/MkSignupDialog.form.vue
index 44cfb6f0f..c71330d62 100644
--- a/packages/frontend/src/components/MkSignupDialog.form.vue
+++ b/packages/frontend/src/components/MkSignupDialog.form.vue
@@ -84,6 +84,7 @@ import MkInput from './MkInput.vue';
 import MkCaptcha, { type Captcha } from '@/components/MkCaptcha.vue';
 import * as config from '@/config.js';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { login } from '@/account.js';
 import { instance } from '@/instance.js';
 import { i18n } from '@/i18n.js';
@@ -180,7 +181,7 @@ function onChangeUsername(): void {
 	usernameState.value = 'wait';
 	usernameAbortController.value = new AbortController();
 
-	os.api('username/available', {
+	misskeyApi('username/available', {
 		username: username.value,
 	}, undefined, usernameAbortController.value.signal).then(result => {
 		usernameState.value = result.available ? 'ok' : 'unavailable';
@@ -203,7 +204,7 @@ function onChangeEmail(): void {
 	emailState.value = 'wait';
 	emailAbortController.value = new AbortController();
 
-	os.api('email-address/available', {
+	misskeyApi('email-address/available', {
 		emailAddress: email.value,
 	}, undefined, emailAbortController.value.signal).then(result => {
 		emailState.value = result.available ? 'ok' :
@@ -245,7 +246,7 @@ async function onSubmit(): Promise<void> {
 	submitting.value = true;
 
 	try {
-		await os.api('signup', {
+		await misskeyApi('signup', {
 			username: username.value,
 			password: password.value,
 			emailAddress: email.value,
@@ -262,7 +263,7 @@ async function onSubmit(): Promise<void> {
 			});
 			emit('signupEmailPending');
 		} else {
-			const res = await os.api('signin', {
+			const res = await misskeyApi('signin', {
 				username: username.value,
 				password: password.value,
 			});
diff --git a/packages/frontend/src/components/MkUserAnnouncementEditDialog.vue b/packages/frontend/src/components/MkUserAnnouncementEditDialog.vue
index b5489d8e5..af094a8e8 100644
--- a/packages/frontend/src/components/MkUserAnnouncementEditDialog.vue
+++ b/packages/frontend/src/components/MkUserAnnouncementEditDialog.vue
@@ -56,6 +56,7 @@ import MkModalWindow from '@/components/MkModalWindow.vue';
 import MkButton from '@/components/MkButton.vue';
 import MkInput from '@/components/MkInput.vue';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { i18n } from '@/i18n.js';
 import MkTextarea from '@/components/MkTextarea.vue';
 import MkSwitch from '@/components/MkSwitch.vue';
@@ -121,7 +122,7 @@ async function del() {
 	});
 	if (canceled) return;
 
-	os.api('admin/announcements/delete', {
+	misskeyApi('admin/announcements/delete', {
 		id: props.announcement.id,
 	}).then(() => {
 		emit('done', {
diff --git a/packages/frontend/src/components/MkUserCardMini.vue b/packages/frontend/src/components/MkUserCardMini.vue
index 75288aac0..9ec5c7b5c 100644
--- a/packages/frontend/src/components/MkUserCardMini.vue
+++ b/packages/frontend/src/components/MkUserCardMini.vue
@@ -18,7 +18,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 import * as Misskey from 'misskey-js';
 import { onMounted, ref } from 'vue';
 import MkMiniChart from '@/components/MkMiniChart.vue';
-import * as os from '@/os.js';
+import { misskeyApiGet } from '@/scripts/misskey-api.js';
 import { acct } from '@/filters/user.js';
 
 const props = withDefaults(defineProps<{
@@ -32,7 +32,7 @@ const chartValues = ref<number[] | null>(null);
 
 onMounted(() => {
 	if (props.withChart) {
-		os.apiGet('charts/user/notes', { userId: props.user.id, limit: 16 + 1, span: 'day' }).then(res => {
+		misskeyApiGet('charts/user/notes', { userId: props.user.id, limit: 16 + 1, span: 'day' }).then(res => {
 			// 今日のぶんの値はまだ途中の値であり、それも含めると大抵の場合前日よりも下降しているようなグラフになってしまうため今日は弾く
 			res.inc.splice(0, 1);
 			chartValues.value = res.inc;
diff --git a/packages/frontend/src/components/MkUserPopup.vue b/packages/frontend/src/components/MkUserPopup.vue
index df8252fb1..04244ac30 100644
--- a/packages/frontend/src/components/MkUserPopup.vue
+++ b/packages/frontend/src/components/MkUserPopup.vue
@@ -60,6 +60,7 @@ import * as Misskey from 'misskey-js';
 import MkFollowButton from '@/components/MkFollowButton.vue';
 import { userPage } from '@/filters/user.js';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { getUserMenu } from '@/scripts/get-user-menu.js';
 import number from '@/filters/number.js';
 import { i18n } from '@/i18n.js';
@@ -97,7 +98,7 @@ onMounted(() => {
 			Misskey.acct.parse(props.q.substring(1)) :
 			{ userId: props.q };
 
-		os.api('users/show', query).then(res => {
+		misskeyApi('users/show', query).then(res => {
 			if (!props.showing) return;
 			user.value = res;
 		});
diff --git a/packages/frontend/src/components/MkUserSelectDialog.vue b/packages/frontend/src/components/MkUserSelectDialog.vue
index 9d41147bd..f4aa06950 100644
--- a/packages/frontend/src/components/MkUserSelectDialog.vue
+++ b/packages/frontend/src/components/MkUserSelectDialog.vue
@@ -62,7 +62,7 @@ import * as Misskey from 'misskey-js';
 import MkInput from '@/components/MkInput.vue';
 import FormSplit from '@/components/form/split.vue';
 import MkModalWindow from '@/components/MkModalWindow.vue';
-import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { defaultStore } from '@/store.js';
 import { i18n } from '@/i18n.js';
 import { $i } from '@/account.js';
@@ -90,7 +90,7 @@ const search = () => {
 		users.value = [];
 		return;
 	}
-	os.api('users/search-by-username-and-host', {
+	misskeyApi('users/search-by-username-and-host', {
 		username: username.value,
 		host: host.value,
 		limit: 10,
@@ -118,7 +118,7 @@ const cancel = () => {
 };
 
 onMounted(() => {
-	os.api('users/show', {
+	misskeyApi('users/show', {
 		userIds: defaultStore.state.recentlyUsedUsers,
 	}).then(users => {
 		if (props.includeSelf && users.find(x => $i ? x.id === $i.id : true) == null) {
diff --git a/packages/frontend/src/components/MkUserSetupDialog.Privacy.vue b/packages/frontend/src/components/MkUserSetupDialog.Privacy.vue
index ecdfbb496..c933a1462 100644
--- a/packages/frontend/src/components/MkUserSetupDialog.Privacy.vue
+++ b/packages/frontend/src/components/MkUserSetupDialog.Privacy.vue
@@ -49,7 +49,7 @@ import { i18n } from '@/i18n.js';
 import MkSwitch from '@/components/MkSwitch.vue';
 import MkInfo from '@/components/MkInfo.vue';
 import MkFolder from '@/components/MkFolder.vue';
-import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 
 const isLocked = ref(false);
 const hideOnlineStatus = ref(false);
@@ -57,7 +57,7 @@ const noCrawle = ref(false);
 const preventAiLearning = ref(true);
 
 watch([isLocked, hideOnlineStatus, noCrawle, preventAiLearning], () => {
-	os.api('i/update', {
+	misskeyApi('i/update', {
 		isLocked: !!isLocked.value,
 		hideOnlineStatus: !!hideOnlineStatus.value,
 		noCrawle: !!noCrawle.value,
diff --git a/packages/frontend/src/components/MkUserSetupDialog.User.vue b/packages/frontend/src/components/MkUserSetupDialog.User.vue
index 49476c736..fe9b8930a 100644
--- a/packages/frontend/src/components/MkUserSetupDialog.User.vue
+++ b/packages/frontend/src/components/MkUserSetupDialog.User.vue
@@ -29,7 +29,7 @@ import * as Misskey from 'misskey-js';
 import { ref } from 'vue';
 import MkButton from '@/components/MkButton.vue';
 import { i18n } from '@/i18n.js';
-import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 
 const props = defineProps<{
 	user: Misskey.entities.UserDetailed;
@@ -39,7 +39,7 @@ const isFollowing = ref(false);
 
 async function follow() {
 	isFollowing.value = true;
-	os.api('following/create', {
+	misskeyApi('following/create', {
 		userId: props.user.id,
 	});
 }
diff --git a/packages/frontend/src/components/MkVisitorDashboard.ActiveUsersChart.vue b/packages/frontend/src/components/MkVisitorDashboard.ActiveUsersChart.vue
index 746ed3e0d..e45d594f1 100644
--- a/packages/frontend/src/components/MkVisitorDashboard.ActiveUsersChart.vue
+++ b/packages/frontend/src/components/MkVisitorDashboard.ActiveUsersChart.vue
@@ -17,7 +17,7 @@ import { onMounted, shallowRef, ref } from 'vue';
 import { Chart } from 'chart.js';
 import gradient from 'chartjs-plugin-gradient';
 import tinycolor from 'tinycolor2';
-import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { defaultStore } from '@/store.js';
 import { useChartTooltip } from '@/scripts/use-chart-tooltip.js';
 import { chartVLine } from '@/scripts/chart-vline.js';
@@ -53,7 +53,7 @@ async function renderChart() {
 		}));
 	};
 
-	const raw = await os.api('charts/active-users', { limit: chartLimit, span: 'day' });
+	const raw = await misskeyApi('charts/active-users', { limit: chartLimit, span: 'day' });
 
 	const vLineColor = defaultStore.state.darkMode ? 'rgba(255, 255, 255, 0.2)' : 'rgba(0, 0, 0, 0.2)';
 
diff --git a/packages/frontend/src/components/MkVisitorDashboard.vue b/packages/frontend/src/components/MkVisitorDashboard.vue
index 9ed08ee37..ac3d6cabd 100644
--- a/packages/frontend/src/components/MkVisitorDashboard.vue
+++ b/packages/frontend/src/components/MkVisitorDashboard.vue
@@ -60,6 +60,7 @@ import MkTimeline from '@/components/MkTimeline.vue';
 import MkInfo from '@/components/MkInfo.vue';
 import { instanceName } from '@/config.js';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { i18n } from '@/i18n.js';
 import { instance } from '@/instance.js';
 import MkNumber from '@/components/MkNumber.vue';
@@ -68,11 +69,11 @@ import XActiveUsersChart from '@/components/MkVisitorDashboard.ActiveUsersChart.
 const meta = ref<Misskey.entities.MetaResponse | null>(null);
 const stats = ref<Misskey.entities.StatsResponse | null>(null);
 
-os.api('meta', { detail: true }).then(_meta => {
+misskeyApi('meta', { detail: true }).then(_meta => {
 	meta.value = _meta;
 });
 
-os.api('stats', {}).then((res) => {
+misskeyApi('stats', {}).then((res) => {
 	stats.value = res;
 });
 
diff --git a/packages/frontend/src/components/page/page.note.vue b/packages/frontend/src/components/page/page.note.vue
index d885ebb1d..83fdf24de 100644
--- a/packages/frontend/src/components/page/page.note.vue
+++ b/packages/frontend/src/components/page/page.note.vue
@@ -16,7 +16,7 @@ import * as Misskey from 'misskey-js';
 import { NoteBlock } from './block.type.js';
 import MkNote from '@/components/MkNote.vue';
 import MkNoteDetailed from '@/components/MkNoteDetailed.vue';
-import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 
 const props = defineProps<{
 	block: NoteBlock,
@@ -26,7 +26,7 @@ const props = defineProps<{
 const note = ref<Misskey.entities.Note | null>(null);
 
 onMounted(() => {
-	os.api('notes/show', { noteId: props.block.note })
+	misskeyApi('notes/show', { noteId: props.block.note })
 		.then(result => {
 			note.value = result;
 		});
diff --git a/packages/frontend/src/custom-emojis.ts b/packages/frontend/src/custom-emojis.ts
index 6a48159f1..e4ce9cb9c 100644
--- a/packages/frontend/src/custom-emojis.ts
+++ b/packages/frontend/src/custom-emojis.ts
@@ -5,7 +5,7 @@
 
 import { shallowRef, computed, markRaw, watch } from 'vue';
 import * as Misskey from 'misskey-js';
-import { api, apiGet } from '@/os.js';
+import { misskeyApi, misskeyApiGet } from '@/scripts/misskey-api.js';
 import { useStream } from '@/stream.js';
 import { get, set } from '@/scripts/idb-proxy.js';
 
@@ -52,11 +52,11 @@ export async function fetchCustomEmojis(force = false) {
 
 	let res;
 	if (force) {
-		res = await api('emojis', {});
+		res = await misskeyApi('emojis', {});
 	} else {
 		const lastFetchedAt = await get('lastEmojisFetchedAt');
 		if (lastFetchedAt && (now - lastFetchedAt) < 1000 * 60 * 60) return;
-		res = await apiGet('emojis', {});
+		res = await misskeyApiGet('emojis', {});
 	}
 
 	customEmojis.value = res.emojis;
diff --git a/packages/frontend/src/instance.ts b/packages/frontend/src/instance.ts
index b09264dab..739e90101 100644
--- a/packages/frontend/src/instance.ts
+++ b/packages/frontend/src/instance.ts
@@ -5,7 +5,7 @@
 
 import { computed, reactive } from 'vue';
 import * as Misskey from 'misskey-js';
-import { api } from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { miLocalStorage } from '@/local-storage.js';
 import { DEFAULT_INFO_IMAGE_URL, DEFAULT_NOT_FOUND_IMAGE_URL, DEFAULT_SERVER_ERROR_IMAGE_URL } from '@/const.js';
 
@@ -26,7 +26,7 @@ export const infoImageUrl = computed(() => instance.infoImageUrl ?? DEFAULT_INFO
 export const notFoundImageUrl = computed(() => instance.notFoundImageUrl ?? DEFAULT_NOT_FOUND_IMAGE_URL);
 
 export async function fetchInstance() {
-	const meta = await api('meta', {
+	const meta = await misskeyApi('meta', {
 		detail: false,
 	});
 
diff --git a/packages/frontend/src/os.ts b/packages/frontend/src/os.ts
index b02f6aa64..a63d61bb8 100644
--- a/packages/frontend/src/os.ts
+++ b/packages/frontend/src/os.ts
@@ -5,12 +5,11 @@
 
 // TODO: なんでもかんでもos.tsに突っ込むのやめたいのでよしなに分割する
 
-import { pendingApiRequestsCount, api, apiGet } from '@/scripts/api.js';
-export { pendingApiRequestsCount, api, apiGet };
 import { Component, markRaw, Ref, ref, defineAsyncComponent } from 'vue';
 import { EventEmitter } from 'eventemitter3';
 import insertTextAtCursor from 'insert-text-at-cursor';
 import * as Misskey from 'misskey-js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { i18n } from '@/i18n.js';
 import MkPostFormDialog from '@/components/MkPostFormDialog.vue';
 import MkWaitingDialog from '@/components/MkWaitingDialog.vue';
@@ -33,7 +32,7 @@ export const apiWithDialog = ((
 	data: Record<string, any> = {},
 	token?: string | null | undefined,
 ) => {
-	const promise = api(endpoint, data, token);
+	const promise = misskeyApi(endpoint, data, token);
 	promiseDialog(promise, null, async (err) => {
 		let title = null;
 		let text = err.message + '\n' + (err as any).id;
@@ -83,7 +82,7 @@ export const apiWithDialog = ((
 	});
 
 	return promise;
-}) as typeof api;
+}) as typeof misskeyApi;
 
 export function promiseDialog<T extends Promise<any>>(
 	promise: T,
@@ -621,7 +620,7 @@ export function checkExistence(fileData: ArrayBuffer): Promise<any> {
 		const data = new FormData();
 		data.append('md5', getMD5(fileData));
 
-		os.api('drive/files/find-by-hash', {
+		api('drive/files/find-by-hash', {
 			md5: getMD5(fileData)
 		}).then(resp => {
 			resolve(resp.length > 0 ? resp[0] : null);
diff --git a/packages/frontend/src/pages/_error_.vue b/packages/frontend/src/pages/_error_.vue
index 72a12e3c7..10e8ccda0 100644
--- a/packages/frontend/src/pages/_error_.vue
+++ b/packages/frontend/src/pages/_error_.vue
@@ -29,7 +29,7 @@ import { ref, computed } from 'vue';
 import * as Misskey from 'misskey-js';
 import MkButton from '@/components/MkButton.vue';
 import { version } from '@/config.js';
-import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { unisonReload } from '@/scripts/unison-reload.js';
 import { i18n } from '@/i18n.js';
 import { definePageMetadata } from '@/scripts/page-metadata.js';
@@ -46,7 +46,7 @@ const loaded = ref(false);
 const serverIsDead = ref(false);
 const meta = ref<Misskey.entities.MetaResponse | null>(null);
 
-os.api('meta', {
+misskeyApi('meta', {
 	detail: false,
 }).then(res => {
 	loaded.value = true;
diff --git a/packages/frontend/src/pages/about.vue b/packages/frontend/src/pages/about.vue
index 44095348f..f402b26ad 100644
--- a/packages/frontend/src/pages/about.vue
+++ b/packages/frontend/src/pages/about.vue
@@ -114,7 +114,7 @@ import FormSplit from '@/components/form/split.vue';
 import MkFolder from '@/components/MkFolder.vue';
 import MkKeyValue from '@/components/MkKeyValue.vue';
 import MkInstanceStats from '@/components/MkInstanceStats.vue';
-import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import number from '@/filters/number.js';
 import { i18n } from '@/i18n.js';
 import { definePageMetadata } from '@/scripts/page-metadata.js';
@@ -136,7 +136,7 @@ watch(tab, () => {
 	}
 });
 
-const initStats = () => os.api('stats', {
+const initStats = () => misskeyApi('stats', {
 }).then((res) => {
 	stats.value = res;
 });
diff --git a/packages/frontend/src/pages/admin-file.vue b/packages/frontend/src/pages/admin-file.vue
index 56b5e7d92..4a9c659a9 100644
--- a/packages/frontend/src/pages/admin-file.vue
+++ b/packages/frontend/src/pages/admin-file.vue
@@ -79,6 +79,7 @@ import MkUserCardMini from '@/components/MkUserCardMini.vue';
 import MkInfo from '@/components/MkInfo.vue';
 import bytes from '@/filters/bytes.js';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { i18n } from '@/i18n.js';
 import { definePageMetadata } from '@/scripts/page-metadata.js';
 import { iAmAdmin, iAmModerator } from '@/account.js';
@@ -93,8 +94,8 @@ const props = defineProps<{
 }>();
 
 async function fetch() {
-	file.value = await os.api('drive/files/show', { fileId: props.fileId });
-	info.value = await os.api('admin/drive/show-file', { fileId: props.fileId });
+	file.value = await misskeyApi('drive/files/show', { fileId: props.fileId });
+	info.value = await misskeyApi('admin/drive/show-file', { fileId: props.fileId });
 	isSensitive.value = file.value.isSensitive;
 }
 
@@ -113,7 +114,7 @@ async function del() {
 }
 
 async function toggleIsSensitive(v) {
-	await os.api('drive/files/update', { fileId: props.fileId, isSensitive: v });
+	await misskeyApi('drive/files/update', { fileId: props.fileId, isSensitive: v });
 	isSensitive.value = v;
 }
 
diff --git a/packages/frontend/src/pages/admin-user.vue b/packages/frontend/src/pages/admin-user.vue
index ce820e10e..85417f0ec 100644
--- a/packages/frontend/src/pages/admin-user.vue
+++ b/packages/frontend/src/pages/admin-user.vue
@@ -219,6 +219,7 @@ import FormSuspense from '@/components/form/suspense.vue';
 import MkFileListForAdmin from '@/components/MkFileListForAdmin.vue';
 import MkInfo from '@/components/MkInfo.vue';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { url } from '@/config.js';
 import { acct } from '@/filters/user.js';
 import { definePageMetadata } from '@/scripts/page-metadata.js';
@@ -262,11 +263,11 @@ const announcementsPagination = {
 const expandedRoles = ref([]);
 
 function createFetcher() {
-	return () => Promise.all([os.api('users/show', {
+	return () => Promise.all([misskeyApi('users/show', {
 		userId: props.userId,
-	}), os.api('admin/show-user', {
+	}), misskeyApi('admin/show-user', {
 		userId: props.userId,
-	}), iAmAdmin ? os.api('admin/get-user-ips', {
+	}), iAmAdmin ? misskeyApi('admin/get-user-ips', {
 		userId: props.userId,
 	}) : Promise.resolve(null)]).then(([_user, _info, _ips]) => {
 		user.value = _user;
@@ -278,7 +279,7 @@ function createFetcher() {
 		moderationNote.value = info.value.moderationNote;
 
 		watch(moderationNote, async () => {
-			await os.api('admin/update-user-note', { userId: user.value.id, text: moderationNote.value });
+			await misskeyApi('admin/update-user-note', { userId: user.value.id, text: moderationNote.value });
 			await refreshUser();
 		});
 	});
@@ -301,7 +302,7 @@ async function resetPassword() {
 	if (confirm.canceled) {
 		return;
 	} else {
-		const { password } = await os.api('admin/reset-password', {
+		const { password } = await misskeyApi('admin/reset-password', {
 			userId: user.value.id,
 		});
 		os.alert({
@@ -319,7 +320,7 @@ async function toggleSuspend(v) {
 	if (confirm.canceled) {
 		suspended.value = !v;
 	} else {
-		await os.api(v ? 'admin/suspend-user' : 'admin/unsuspend-user', { userId: user.value.id });
+		await misskeyApi(v ? 'admin/suspend-user' : 'admin/unsuspend-user', { userId: user.value.id });
 		await refreshUser();
 	}
 }
@@ -331,7 +332,7 @@ async function unsetUserAvatar() {
 	});
 	if (confirm.canceled) return;
 	const process = async () => {
-		await os.api('admin/unset-user-avatar', { userId: user.value.id });
+		await misskeyApi('admin/unset-user-avatar', { userId: user.value.id });
 		os.success();
 	};
 	await process().catch(err => {
@@ -350,7 +351,7 @@ async function unsetUserBanner() {
 	});
 	if (confirm.canceled) return;
 	const process = async () => {
-		await os.api('admin/unset-user-banner', { userId: user.value.id });
+		await misskeyApi('admin/unset-user-banner', { userId: user.value.id });
 		os.success();
 	};
 	await process().catch(err => {
@@ -369,7 +370,7 @@ async function deleteAllFiles() {
 	});
 	if (confirm.canceled) return;
 	const process = async () => {
-		await os.api('admin/delete-all-files-of-a-user', { userId: user.value.id });
+		await misskeyApi('admin/delete-all-files-of-a-user', { userId: user.value.id });
 		os.success();
 	};
 	await process().catch(err => {
@@ -406,7 +407,7 @@ async function deleteAccount() {
 }
 
 async function assignRole() {
-	const roles = await os.api('admin/roles/list');
+	const roles = await misskeyApi('admin/roles/list');
 
 	const { canceled, result: roleId } = await os.select({
 		title: i18n.ts._role.chooseRoleToAssign,
@@ -482,7 +483,7 @@ watch(() => props.userId, () => {
 });
 
 watch(user, () => {
-	os.api('ap/get', {
+	misskeyApi('ap/get', {
 		uri: user.value.uri ?? `${url}/users/${user.value.id}`,
 	}).then(res => {
 		ap.value = res;
diff --git a/packages/frontend/src/pages/admin/ads.vue b/packages/frontend/src/pages/admin/ads.vue
index 5884ac74b..eb9aef0e4 100644
--- a/packages/frontend/src/pages/admin/ads.vue
+++ b/packages/frontend/src/pages/admin/ads.vue
@@ -96,6 +96,7 @@ import MkFolder from '@/components/MkFolder.vue';
 import MkSelect from '@/components/MkSelect.vue';
 import FormSplit from '@/components/form/split.vue';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { i18n } from '@/i18n.js';
 import { definePageMetadata } from '@/scripts/page-metadata.js';
 
@@ -108,7 +109,7 @@ const daysOfWeek: string[] = [i18n.ts._weekday.sunday, i18n.ts._weekday.monday,
 const filterType = ref('all');
 let publishing: boolean | null = null;
 
-os.api('admin/ad/list', { publishing: publishing }).then(adsResponse => {
+misskeyApi('admin/ad/list', { publishing: publishing }).then(adsResponse => {
 	if (adsResponse != null) {
 		ads.value = adsResponse.map(r => {
 			const exdate = new Date(r.expiresAt);
@@ -174,7 +175,7 @@ function remove(ad) {
 
 function save(ad) {
 	if (ad.id == null) {
-		os.api('admin/ad/create', {
+		misskeyApi('admin/ad/create', {
 			...ad,
 			expiresAt: new Date(ad.expiresAt).getTime(),
 			startsAt: new Date(ad.startsAt).getTime(),
@@ -191,7 +192,7 @@ function save(ad) {
 			});
 		});
 	} else {
-		os.api('admin/ad/update', {
+		misskeyApi('admin/ad/update', {
 			...ad,
 			expiresAt: new Date(ad.expiresAt).getTime(),
 			startsAt: new Date(ad.startsAt).getTime(),
@@ -210,7 +211,7 @@ function save(ad) {
 }
 
 function more() {
-	os.api('admin/ad/list', { untilId: ads.value.reduce((acc, ad) => ad.id != null ? ad : acc).id, publishing: publishing }).then(adsResponse => {
+	misskeyApi('admin/ad/list', { untilId: ads.value.reduce((acc, ad) => ad.id != null ? ad : acc).id, publishing: publishing }).then(adsResponse => {
 		if (adsResponse == null) return;
 		ads.value = ads.value.concat(adsResponse.map(r => {
 			const exdate = new Date(r.expiresAt);
@@ -227,7 +228,7 @@ function more() {
 }
 
 function refresh() {
-	os.api('admin/ad/list', { publishing: publishing }).then(adsResponse => {
+	misskeyApi('admin/ad/list', { publishing: publishing }).then(adsResponse => {
 		if (adsResponse == null) return;
 		ads.value = adsResponse.map(r => {
 			const exdate = new Date(r.expiresAt);
diff --git a/packages/frontend/src/pages/admin/announcements.vue b/packages/frontend/src/pages/admin/announcements.vue
index e4bbe1595..f941d512b 100644
--- a/packages/frontend/src/pages/admin/announcements.vue
+++ b/packages/frontend/src/pages/admin/announcements.vue
@@ -79,6 +79,7 @@ import MkSwitch from '@/components/MkSwitch.vue';
 import MkRadios from '@/components/MkRadios.vue';
 import MkInfo from '@/components/MkInfo.vue';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { i18n } from '@/i18n.js';
 import { definePageMetadata } from '@/scripts/page-metadata.js';
 import MkFolder from '@/components/MkFolder.vue';
@@ -86,7 +87,7 @@ import MkTextarea from '@/components/MkTextarea.vue';
 
 const announcements = ref<any[]>([]);
 
-os.api('admin/announcements/list').then(announcementResponse => {
+misskeyApi('admin/announcements/list').then(announcementResponse => {
 	announcements.value = announcementResponse;
 });
 
@@ -112,7 +113,7 @@ function del(announcement) {
 	}).then(({ canceled }) => {
 		if (canceled) return;
 		announcements.value = announcements.value.filter(x => x !== announcement);
-		os.api('admin/announcements/delete', announcement);
+		misskeyApi('admin/announcements/delete', announcement);
 	});
 }
 
@@ -134,13 +135,13 @@ async function save(announcement) {
 }
 
 function more() {
-	os.api('admin/announcements/list', { untilId: announcements.value.reduce((acc, announcement) => announcement.id != null ? announcement : acc).id }).then(announcementResponse => {
+	misskeyApi('admin/announcements/list', { untilId: announcements.value.reduce((acc, announcement) => announcement.id != null ? announcement : acc).id }).then(announcementResponse => {
 		announcements.value = announcements.value.concat(announcementResponse);
 	});
 }
 
 function refresh() {
-	os.api('admin/announcements/list').then(announcementResponse => {
+	misskeyApi('admin/announcements/list').then(announcementResponse => {
 		announcements.value = announcementResponse;
 	});
 }
diff --git a/packages/frontend/src/pages/admin/bot-protection.vue b/packages/frontend/src/pages/admin/bot-protection.vue
index 8c9d670d1..99b8070b7 100644
--- a/packages/frontend/src/pages/admin/bot-protection.vue
+++ b/packages/frontend/src/pages/admin/bot-protection.vue
@@ -72,6 +72,7 @@ import MkButton from '@/components/MkButton.vue';
 import FormSuspense from '@/components/form/suspense.vue';
 import FormSlot from '@/components/form/slot.vue';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { fetchInstance } from '@/instance.js';
 import { i18n } from '@/i18n.js';
 
@@ -86,7 +87,7 @@ const turnstileSiteKey = ref<string | null>(null);
 const turnstileSecretKey = ref<string | null>(null);
 
 async function init() {
-	const meta = await os.api('admin/meta');
+	const meta = await misskeyApi('admin/meta');
 	hcaptchaSiteKey.value = meta.hcaptchaSiteKey;
 	hcaptchaSecretKey.value = meta.hcaptchaSecretKey;
 	recaptchaSiteKey.value = meta.recaptchaSiteKey;
diff --git a/packages/frontend/src/pages/admin/branding.vue b/packages/frontend/src/pages/admin/branding.vue
index 38cce6973..72b47949e 100644
--- a/packages/frontend/src/pages/admin/branding.vue
+++ b/packages/frontend/src/pages/admin/branding.vue
@@ -101,6 +101,7 @@ import MkInput from '@/components/MkInput.vue';
 import MkTextarea from '@/components/MkTextarea.vue';
 import FormSuspense from '@/components/form/suspense.vue';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { instance, fetchInstance } from '@/instance.js';
 import { i18n } from '@/i18n.js';
 import { definePageMetadata } from '@/scripts/page-metadata.js';
@@ -122,7 +123,7 @@ const notFoundImageUrl = ref<string | null>(null);
 const manifestJsonOverride = ref<string>('{}');
 
 async function init() {
-	const meta = await os.api('admin/meta');
+	const meta = await misskeyApi('admin/meta');
 	iconUrl.value = meta.iconUrl;
 	app192IconUrl.value = meta.app192IconUrl;
 	app512IconUrl.value = meta.app512IconUrl;
diff --git a/packages/frontend/src/pages/admin/database.vue b/packages/frontend/src/pages/admin/database.vue
index 53f556bb6..27541f576 100644
--- a/packages/frontend/src/pages/admin/database.vue
+++ b/packages/frontend/src/pages/admin/database.vue
@@ -21,13 +21,13 @@ SPDX-License-Identifier: AGPL-3.0-only
 import { computed } from 'vue';
 import FormSuspense from '@/components/form/suspense.vue';
 import MkKeyValue from '@/components/MkKeyValue.vue';
-import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import bytes from '@/filters/bytes.js';
 import number from '@/filters/number.js';
 import { i18n } from '@/i18n.js';
 import { definePageMetadata } from '@/scripts/page-metadata.js';
 
-const databasePromiseFactory = () => os.api('admin/get-table-stats').then(res => Object.entries(res).sort((a, b) => b[1].size - a[1].size));
+const databasePromiseFactory = () => misskeyApi('admin/get-table-stats').then(res => Object.entries(res).sort((a, b) => b[1].size - a[1].size));
 
 const headerActions = computed(() => []);
 
diff --git a/packages/frontend/src/pages/admin/email-settings.vue b/packages/frontend/src/pages/admin/email-settings.vue
index 2e6ad3b1d..c6fd02d67 100644
--- a/packages/frontend/src/pages/admin/email-settings.vue
+++ b/packages/frontend/src/pages/admin/email-settings.vue
@@ -73,6 +73,7 @@ import FormSuspense from '@/components/form/suspense.vue';
 import FormSplit from '@/components/form/split.vue';
 import FormSection from '@/components/form/section.vue';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { fetchInstance, instance } from '@/instance.js';
 import { i18n } from '@/i18n.js';
 import { definePageMetadata } from '@/scripts/page-metadata.js';
@@ -87,7 +88,7 @@ const smtpUser = ref<string>('');
 const smtpPass = ref<string>('');
 
 async function init() {
-	const meta = await os.api('admin/meta');
+	const meta = await misskeyApi('admin/meta');
 	enableEmail.value = meta.enableEmail;
 	email.value = meta.email;
 	smtpSecure.value = meta.smtpSecure;
diff --git a/packages/frontend/src/pages/admin/external-services.vue b/packages/frontend/src/pages/admin/external-services.vue
index 22dc115fd..4468c8279 100644
--- a/packages/frontend/src/pages/admin/external-services.vue
+++ b/packages/frontend/src/pages/admin/external-services.vue
@@ -42,6 +42,7 @@ import MkSwitch from '@/components/MkSwitch.vue';
 import FormSuspense from '@/components/form/suspense.vue';
 import FormSection from '@/components/form/section.vue';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { fetchInstance } from '@/instance.js';
 import { i18n } from '@/i18n.js';
 import { definePageMetadata } from '@/scripts/page-metadata.js';
@@ -50,7 +51,7 @@ const deeplAuthKey = ref<string>('');
 const deeplIsPro = ref<boolean>(false);
 
 async function init() {
-	const meta = await os.api('admin/meta');
+	const meta = await misskeyApi('admin/meta');
 	deeplAuthKey.value = meta.deeplAuthKey;
 	deeplIsPro.value = meta.deeplIsPro;
 }
diff --git a/packages/frontend/src/pages/admin/files.vue b/packages/frontend/src/pages/admin/files.vue
index a366b302c..a614cacd4 100644
--- a/packages/frontend/src/pages/admin/files.vue
+++ b/packages/frontend/src/pages/admin/files.vue
@@ -42,6 +42,7 @@ import MkInput from '@/components/MkInput.vue';
 import MkSelect from '@/components/MkSelect.vue';
 import MkFileListForAdmin from '@/components/MkFileListForAdmin.vue';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { i18n } from '@/i18n.js';
 import { definePageMetadata } from '@/scripts/page-metadata.js';
 
@@ -83,7 +84,7 @@ async function find() {
 	});
 	if (canceled) return;
 
-	os.api('admin/drive/show-file', q.startsWith('http://') || q.startsWith('https://') ? { url: q.trim() } : { fileId: q.trim() }).then(file => {
+	misskeyApi('admin/drive/show-file', q.startsWith('http://') || q.startsWith('https://') ? { url: q.trim() } : { fileId: q.trim() }).then(file => {
 		show(file);
 	}).catch(err => {
 		if (err.code === 'NO_SUCH_FILE') {
diff --git a/packages/frontend/src/pages/admin/index.vue b/packages/frontend/src/pages/admin/index.vue
index 5e92cbd60..333bac724 100644
--- a/packages/frontend/src/pages/admin/index.vue
+++ b/packages/frontend/src/pages/admin/index.vue
@@ -34,6 +34,7 @@ import MkSuperMenu from '@/components/MkSuperMenu.vue';
 import MkInfo from '@/components/MkInfo.vue';
 import { instance } from '@/instance.js';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { lookupUser, lookupUserByEmail } from '@/scripts/lookup-user.js';
 import { useRouter } from '@/router.js';
 import { PageMetadata, definePageMetadata, provideMetadataReceiver } from '@/scripts/page-metadata.js';
@@ -62,7 +63,7 @@ let noEmailServer = !instance.enableEmail;
 const thereIsUnresolvedAbuseReport = ref(false);
 const currentPage = computed(() => router.currentRef.value.child);
 
-os.api('admin/abuse-user-reports', {
+misskeyApi('admin/abuse-user-reports', {
 	state: 'unresolved',
 	limit: 1,
 }).then(reports => {
@@ -266,7 +267,7 @@ provideMetadataReceiver((info) => {
 });
 
 function invite() {
-	os.api('admin/invite/create').then(x => {
+	misskeyApi('admin/invite/create').then(x => {
 		os.alert({
 			type: 'info',
 			text: x[0].code,
diff --git a/packages/frontend/src/pages/admin/instance-block.vue b/packages/frontend/src/pages/admin/instance-block.vue
index 356eca2af..58e147f11 100644
--- a/packages/frontend/src/pages/admin/instance-block.vue
+++ b/packages/frontend/src/pages/admin/instance-block.vue
@@ -29,6 +29,7 @@ import MkButton from '@/components/MkButton.vue';
 import MkTextarea from '@/components/MkTextarea.vue';
 import FormSuspense from '@/components/form/suspense.vue';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { fetchInstance } from '@/instance.js';
 import { i18n } from '@/i18n.js';
 import { definePageMetadata } from '@/scripts/page-metadata.js';
@@ -38,7 +39,7 @@ const silencedHosts = ref<string>('');
 const tab = ref('block');
 
 async function init() {
-	const meta = await os.api('admin/meta');
+	const meta = await misskeyApi('admin/meta');
 	blockedHosts.value = meta.blockedHosts.join('\n');
 	silencedHosts.value = meta.silencedHosts.join('\n');
 }
diff --git a/packages/frontend/src/pages/admin/invites.vue b/packages/frontend/src/pages/admin/invites.vue
index 838ef52b1..8b06ec59b 100644
--- a/packages/frontend/src/pages/admin/invites.vue
+++ b/packages/frontend/src/pages/admin/invites.vue
@@ -59,6 +59,7 @@ import { computed, ref, shallowRef } from 'vue';
 import XHeader from './_header_.vue';
 import { i18n } from '@/i18n.js';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import MkButton from '@/components/MkButton.vue';
 import MkFolder from '@/components/MkFolder.vue';
 import MkSelect from '@/components/MkSelect.vue';
@@ -93,14 +94,14 @@ async function createWithOptions() {
 		count: createCount.value,
 	};
 
-	const tickets = await os.api('admin/invite/create', options);
+	const tickets = await misskeyApi('admin/invite/create', options);
 	os.alert({
 		type: 'success',
 		title: i18n.ts.inviteCodeCreated,
-		text: tickets?.map(x => x.code).join('\n'),
+		text: tickets.map(x => x.code).join('\n'),
 	});
 
-	tickets?.forEach(ticket => pagingComponent.value?.prepend(ticket));
+	tickets.forEach(ticket => pagingComponent.value?.prepend(ticket));
 }
 
 function deleted(id: string) {
diff --git a/packages/frontend/src/pages/admin/moderation.vue b/packages/frontend/src/pages/admin/moderation.vue
index f6c0b2940..4915bee71 100644
--- a/packages/frontend/src/pages/admin/moderation.vue
+++ b/packages/frontend/src/pages/admin/moderation.vue
@@ -66,6 +66,7 @@ import MkInput from '@/components/MkInput.vue';
 import MkTextarea from '@/components/MkTextarea.vue';
 import FormSuspense from '@/components/form/suspense.vue';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { fetchInstance } from '@/instance.js';
 import { i18n } from '@/i18n.js';
 import { definePageMetadata } from '@/scripts/page-metadata.js';
@@ -81,7 +82,7 @@ const tosUrl = ref<string | null>(null);
 const privacyPolicyUrl = ref<string | null>(null);
 
 async function init() {
-	const meta = await os.api('admin/meta');
+	const meta = await misskeyApi('admin/meta');
 	enableRegistration.value = !meta.disableRegistration;
 	emailRequiredForSignup.value = meta.emailRequiredForSignup;
 	sensitiveWords.value = meta.sensitiveWords.join('\n');
diff --git a/packages/frontend/src/pages/admin/object-storage.vue b/packages/frontend/src/pages/admin/object-storage.vue
index 7019971e9..03b29f187 100644
--- a/packages/frontend/src/pages/admin/object-storage.vue
+++ b/packages/frontend/src/pages/admin/object-storage.vue
@@ -90,6 +90,7 @@ import MkInput from '@/components/MkInput.vue';
 import FormSuspense from '@/components/form/suspense.vue';
 import FormSplit from '@/components/form/split.vue';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { fetchInstance } from '@/instance.js';
 import { i18n } from '@/i18n.js';
 import { definePageMetadata } from '@/scripts/page-metadata.js';
@@ -110,7 +111,7 @@ const objectStorageSetPublicRead = ref<boolean>(false);
 const objectStorageS3ForcePathStyle = ref<boolean>(true);
 
 async function init() {
-	const meta = await os.api('admin/meta');
+	const meta = await misskeyApi('admin/meta');
 	useObjectStorage.value = meta.useObjectStorage;
 	objectStorageBaseUrl.value = meta.objectStorageBaseUrl;
 	objectStorageBucket.value = meta.objectStorageBucket;
diff --git a/packages/frontend/src/pages/admin/other-settings.vue b/packages/frontend/src/pages/admin/other-settings.vue
index 5bb328ac9..bb0199eb4 100644
--- a/packages/frontend/src/pages/admin/other-settings.vue
+++ b/packages/frontend/src/pages/admin/other-settings.vue
@@ -47,6 +47,7 @@ import { ref, computed } from 'vue';
 import XHeader from './_header_.vue';
 import FormSuspense from '@/components/form/suspense.vue';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { fetchInstance } from '@/instance.js';
 import { i18n } from '@/i18n.js';
 import { definePageMetadata } from '@/scripts/page-metadata.js';
@@ -58,7 +59,7 @@ const enableChartsForRemoteUser = ref<boolean>(false);
 const enableChartsForFederatedInstances = ref<boolean>(false);
 
 async function init() {
-	const meta = await os.api('admin/meta');
+	const meta = await misskeyApi('admin/meta');
 	enableServerMachineStats.value = meta.enableServerMachineStats;
 	enableIdenticonGeneration.value = meta.enableIdenticonGeneration;
 	enableChartsForRemoteUser.value = meta.enableChartsForRemoteUser;
diff --git a/packages/frontend/src/pages/admin/overview.active-users.vue b/packages/frontend/src/pages/admin/overview.active-users.vue
index 5e67370c2..8acc5786b 100644
--- a/packages/frontend/src/pages/admin/overview.active-users.vue
+++ b/packages/frontend/src/pages/admin/overview.active-users.vue
@@ -16,7 +16,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 import { onMounted, shallowRef, ref } from 'vue';
 import { Chart } from 'chart.js';
 import gradient from 'chartjs-plugin-gradient';
-import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { defaultStore } from '@/store.js';
 import { useChartTooltip } from '@/scripts/use-chart-tooltip.js';
 import { chartVLine } from '@/scripts/chart-vline.js';
@@ -52,7 +52,7 @@ async function renderChart() {
 		}));
 	};
 
-	const raw = await os.api('charts/active-users', { limit: chartLimit, span: 'day' });
+	const raw = await misskeyApi('charts/active-users', { limit: chartLimit, span: 'day' });
 
 	const vLineColor = defaultStore.state.darkMode ? 'rgba(255, 255, 255, 0.2)' : 'rgba(0, 0, 0, 0.2)';
 
diff --git a/packages/frontend/src/pages/admin/overview.ap-requests.vue b/packages/frontend/src/pages/admin/overview.ap-requests.vue
index 0de62fade..694be9a59 100644
--- a/packages/frontend/src/pages/admin/overview.ap-requests.vue
+++ b/packages/frontend/src/pages/admin/overview.ap-requests.vue
@@ -23,7 +23,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 import { onMounted, shallowRef, ref } from 'vue';
 import { Chart } from 'chart.js';
 import gradient from 'chartjs-plugin-gradient';
-import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { useChartTooltip } from '@/scripts/use-chart-tooltip.js';
 import { chartVLine } from '@/scripts/chart-vline.js';
 import { defaultStore } from '@/store.js';
@@ -65,7 +65,7 @@ onMounted(async () => {
 		}));
 	};
 
-	const raw = await os.api('charts/ap-request', { limit: chartLimit, span: 'day' });
+	const raw = await misskeyApi('charts/ap-request', { limit: chartLimit, span: 'day' });
 
 	const vLineColor = defaultStore.state.darkMode ? 'rgba(255, 255, 255, 0.2)' : 'rgba(0, 0, 0, 0.2)';
 	const succColor = '#87e000';
diff --git a/packages/frontend/src/pages/admin/overview.federation.vue b/packages/frontend/src/pages/admin/overview.federation.vue
index cfd1c6a56..d3503bd46 100644
--- a/packages/frontend/src/pages/admin/overview.federation.vue
+++ b/packages/frontend/src/pages/admin/overview.federation.vue
@@ -49,6 +49,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 import { onMounted, ref } from 'vue';
 import XPie, { type InstanceForPie } from './overview.pie.vue';
 import * as os from '@/os.js';
+import { misskeyApiGet } from '@/scripts/misskey-api.js';
 import number from '@/filters/number.js';
 import MkNumberDiff from '@/components/MkNumberDiff.vue';
 import { i18n } from '@/i18n.js';
@@ -65,13 +66,13 @@ const fetching = ref(true);
 const { handler: externalTooltipHandler } = useChartTooltip();
 
 onMounted(async () => {
-	const chart = await os.apiGet('charts/federation', { limit: 2, span: 'day' });
+	const chart = await misskeyApiGet('charts/federation', { limit: 2, span: 'day' });
 	federationPubActive.value = chart.pubActive[0];
 	federationPubActiveDiff.value = chart.pubActive[0] - chart.pubActive[1];
 	federationSubActive.value = chart.subActive[0];
 	federationSubActiveDiff.value = chart.subActive[0] - chart.subActive[1];
 
-	os.apiGet('federation/stats', { limit: 10 }).then(res => {
+	misskeyApiGet('federation/stats', { limit: 10 }).then(res => {
 		topSubInstancesForPie.value = [
 			...res.topSubInstances.map(x => ({
 				name: x.host,
diff --git a/packages/frontend/src/pages/admin/overview.instances.vue b/packages/frontend/src/pages/admin/overview.instances.vue
index de34f0c09..8d731cbc9 100644
--- a/packages/frontend/src/pages/admin/overview.instances.vue
+++ b/packages/frontend/src/pages/admin/overview.instances.vue
@@ -18,8 +18,8 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 <script lang="ts" setup>
 import { ref } from 'vue';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import * as Misskey from 'misskey-js';
-import * as os from '@/os.js';
 import { useInterval } from '@/scripts/use-interval.js';
 import MkInstanceCardMini from '@/components/MkInstanceCardMini.vue';
 import { defaultStore } from '@/store.js';
@@ -28,7 +28,7 @@ const instances = ref<Misskey.entities.FederationInstance[]>([]);
 const fetching = ref(true);
 
 const fetch = async () => {
-	const fetchedInstances = await os.api('federation/instances', {
+	const fetchedInstances = await misskeyApi('federation/instances', {
 		sort: '+latestRequestReceivedAt',
 		limit: 6,
 	});
diff --git a/packages/frontend/src/pages/admin/overview.moderators.vue b/packages/frontend/src/pages/admin/overview.moderators.vue
index 3034bdd57..75b731996 100644
--- a/packages/frontend/src/pages/admin/overview.moderators.vue
+++ b/packages/frontend/src/pages/admin/overview.moderators.vue
@@ -18,15 +18,15 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 <script lang="ts" setup>
 import { onMounted, ref } from 'vue';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import * as Misskey from 'misskey-js';
-import * as os from '@/os.js';
 import { defaultStore } from '@/store.js';
 
 const moderators = ref<Misskey.entities.UserDetailed[] | null>(null);
 const fetching = ref(true);
 
 onMounted(async () => {
-	moderators.value = await os.api('admin/show-users', {
+	moderators.value = await misskeyApi('admin/show-users', {
 		sort: '+lastActiveDate',
 		state: 'adminOrModerator',
 		limit: 30,
diff --git a/packages/frontend/src/pages/admin/overview.stats.vue b/packages/frontend/src/pages/admin/overview.stats.vue
index 78f435e73..3fb24747c 100644
--- a/packages/frontend/src/pages/admin/overview.stats.vue
+++ b/packages/frontend/src/pages/admin/overview.stats.vue
@@ -63,7 +63,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 <script lang="ts" setup>
 import { onMounted, ref } from 'vue';
 import * as Misskey from 'misskey-js';
-import * as os from '@/os.js';
+import { misskeyApi, misskeyApiGet } from '@/scripts/misskey-api.js';
 import MkNumberDiff from '@/components/MkNumberDiff.vue';
 import MkNumber from '@/components/MkNumber.vue';
 import { i18n } from '@/i18n.js';
@@ -78,17 +78,17 @@ const fetching = ref(true);
 
 onMounted(async () => {
 	const [_stats, _onlineUsersCount] = await Promise.all([
-		os.api('stats', {}),
-		os.apiGet('get-online-users-count').then(res => res.count),
+		misskeyApi('stats', {}),
+		misskeyApiGet('get-online-users-count').then(res => res.count),
 	]);
 	stats.value = _stats;
 	onlineUsersCount.value = _onlineUsersCount;
 
-	os.apiGet('charts/users', { limit: 2, span: 'day' }).then(chart => {
+	misskeyApiGet('charts/users', { limit: 2, span: 'day' }).then(chart => {
 		usersComparedToThePrevDay.value = stats.value.originalUsersCount - chart.local.total[1];
 	});
 
-	os.apiGet('charts/notes', { limit: 2, span: 'day' }).then(chart => {
+	misskeyApiGet('charts/notes', { limit: 2, span: 'day' }).then(chart => {
 		notesComparedToThePrevDay.value = stats.value.originalNotesCount - chart.local.total[1];
 	});
 
diff --git a/packages/frontend/src/pages/admin/overview.users.vue b/packages/frontend/src/pages/admin/overview.users.vue
index 79579367c..530ca0933 100644
--- a/packages/frontend/src/pages/admin/overview.users.vue
+++ b/packages/frontend/src/pages/admin/overview.users.vue
@@ -18,8 +18,8 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 <script lang="ts" setup>
 import { ref } from 'vue';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import * as Misskey from 'misskey-js';
-import * as os from '@/os.js';
 import { useInterval } from '@/scripts/use-interval.js';
 import MkUserCardMini from '@/components/MkUserCardMini.vue';
 import { defaultStore } from '@/store.js';
@@ -28,7 +28,7 @@ const newUsers = ref<Misskey.entities.UserDetailed[] | null>(null);
 const fetching = ref(true);
 
 const fetch = async () => {
-	const _newUsers = await os.api('admin/show-users', {
+	const _newUsers = await misskeyApi('admin/show-users', {
 		limit: 5,
 		sort: '+createdAt',
 		origin: 'local',
diff --git a/packages/frontend/src/pages/admin/overview.vue b/packages/frontend/src/pages/admin/overview.vue
index 2e0791e24..df058f695 100644
--- a/packages/frontend/src/pages/admin/overview.vue
+++ b/packages/frontend/src/pages/admin/overview.vue
@@ -79,6 +79,7 @@ import XModerators from './overview.moderators.vue';
 import XHeatmap from './overview.heatmap.vue';
 import type { InstanceForPie } from './overview.pie.vue';
 import * as os from '@/os.js';
+import { misskeyApi, misskeyApiGet } from '@/scripts/misskey-api.js';
 import { useStream } from '@/stream.js';
 import { i18n } from '@/i18n.js';
 import { definePageMetadata } from '@/scripts/page-metadata.js';
@@ -117,14 +118,14 @@ onMounted(async () => {
 	magicGrid.listen();
 	*/
 
-	os.apiGet('charts/federation', { limit: 2, span: 'day' }).then(chart => {
+	misskeyApiGet('charts/federation', { limit: 2, span: 'day' }).then(chart => {
 		federationPubActive.value = chart.pubActive[0];
 		federationPubActiveDiff.value = chart.pubActive[0] - chart.pubActive[1];
 		federationSubActive.value = chart.subActive[0];
 		federationSubActiveDiff.value = chart.subActive[0] - chart.subActive[1];
 	});
 
-	os.apiGet('federation/stats', { limit: 10 }).then(res => {
+	misskeyApiGet('federation/stats', { limit: 10 }).then(res => {
 		topSubInstancesForPie.value = [
 			...res.topSubInstances.map(x => ({
 				name: x.host,
@@ -149,18 +150,18 @@ onMounted(async () => {
 		];
 	});
 
-	os.api('admin/server-info').then(serverInfoResponse => {
+	misskeyApi('admin/server-info').then(serverInfoResponse => {
 		serverInfo.value = serverInfoResponse;
 	});
 
-	os.api('admin/show-users', {
+	misskeyApi('admin/show-users', {
 		limit: 5,
 		sort: '+createdAt',
 	}).then(res => {
 		newUsers.value = res;
 	});
 
-	os.api('federation/instances', {
+	misskeyApi('federation/instances', {
 		sort: '+latestRequestReceivedAt',
 		limit: 25,
 	}).then(res => {
diff --git a/packages/frontend/src/pages/admin/proxy-account.vue b/packages/frontend/src/pages/admin/proxy-account.vue
index 05e48f7ac..8b1b3280f 100644
--- a/packages/frontend/src/pages/admin/proxy-account.vue
+++ b/packages/frontend/src/pages/admin/proxy-account.vue
@@ -28,6 +28,7 @@ import MkButton from '@/components/MkButton.vue';
 import MkInfo from '@/components/MkInfo.vue';
 import FormSuspense from '@/components/form/suspense.vue';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { fetchInstance } from '@/instance.js';
 import { i18n } from '@/i18n.js';
 import { definePageMetadata } from '@/scripts/page-metadata.js';
@@ -36,10 +37,10 @@ const proxyAccount = ref<Misskey.entities.UserDetailed | null>(null);
 const proxyAccountId = ref<string | null>(null);
 
 async function init() {
-	const meta = await os.api('admin/meta');
+	const meta = await misskeyApi('admin/meta');
 	proxyAccountId.value = meta.proxyAccountId;
 	if (proxyAccountId.value) {
-		proxyAccount.value = await os.api('users/show', { userId: proxyAccountId.value });
+		proxyAccount.value = await misskeyApi('users/show', { userId: proxyAccountId.value });
 	}
 }
 
diff --git a/packages/frontend/src/pages/admin/queue.chart.vue b/packages/frontend/src/pages/admin/queue.chart.vue
index 72276c1ee..085e5dbb7 100644
--- a/packages/frontend/src/pages/admin/queue.chart.vue
+++ b/packages/frontend/src/pages/admin/queue.chart.vue
@@ -51,7 +51,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 import { markRaw, onMounted, onUnmounted, ref, shallowRef } from 'vue';
 import XChart from './queue.chart.chart.vue';
 import number from '@/filters/number.js';
-import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { useStream } from '@/stream.js';
 import { i18n } from '@/i18n.js';
 import MkFolder from '@/components/MkFolder.vue';
@@ -105,7 +105,7 @@ const onStatsLog = (statsLog) => {
 
 onMounted(() => {
 	if (props.domain === 'inbox' || props.domain === 'deliver') {
-		os.api(`admin/queue/${props.domain}-delayed`).then(result => {
+		misskeyApi(`admin/queue/${props.domain}-delayed`).then(result => {
 			jobs.value = result;
 		});
 	}
diff --git a/packages/frontend/src/pages/admin/relays.vue b/packages/frontend/src/pages/admin/relays.vue
index 0056f2bd9..6811a8eba 100644
--- a/packages/frontend/src/pages/admin/relays.vue
+++ b/packages/frontend/src/pages/admin/relays.vue
@@ -29,6 +29,7 @@ import * as Misskey from 'misskey-js';
 import XHeader from './_header_.vue';
 import MkButton from '@/components/MkButton.vue';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { i18n } from '@/i18n.js';
 import { definePageMetadata } from '@/scripts/page-metadata.js';
 
@@ -41,7 +42,7 @@ async function addRelay() {
 		placeholder: i18n.ts.inboxUrl,
 	});
 	if (canceled) return;
-	os.api('admin/relays/add', {
+	misskeyApi('admin/relays/add', {
 		inbox,
 	}).then((relay: any) => {
 		refresh();
@@ -54,7 +55,7 @@ async function addRelay() {
 }
 
 function remove(inbox: string) {
-	os.api('admin/relays/remove', {
+	misskeyApi('admin/relays/remove', {
 		inbox,
 	}).then(() => {
 		refresh();
@@ -67,7 +68,7 @@ function remove(inbox: string) {
 }
 
 function refresh() {
-	os.api('admin/relays/list').then(relayList => {
+	misskeyApi('admin/relays/list').then(relayList => {
 		relays.value = relayList;
 	});
 }
diff --git a/packages/frontend/src/pages/admin/roles.edit.vue b/packages/frontend/src/pages/admin/roles.edit.vue
index 585b50aad..db0acae24 100644
--- a/packages/frontend/src/pages/admin/roles.edit.vue
+++ b/packages/frontend/src/pages/admin/roles.edit.vue
@@ -28,6 +28,7 @@ import { v4 as uuid } from 'uuid';
 import XHeader from './_header_.vue';
 import XEditor from './roles.editor.vue';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { i18n } from '@/i18n.js';
 import { definePageMetadata } from '@/scripts/page-metadata.js';
 import { useRouter } from '@/router.js';
@@ -44,7 +45,7 @@ const role = ref<Misskey.entities.Role | null>(null);
 const data = ref<any>(null);
 
 if (props.id) {
-	role.value = await os.api('admin/roles/show', {
+	role.value = await misskeyApi('admin/roles/show', {
 		roleId: props.id,
 	});
 
diff --git a/packages/frontend/src/pages/admin/roles.role.vue b/packages/frontend/src/pages/admin/roles.role.vue
index 9aa7d8dd3..d5ce190ef 100644
--- a/packages/frontend/src/pages/admin/roles.role.vue
+++ b/packages/frontend/src/pages/admin/roles.role.vue
@@ -67,6 +67,7 @@ import XHeader from './_header_.vue';
 import XEditor from './roles.editor.vue';
 import MkFolder from '@/components/MkFolder.vue';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { i18n } from '@/i18n.js';
 import { definePageMetadata } from '@/scripts/page-metadata.js';
 import { useRouter } from '@/router.js';
@@ -92,7 +93,7 @@ const usersPagination = {
 
 const expandedItems = ref([]);
 
-const role = reactive(await os.api('admin/roles/show', {
+const role = reactive(await misskeyApi('admin/roles/show', {
 	roleId: props.id,
 }));
 
diff --git a/packages/frontend/src/pages/admin/roles.vue b/packages/frontend/src/pages/admin/roles.vue
index 3962e0421..f7c4048b2 100644
--- a/packages/frontend/src/pages/admin/roles.vue
+++ b/packages/frontend/src/pages/admin/roles.vue
@@ -233,6 +233,7 @@ import MkButton from '@/components/MkButton.vue';
 import MkRange from '@/components/MkRange.vue';
 import MkRolePreview from '@/components/MkRolePreview.vue';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { i18n } from '@/i18n.js';
 import { definePageMetadata } from '@/scripts/page-metadata.js';
 import { instance } from '@/instance.js';
@@ -243,7 +244,7 @@ import { ROLE_POLICIES } from '@/const.js';
 const router = useRouter();
 const baseRoleQ = ref('');
 
-const roles = await os.api('admin/roles/list');
+const roles = await misskeyApi('admin/roles/list');
 
 const policies = reactive<Record<typeof ROLE_POLICIES[number], any>>({});
 for (const ROLE_POLICY of ROLE_POLICIES) {
diff --git a/packages/frontend/src/pages/admin/security.vue b/packages/frontend/src/pages/admin/security.vue
index 8d79dea20..ec0c6166d 100644
--- a/packages/frontend/src/pages/admin/security.vue
+++ b/packages/frontend/src/pages/admin/security.vue
@@ -148,6 +148,7 @@ import MkInput from '@/components/MkInput.vue';
 import MkButton from '@/components/MkButton.vue';
 import MkTextarea from '@/components/MkTextarea.vue';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { fetchInstance } from '@/instance.js';
 import { i18n } from '@/i18n.js';
 import { definePageMetadata } from '@/scripts/page-metadata.js';
@@ -170,7 +171,7 @@ const truemailAuthKey = ref<string | null>(null);
 const bannedEmailDomains = ref<string>('');
 
 async function init() {
-	const meta = await os.api('admin/meta');
+	const meta = await misskeyApi('admin/meta');
 	summalyProxy.value = meta.summalyProxy;
 	enableHcaptcha.value = meta.enableHcaptcha;
 	enableRecaptcha.value = meta.enableRecaptcha;
diff --git a/packages/frontend/src/pages/admin/settings.vue b/packages/frontend/src/pages/admin/settings.vue
index 224028edf..45375764b 100644
--- a/packages/frontend/src/pages/admin/settings.vue
+++ b/packages/frontend/src/pages/admin/settings.vue
@@ -158,6 +158,7 @@ import FormSection from '@/components/form/section.vue';
 import FormSplit from '@/components/form/split.vue';
 import FormSuspense from '@/components/form/suspense.vue';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { fetchInstance } from '@/instance.js';
 import { i18n } from '@/i18n.js';
 import { definePageMetadata } from '@/scripts/page-metadata.js';
@@ -184,7 +185,7 @@ const perUserListTimelineCacheMax = ref<number>(0);
 const notesPerOneAd = ref<number>(0);
 
 async function init(): Promise<void> {
-	const meta = await os.api('admin/meta');
+	const meta = await misskeyApi('admin/meta');
 	name.value = meta.name;
 	shortName.value = meta.shortName;
 	description.value = meta.description;
diff --git a/packages/frontend/src/pages/announcements.vue b/packages/frontend/src/pages/announcements.vue
index 8eca40370..5632bf7ca 100644
--- a/packages/frontend/src/pages/announcements.vue
+++ b/packages/frontend/src/pages/announcements.vue
@@ -45,6 +45,7 @@ import MkPagination from '@/components/MkPagination.vue';
 import MkButton from '@/components/MkButton.vue';
 import MkInfo from '@/components/MkInfo.vue';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { i18n } from '@/i18n.js';
 import { definePageMetadata } from '@/scripts/page-metadata.js';
 import { $i, updateAccount } from '@/account.js';
@@ -84,7 +85,7 @@ async function read(announcement) {
 		a.isRead = true;
 		return a;
 	});
-	os.api('i/read-announcement', { announcementId: announcement.id });
+	misskeyApi('i/read-announcement', { announcementId: announcement.id });
 	updateAccount({
 		unreadAnnouncements: $i!.unreadAnnouncements.filter(a => a.id !== announcement.id),
 	});
diff --git a/packages/frontend/src/pages/antenna-timeline.vue b/packages/frontend/src/pages/antenna-timeline.vue
index cba54790c..d96ca4208 100644
--- a/packages/frontend/src/pages/antenna-timeline.vue
+++ b/packages/frontend/src/pages/antenna-timeline.vue
@@ -29,6 +29,7 @@ import * as Misskey from 'misskey-js';
 import MkTimeline from '@/components/MkTimeline.vue';
 import { scroll } from '@/scripts/scroll.js';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { useRouter } from '@/router.js';
 import { definePageMetadata } from '@/scripts/page-metadata.js';
 import { i18n } from '@/i18n.js';
@@ -73,7 +74,7 @@ function focus() {
 }
 
 watch(() => props.antennaId, async () => {
-	antenna.value = await os.api('antennas/show', {
+	antenna.value = await misskeyApi('antennas/show', {
 		antennaId: props.antennaId,
 	});
 }, { immediate: true });
diff --git a/packages/frontend/src/pages/api-console.vue b/packages/frontend/src/pages/api-console.vue
index 0cd4a8dae..645696549 100644
--- a/packages/frontend/src/pages/api-console.vue
+++ b/packages/frontend/src/pages/api-console.vue
@@ -41,7 +41,7 @@ import MkButton from '@/components/MkButton.vue';
 import MkInput from '@/components/MkInput.vue';
 import MkTextarea from '@/components/MkTextarea.vue';
 import MkSwitch from '@/components/MkSwitch.vue';
-import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { definePageMetadata } from '@/scripts/page-metadata.js';
 
 const body = ref('{}');
@@ -51,14 +51,14 @@ const sending = ref(false);
 const res = ref('');
 const withCredential = ref(true);
 
-os.api('endpoints').then(endpointResponse => {
+misskeyApi('endpoints').then(endpointResponse => {
 	endpoints.value = endpointResponse;
 });
 
 function send() {
 	sending.value = true;
 	const requestBody = JSON5.parse(body.value);
-	os.api(endpoint.value as keyof Endpoints, requestBody, requestBody.i || (withCredential.value ? undefined : null)).then(resp => {
+	misskeyApi(endpoint.value as keyof Endpoints, requestBody, requestBody.i || (withCredential.value ? undefined : null)).then(resp => {
 		sending.value = false;
 		res.value = JSON5.stringify(resp, null, 2);
 	}, err => {
@@ -68,7 +68,7 @@ function send() {
 }
 
 function onEndpointChange() {
-	os.api('endpoint', { endpoint: endpoint.value }, withCredential.value ? undefined : null).then(resp => {
+	misskeyApi('endpoint', { endpoint: endpoint.value }, withCredential.value ? undefined : null).then(resp => {
 		const endpointBody = {};
 		for (const p of resp.params) {
 			endpointBody[p.name] =
diff --git a/packages/frontend/src/pages/auth.form.vue b/packages/frontend/src/pages/auth.form.vue
index 8a17e5895..39a7924f9 100644
--- a/packages/frontend/src/pages/auth.form.vue
+++ b/packages/frontend/src/pages/auth.form.vue
@@ -23,7 +23,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 import { computed } from 'vue';
 import * as Misskey from 'misskey-js';
 import MkButton from '@/components/MkButton.vue';
-import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { i18n } from '@/i18n.js';
 
 const props = defineProps<{
@@ -44,7 +44,7 @@ const name = computed(() => {
 });
 
 function cancel() {
-	os.api('auth/deny', {
+	misskeyApi('auth/deny', {
 		token: props.session.token,
 	}).then(() => {
 		emit('denied');
@@ -52,7 +52,7 @@ function cancel() {
 }
 
 function accept() {
-	os.api('auth/accept', {
+	misskeyApi('auth/accept', {
 		token: props.session.token,
 	}).then(() => {
 		emit('accepted');
diff --git a/packages/frontend/src/pages/auth.vue b/packages/frontend/src/pages/auth.vue
index 1b342647f..fd38e22ce 100644
--- a/packages/frontend/src/pages/auth.vue
+++ b/packages/frontend/src/pages/auth.vue
@@ -46,7 +46,7 @@ import { onMounted, ref, computed } from 'vue';
 import * as Misskey from 'misskey-js';
 import XForm from './auth.form.vue';
 import MkSignin from '@/components/MkSignin.vue';
-import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { $i, login } from '@/account.js';
 import { definePageMetadata } from '@/scripts/page-metadata.js';
 import { i18n } from '@/i18n.js';
@@ -75,13 +75,13 @@ onMounted(async () => {
 	if (!$i) return;
 
 	try {
-		session.value = await os.api('auth/session/show', {
+		session.value = await misskeyApi('auth/session/show', {
 			token: props.token,
 		});
 
 		// 既に連携していた場合
 		if (session.value.app.isAuthorized) {
-			await os.api('auth/accept', {
+			await misskeyApi('auth/accept', {
 				token: session.value.token,
 			});
 			accepted();
diff --git a/packages/frontend/src/pages/avatar-decorations.vue b/packages/frontend/src/pages/avatar-decorations.vue
index 87964ac69..376679fd1 100644
--- a/packages/frontend/src/pages/avatar-decorations.vue
+++ b/packages/frontend/src/pages/avatar-decorations.vue
@@ -40,6 +40,7 @@ import MkButton from '@/components/MkButton.vue';
 import MkInput from '@/components/MkInput.vue';
 import MkTextarea from '@/components/MkTextarea.vue';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { i18n } from '@/i18n.js';
 import { definePageMetadata } from '@/scripts/page-metadata.js';
 import MkFolder from '@/components/MkFolder.vue';
@@ -63,7 +64,7 @@ function del(avatarDecoration) {
 	}).then(({ canceled }) => {
 		if (canceled) return;
 		avatarDecorations.value = avatarDecorations.value.filter(x => x !== avatarDecoration);
-		os.api('admin/avatar-decorations/delete', avatarDecoration);
+		misskeyApi('admin/avatar-decorations/delete', avatarDecoration);
 	});
 }
 
@@ -77,7 +78,7 @@ async function save(avatarDecoration) {
 }
 
 function load() {
-	os.api('admin/avatar-decorations/list').then(_avatarDecorations => {
+	misskeyApi('admin/avatar-decorations/list').then(_avatarDecorations => {
 		avatarDecorations.value = _avatarDecorations;
 	});
 }
diff --git a/packages/frontend/src/pages/channel-editor.vue b/packages/frontend/src/pages/channel-editor.vue
index fcbd03553..727778b6e 100644
--- a/packages/frontend/src/pages/channel-editor.vue
+++ b/packages/frontend/src/pages/channel-editor.vue
@@ -76,6 +76,7 @@ import MkInput from '@/components/MkInput.vue';
 import MkColorInput from '@/components/MkColorInput.vue';
 import { selectFile } from '@/scripts/select-file.js';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { useRouter } from '@/router.js';
 import { definePageMetadata } from '@/scripts/page-metadata.js';
 import { i18n } from '@/i18n.js';
@@ -105,7 +106,7 @@ watch(() => bannerId.value, async () => {
 	if (bannerId.value == null) {
 		bannerUrl.value = null;
 	} else {
-		bannerUrl.value = (await os.api('drive/files/show', {
+		bannerUrl.value = (await misskeyApi('drive/files/show', {
 			fileId: bannerId.value,
 		})).url;
 	}
@@ -114,7 +115,7 @@ watch(() => bannerId.value, async () => {
 async function fetchChannel() {
 	if (props.channelId == null) return;
 
-	channel.value = await os.api('channels/show', {
+	channel.value = await misskeyApi('channels/show', {
 		channelId: props.channelId,
 	});
 
@@ -179,7 +180,7 @@ async function archive() {
 
 	if (canceled) return;
 
-	os.api('channels/update', {
+	misskeyApi('channels/update', {
 		channelId: props.channelId,
 		isArchived: true,
 	}).then(() => {
diff --git a/packages/frontend/src/pages/channel.vue b/packages/frontend/src/pages/channel.vue
index af0918965..667563bd1 100644
--- a/packages/frontend/src/pages/channel.vue
+++ b/packages/frontend/src/pages/channel.vue
@@ -74,6 +74,7 @@ import MkPostForm from '@/components/MkPostForm.vue';
 import MkTimeline from '@/components/MkTimeline.vue';
 import XChannelFollowButton from '@/components/MkChannelFollowButton.vue';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { useRouter } from '@/router.js';
 import { $i, iAmModerator } from '@/account.js';
 import { i18n } from '@/i18n.js';
@@ -113,7 +114,7 @@ const featuredPagination = computed(() => ({
 }));
 
 watch(() => props.channelId, async () => {
-	channel.value = await os.api('channels/show', {
+	channel.value = await misskeyApi('channels/show', {
 		channelId: props.channelId,
 	});
 	favorited.value = channel.value.isFavorited ?? false;
diff --git a/packages/frontend/src/pages/clip.vue b/packages/frontend/src/pages/clip.vue
index ec9876f70..e55e99a6f 100644
--- a/packages/frontend/src/pages/clip.vue
+++ b/packages/frontend/src/pages/clip.vue
@@ -32,6 +32,7 @@ import MkNotes from '@/components/MkNotes.vue';
 import { $i } from '@/account.js';
 import { i18n } from '@/i18n.js';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { definePageMetadata } from '@/scripts/page-metadata.js';
 import { url } from '@/config.js';
 import MkButton from '@/components/MkButton.vue';
@@ -56,7 +57,7 @@ const pagination = {
 const isOwned = computed<boolean | null>(() => $i && clip.value && ($i.id === clip.value.userId));
 
 watch(() => props.clipId, async () => {
-	clip.value = await os.api('clips/show', {
+	clip.value = await misskeyApi('clips/show', {
 		clipId: props.clipId,
 	});
 	favorited.value = clip.value.isFavorited;
diff --git a/packages/frontend/src/pages/custom-emojis-manager.vue b/packages/frontend/src/pages/custom-emojis-manager.vue
index 011857688..47594bad4 100644
--- a/packages/frontend/src/pages/custom-emojis-manager.vue
+++ b/packages/frontend/src/pages/custom-emojis-manager.vue
@@ -82,6 +82,7 @@ import MkSwitch from '@/components/MkSwitch.vue';
 import FormSplit from '@/components/form/split.vue';
 import { selectFile } from '@/scripts/select-file.js';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { i18n } from '@/i18n.js';
 import { definePageMetadata } from '@/scripts/page-metadata.js';
 
@@ -177,7 +178,7 @@ const menu = (ev: MouseEvent) => {
 		icon: 'ti ti-download',
 		text: i18n.ts.export,
 		action: async () => {
-			os.api('export-custom-emojis', {
+			misskeyApi('export-custom-emojis', {
 			})
 				.then(() => {
 					os.alert({
@@ -196,7 +197,7 @@ const menu = (ev: MouseEvent) => {
 		text: i18n.ts.import,
 		action: async () => {
 			const file = await selectFile(ev.currentTarget ?? ev.target);
-			os.api('admin/emoji/import-zip', {
+			misskeyApi('admin/emoji/import-zip', {
 				fileId: file.id,
 			})
 				.then(() => {
diff --git a/packages/frontend/src/pages/drive.file.info.vue b/packages/frontend/src/pages/drive.file.info.vue
index 1a2fc197f..4c635028f 100644
--- a/packages/frontend/src/pages/drive.file.info.vue
+++ b/packages/frontend/src/pages/drive.file.info.vue
@@ -79,6 +79,7 @@ import bytes from '@/filters/bytes.js';
 import { infoImageUrl } from '@/instance.js';
 import { i18n } from '@/i18n.js';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { useRouter } from '@/router.js';
 
 const router = useRouter();
@@ -94,7 +95,7 @@ const isImage = computed(() => file.value?.type.startsWith('image/'));
 async function fetch() {
 	fetching.value = true;
 
-	file.value = await os.api('drive/files/show', {
+	file.value = await misskeyApi('drive/files/show', {
 		fileId: props.fileId,
 	}).catch((err) => {
 		console.error(err);
diff --git a/packages/frontend/src/pages/emoji-edit-dialog.vue b/packages/frontend/src/pages/emoji-edit-dialog.vue
index 474e63cb4..e00953c1f 100644
--- a/packages/frontend/src/pages/emoji-edit-dialog.vue
+++ b/packages/frontend/src/pages/emoji-edit-dialog.vue
@@ -85,6 +85,7 @@ import MkInput from '@/components/MkInput.vue';
 import MkInfo from '@/components/MkInfo.vue';
 import MkFolder from '@/components/MkFolder.vue';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { i18n } from '@/i18n.js';
 import { customEmojiCategories } from '@/custom-emojis.js';
 import MkSwitch from '@/components/MkSwitch.vue';
@@ -107,7 +108,7 @@ const rolesThatCanBeUsedThisEmojiAsReaction = ref<Misskey.entities.Role[]>([]);
 const file = ref<Misskey.entities.DriveFile>();
 
 watch(roleIdsThatCanBeUsedThisEmojiAsReaction, async () => {
-	rolesThatCanBeUsedThisEmojiAsReaction.value = (await Promise.all(roleIdsThatCanBeUsedThisEmojiAsReaction.value.map((id) => os.api('admin/roles/show', { roleId: id }).catch(() => null)))).filter(x => x != null);
+	rolesThatCanBeUsedThisEmojiAsReaction.value = (await Promise.all(roleIdsThatCanBeUsedThisEmojiAsReaction.value.map((id) => misskeyApi('admin/roles/show', { roleId: id }).catch(() => null)))).filter(x => x != null);
 }, { immediate: true });
 
 const imgUrl = computed(() => file.value ? file.value.url : props.emoji ? `/emoji/${props.emoji.name}.webp` : null);
@@ -126,7 +127,7 @@ async function changeImage(ev) {
 }
 
 async function addRole() {
-	const roles = await os.api('admin/roles/list');
+	const roles = await misskeyApi('admin/roles/list');
 	const currentRoleIds = rolesThatCanBeUsedThisEmojiAsReaction.value.map(x => x.id);
 
 	const { canceled, result: role } = await os.select({
@@ -188,7 +189,7 @@ async function del() {
 	});
 	if (canceled) return;
 
-	os.api('admin/emoji/delete', {
+	misskeyApi('admin/emoji/delete', {
 		id: props.emoji.id,
 	}).then(() => {
 		emit('done', {
diff --git a/packages/frontend/src/pages/emojis.emoji.vue b/packages/frontend/src/pages/emojis.emoji.vue
index 9ba9047ca..ea6947bbb 100644
--- a/packages/frontend/src/pages/emojis.emoji.vue
+++ b/packages/frontend/src/pages/emojis.emoji.vue
@@ -16,6 +16,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 <script lang="ts" setup>
 import { } from 'vue';
 import * as os from '@/os.js';
+import { misskeyApiGet } from '@/scripts/misskey-api.js';
 import copyToClipboard from '@/scripts/copy-to-clipboard.js';
 import { i18n } from '@/i18n.js';
 
@@ -43,7 +44,7 @@ function menu(ev) {
 		text: i18n.ts.info,
 		icon: 'ti ti-info-circle',
 		action: () => {
-			os.apiGet('emoji', { name: props.emoji.name }).then(res => {
+			misskeyApiGet('emoji', { name: props.emoji.name }).then(res => {
 				os.alert({
 					type: 'info',
 					text: `Name: ${res.name}\nAliases: ${res.aliases.join(' ')}\nCategory: ${res.category}\nisSensitive: ${res.isSensitive}\nlocalOnly: ${res.localOnly}\nLicense: ${res.license}\nURL: ${res.url}`,
diff --git a/packages/frontend/src/pages/explore.roles.vue b/packages/frontend/src/pages/explore.roles.vue
index d30e107e9..f06bd0840 100644
--- a/packages/frontend/src/pages/explore.roles.vue
+++ b/packages/frontend/src/pages/explore.roles.vue
@@ -15,11 +15,11 @@ SPDX-License-Identifier: AGPL-3.0-only
 import { ref } from 'vue';
 import * as Misskey from 'misskey-js';
 import MkRolePreview from '@/components/MkRolePreview.vue';
-import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 
 const roles = ref<Misskey.entities.Role[] | null>(null);
 
-os.api('roles/list').then(res => {
+misskeyApi('roles/list').then(res => {
 	roles.value = res.filter(x => x.target === 'manual').sort((a, b) => b.displayOrder - a.displayOrder);
 });
 </script>
diff --git a/packages/frontend/src/pages/explore.users.vue b/packages/frontend/src/pages/explore.users.vue
index 73c2a94fc..440bd0b94 100644
--- a/packages/frontend/src/pages/explore.users.vue
+++ b/packages/frontend/src/pages/explore.users.vue
@@ -68,7 +68,7 @@ import * as Misskey from 'misskey-js';
 import MkUserList from '@/components/MkUserList.vue';
 import MkFoldableSection from '@/components/MkFoldableSection.vue';
 import MkTab from '@/components/MkTab.vue';
-import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { i18n } from '@/i18n.js';
 
 const props = defineProps<{
@@ -123,14 +123,14 @@ const recentlyRegisteredUsersF = { endpoint: 'users', limit: 10, noPaging: true,
 	sort: '+createdAt',
 } };
 
-os.api('hashtags/list', {
+misskeyApi('hashtags/list', {
 	sort: '+attachedLocalUsers',
 	attachedToLocalUserOnly: true,
 	limit: 30,
 }).then(tags => {
 	tagsLocal.value = tags;
 });
-os.api('hashtags/list', {
+misskeyApi('hashtags/list', {
 	sort: '+attachedRemoteUsers',
 	attachedToRemoteUserOnly: true,
 	limit: 30,
diff --git a/packages/frontend/src/pages/flash/flash-edit.vue b/packages/frontend/src/pages/flash/flash-edit.vue
index 147a381c9..ce077779c 100644
--- a/packages/frontend/src/pages/flash/flash-edit.vue
+++ b/packages/frontend/src/pages/flash/flash-edit.vue
@@ -38,6 +38,7 @@ import { computed, ref } from 'vue';
 import * as Misskey from 'misskey-js';
 import MkButton from '@/components/MkButton.vue';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { i18n } from '@/i18n.js';
 import { definePageMetadata } from '@/scripts/page-metadata.js';
 import MkTextarea from '@/components/MkTextarea.vue';
@@ -369,7 +370,7 @@ const flash = ref<Misskey.entities.Flash | null>(null);
 const visibility = ref<Misskey.entities.FlashUpdateRequest['visibility']>('public');
 
 if (props.id) {
-	flash.value = await os.api('flash/show', {
+	flash.value = await misskeyApi('flash/show', {
 		flashId: props.id,
 	});
 }
diff --git a/packages/frontend/src/pages/flash/flash.vue b/packages/frontend/src/pages/flash/flash.vue
index 13e8184c1..bcffb5601 100644
--- a/packages/frontend/src/pages/flash/flash.vue
+++ b/packages/frontend/src/pages/flash/flash.vue
@@ -62,6 +62,7 @@ import * as Misskey from 'misskey-js';
 import { Interpreter, Parser, values } from '@syuilo/aiscript';
 import MkButton from '@/components/MkButton.vue';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { url } from '@/config.js';
 import { i18n } from '@/i18n.js';
 import { definePageMetadata } from '@/scripts/page-metadata.js';
@@ -84,7 +85,7 @@ const error = ref<any>(null);
 
 function fetchFlash() {
 	flash.value = null;
-	os.api('flash/show', {
+	misskeyApi('flash/show', {
 		flashId: props.id,
 	}).then(_flash => {
 		flash.value = _flash;
diff --git a/packages/frontend/src/pages/follow-requests.vue b/packages/frontend/src/pages/follow-requests.vue
index 51f31b1ca..902e6a4b5 100644
--- a/packages/frontend/src/pages/follow-requests.vue
+++ b/packages/frontend/src/pages/follow-requests.vue
@@ -41,7 +41,7 @@ import { shallowRef, computed } from 'vue';
 import MkPagination from '@/components/MkPagination.vue';
 import MkButton from '@/components/MkButton.vue';
 import { userPage, acct } from '@/filters/user.js';
-import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { i18n } from '@/i18n.js';
 import { definePageMetadata } from '@/scripts/page-metadata.js';
 import { infoImageUrl } from '@/instance.js';
@@ -54,13 +54,13 @@ const pagination = {
 };
 
 function accept(user) {
-	os.api('following/requests/accept', { userId: user.id }).then(() => {
+	misskeyApi('following/requests/accept', { userId: user.id }).then(() => {
 		paginationComponent.value.reload();
 	});
 }
 
 function reject(user) {
-	os.api('following/requests/reject', { userId: user.id }).then(() => {
+	misskeyApi('following/requests/reject', { userId: user.id }).then(() => {
 		paginationComponent.value.reload();
 	});
 }
diff --git a/packages/frontend/src/pages/follow.vue b/packages/frontend/src/pages/follow.vue
index a0a4a480b..5a2160408 100644
--- a/packages/frontend/src/pages/follow.vue
+++ b/packages/frontend/src/pages/follow.vue
@@ -12,9 +12,10 @@ SPDX-License-Identifier: AGPL-3.0-only
 import { } from 'vue';
 import * as Misskey from 'misskey-js';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { mainRouter } from '@/router.js';
 import { i18n } from '@/i18n.js';
-import { defaultStore } from "@/store.js";
+import { defaultStore } from '@/store.js';
 
 async function follow(user): Promise<void> {
 	const { canceled } = await os.confirm({
@@ -42,7 +43,7 @@ if (acct == null) {
 let promise;
 
 if (acct.startsWith('https://')) {
-	promise = os.api('ap/show', {
+	promise = misskeyApi('ap/show', {
 		uri: acct,
 	});
 	promise.then(res => {
@@ -60,7 +61,7 @@ if (acct.startsWith('https://')) {
 		}
 	});
 } else {
-	promise = os.api('users/show', Misskey.acct.parse(acct));
+	promise = misskeyApi('users/show', Misskey.acct.parse(acct));
 	promise.then(user => {
 		follow(user);
 	});
diff --git a/packages/frontend/src/pages/gallery/edit.vue b/packages/frontend/src/pages/gallery/edit.vue
index d711cb4e8..e0c765453 100644
--- a/packages/frontend/src/pages/gallery/edit.vue
+++ b/packages/frontend/src/pages/gallery/edit.vue
@@ -47,6 +47,7 @@ import MkSwitch from '@/components/MkSwitch.vue';
 import FormSuspense from '@/components/form/suspense.vue';
 import { selectFiles } from '@/scripts/select-file.js';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { useRouter } from '@/router.js';
 import { definePageMetadata } from '@/scripts/page-metadata.js';
 import { i18n } from '@/i18n.js';
@@ -107,7 +108,7 @@ async function del() {
 }
 
 watch(() => props.postId, () => {
-	init.value = () => props.postId ? os.api('gallery/posts/show', {
+	init.value = () => props.postId ? misskeyApi('gallery/posts/show', {
 		postId: props.postId,
 	}).then(post => {
 		files.value = post.files ?? [];
diff --git a/packages/frontend/src/pages/gallery/post.vue b/packages/frontend/src/pages/gallery/post.vue
index 77af81cec..f71fe0f26 100644
--- a/packages/frontend/src/pages/gallery/post.vue
+++ b/packages/frontend/src/pages/gallery/post.vue
@@ -66,6 +66,7 @@ import { computed, watch, ref } from 'vue';
 import * as Misskey from 'misskey-js';
 import MkButton from '@/components/MkButton.vue';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import MkContainer from '@/components/MkContainer.vue';
 import MkPagination from '@/components/MkPagination.vue';
 import MkGalleryPostPreview from '@/components/MkGalleryPostPreview.vue';
@@ -97,7 +98,7 @@ const otherPostsPagination = {
 
 function fetchPost() {
 	post.value = null;
-	os.api('gallery/posts/show', {
+	misskeyApi('gallery/posts/show', {
 		postId: props.postId,
 	}).then(_post => {
 		post.value = _post;
diff --git a/packages/frontend/src/pages/install-extentions.vue b/packages/frontend/src/pages/install-extentions.vue
index 811769984..3815658bd 100644
--- a/packages/frontend/src/pages/install-extentions.vue
+++ b/packages/frontend/src/pages/install-extentions.vue
@@ -105,6 +105,7 @@ import MkInfo from '@/components/MkInfo.vue';
 import MkFolder from '@/components/MkFolder.vue';
 import MkKeyValue from '@/components/MkKeyValue.vue';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { AiScriptPluginMeta, parsePluginMeta, installPlugin } from '@/scripts/install-plugin.js';
 import { parseThemeCode, installTheme } from '@/scripts/install-theme.js';
 import { unisonReload } from '@/scripts/unison-reload.js';
@@ -159,7 +160,7 @@ async function fetch() {
 		uiPhase.value = 'error';
 		return;
 	}
-	const res = await os.api('fetch-external-resources', {
+	const res = await misskeyApi('fetch-external-resources', {
 		url: url.value,
 		hash: hash.value,
 	}).catch((err) => {
diff --git a/packages/frontend/src/pages/instance-info.vue b/packages/frontend/src/pages/instance-info.vue
index 97dc0a863..c8a0eeeea 100644
--- a/packages/frontend/src/pages/instance-info.vue
+++ b/packages/frontend/src/pages/instance-info.vue
@@ -129,6 +129,7 @@ import MkKeyValue from '@/components/MkKeyValue.vue';
 import MkSelect from '@/components/MkSelect.vue';
 import MkSwitch from '@/components/MkSwitch.vue';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import number from '@/filters/number.js';
 import { iAmModerator, iAmAdmin } from '@/account.js';
 import { definePageMetadata } from '@/scripts/page-metadata.js';
@@ -164,9 +165,9 @@ const usersPagination = {
 
 async function fetch(): Promise<void> {
 	if (iAmAdmin) {
-		meta.value = await os.api('admin/meta');
+		meta.value = await misskeyApi('admin/meta');
 	}
-	instance.value = await os.api('federation/show-instance', {
+	instance.value = await misskeyApi('federation/show-instance', {
 		host: props.host,
 	});
 	suspended.value = instance.value?.isSuspended ?? false;
@@ -179,7 +180,7 @@ async function toggleBlock(): Promise<void> {
 	if (!meta.value) throw new Error('No meta?');
 	if (!instance.value) throw new Error('No instance?');
 	const { host } = instance.value;
-	await os.api('admin/update-meta', {
+	await misskeyApi('admin/update-meta', {
 		blockedHosts: isBlocked.value ? meta.value.blockedHosts.concat([host]) : meta.value.blockedHosts.filter(x => x !== host),
 	});
 }
@@ -189,14 +190,14 @@ async function toggleSilenced(): Promise<void> {
 	if (!instance.value) throw new Error('No instance?');
 	const { host } = instance.value;
 	const silencedHosts = meta.value.silencedHosts ?? [];
-	await os.api('admin/update-meta', {
+	await misskeyApi('admin/update-meta', {
 		silencedHosts: isSilenced.value ? silencedHosts.concat([host]) : silencedHosts.filter(x => x !== host),
 	});
 }
 
 async function toggleSuspend(): Promise<void> {
 	if (!instance.value) throw new Error('No instance?');
-	await os.api('admin/federation/update-instance', {
+	await misskeyApi('admin/federation/update-instance', {
 		host: instance.value.host,
 		isSuspended: suspended.value,
 	});
@@ -204,7 +205,7 @@ async function toggleSuspend(): Promise<void> {
 
 function refreshMetadata(): void {
 	if (!instance.value) throw new Error('No instance?');
-	os.api('admin/federation/refresh-remote-instance-metadata', {
+	misskeyApi('admin/federation/refresh-remote-instance-metadata', {
 		host: instance.value.host,
 	});
 	os.alert({
diff --git a/packages/frontend/src/pages/invite.vue b/packages/frontend/src/pages/invite.vue
index 25ce38e0e..61030741f 100644
--- a/packages/frontend/src/pages/invite.vue
+++ b/packages/frontend/src/pages/invite.vue
@@ -40,6 +40,7 @@ import { computed, ref, shallowRef } from 'vue';
 import type * as Misskey from 'misskey-js';
 import { i18n } from '@/i18n.js';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import MkButton from '@/components/MkButton.vue';
 import MkPagination, { Paging } from '@/components/MkPagination.vue';
 import MkInviteCode from '@/components/MkInviteCode.vue';
@@ -68,7 +69,7 @@ const resetCycle = computed<null | string>(() => {
 });
 
 async function create() {
-	const ticket = await os.api('invite/create');
+	const ticket = await misskeyApi('invite/create');
 	os.alert({
 		type: 'success',
 		title: i18n.ts.inviteCodeCreated,
@@ -87,7 +88,7 @@ function deleted(id: string) {
 }
 
 async function update() {
-	currentInviteLimit.value = (await os.api('invite/limit')).remaining;
+	currentInviteLimit.value = (await misskeyApi('invite/limit')).remaining;
 }
 
 update();
diff --git a/packages/frontend/src/pages/list.vue b/packages/frontend/src/pages/list.vue
index 936d07884..03db02a35 100644
--- a/packages/frontend/src/pages/list.vue
+++ b/packages/frontend/src/pages/list.vue
@@ -37,6 +37,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 import { watch, computed, ref } from 'vue';
 import * as Misskey from 'misskey-js';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { userPage } from '@/filters/user.js';
 import { i18n } from '@/i18n.js';
 import MkUserCardMini from '@/components/MkUserCardMini.vue';
@@ -53,12 +54,12 @@ const error = ref();
 const users = ref<Misskey.entities.UserDetailed[]>([]);
 
 function fetchList(): void {
-	os.api('users/lists/show', {
+	misskeyApi('users/lists/show', {
 		listId: props.listId,
 		forPublic: true,
 	}).then(_list => {
 		list.value = _list;
-		os.api('users/show', {
+		misskeyApi('users/show', {
 			userIds: list.value.userIds,
 		}).then(_users => {
 			users.value = _users;
diff --git a/packages/frontend/src/pages/miauth.vue b/packages/frontend/src/pages/miauth.vue
index ad9bea454..539cb462a 100644
--- a/packages/frontend/src/pages/miauth.vue
+++ b/packages/frontend/src/pages/miauth.vue
@@ -46,7 +46,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 import { ref, computed } from 'vue';
 import MkSignin from '@/components/MkSignin.vue';
 import MkButton from '@/components/MkButton.vue';
-import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { $i, login } from '@/account.js';
 import { i18n } from '@/i18n.js';
 import { definePageMetadata } from '@/scripts/page-metadata.js';
@@ -65,7 +65,7 @@ const state = ref<string | null>(null);
 
 async function accept(): Promise<void> {
 	state.value = 'waiting';
-	await os.api('miauth/gen-token', {
+	await misskeyApi('miauth/gen-token', {
 		session: props.session,
 		name: props.name,
 		iconUrl: props.icon,
diff --git a/packages/frontend/src/pages/my-antennas/edit.vue b/packages/frontend/src/pages/my-antennas/edit.vue
index 9b3d56ee3..0648f5340 100644
--- a/packages/frontend/src/pages/my-antennas/edit.vue
+++ b/packages/frontend/src/pages/my-antennas/edit.vue
@@ -13,7 +13,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 import { ref } from 'vue';
 import * as Misskey from 'misskey-js';
 import XAntenna from './editor.vue';
-import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { i18n } from '@/i18n.js';
 import { useRouter } from '@/router.js';
 import { definePageMetadata } from '@/scripts/page-metadata.js';
@@ -32,7 +32,7 @@ function onAntennaUpdated() {
 	router.push('/my/antennas');
 }
 
-os.api('antennas/show', { antennaId: props.antennaId }).then((antennaResponse) => {
+misskeyApi('antennas/show', { antennaId: props.antennaId }).then((antennaResponse) => {
 	antenna.value = antennaResponse;
 });
 
diff --git a/packages/frontend/src/pages/my-antennas/editor.vue b/packages/frontend/src/pages/my-antennas/editor.vue
index 9b19206d9..45acbb215 100644
--- a/packages/frontend/src/pages/my-antennas/editor.vue
+++ b/packages/frontend/src/pages/my-antennas/editor.vue
@@ -57,6 +57,7 @@ import MkTextarea from '@/components/MkTextarea.vue';
 import MkSelect from '@/components/MkSelect.vue';
 import MkSwitch from '@/components/MkSwitch.vue';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { i18n } from '@/i18n.js';
 
 const props = defineProps<{
@@ -84,7 +85,7 @@ const userLists = ref<Misskey.entities.UserList[] | null>(null);
 
 watch(() => src.value, async () => {
 	if (src.value === 'list' && userLists.value === null) {
-		userLists.value = await os.api('users/lists/list');
+		userLists.value = await misskeyApi('users/lists/list');
 	}
 });
 
@@ -119,7 +120,7 @@ async function deleteAntenna() {
 	});
 	if (canceled) return;
 
-	await os.api('antennas/delete', {
+	await misskeyApi('antennas/delete', {
 		antennaId: props.antenna.id,
 	});
 
diff --git a/packages/frontend/src/pages/my-clips/index.vue b/packages/frontend/src/pages/my-clips/index.vue
index bc09e916e..850222708 100644
--- a/packages/frontend/src/pages/my-clips/index.vue
+++ b/packages/frontend/src/pages/my-clips/index.vue
@@ -32,6 +32,7 @@ import MkPagination from '@/components/MkPagination.vue';
 import MkButton from '@/components/MkButton.vue';
 import MkClipPreview from '@/components/MkClipPreview.vue';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { i18n } from '@/i18n.js';
 import { definePageMetadata } from '@/scripts/page-metadata.js';
 import { clipsCache } from '@/cache.js';
@@ -48,7 +49,7 @@ const favorites = ref<Misskey.entities.Clip[] | null>(null);
 const pagingComponent = shallowRef<InstanceType<typeof MkPagination>>();
 
 watch(tab, async () => {
-	favorites.value = await os.api('clips/my-favorites');
+	favorites.value = await misskeyApi('clips/my-favorites');
 });
 
 async function create() {
diff --git a/packages/frontend/src/pages/my-lists/list.vue b/packages/frontend/src/pages/my-lists/list.vue
index 482fdcd8f..5798070ad 100644
--- a/packages/frontend/src/pages/my-lists/list.vue
+++ b/packages/frontend/src/pages/my-lists/list.vue
@@ -57,6 +57,7 @@ import { computed, ref, watch } from 'vue';
 import * as Misskey from 'misskey-js';
 import MkButton from '@/components/MkButton.vue';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { mainRouter } from '@/router.js';
 import { definePageMetadata } from '@/scripts/page-metadata.js';
 import { i18n } from '@/i18n.js';
@@ -93,7 +94,7 @@ const membershipsPagination = {
 };
 
 function fetchList() {
-	os.api('users/lists/show', {
+	misskeyApi('users/lists/show', {
 		listId: props.listId,
 	}).then(_list => {
 		list.value = _list;
@@ -121,7 +122,7 @@ async function removeUser(item, ev) {
 		danger: true,
 		action: async () => {
 			if (!list.value) return;
-			os.api('users/lists/pull', {
+			misskeyApi('users/lists/pull', {
 				listId: list.value.id,
 				userId: item.userId,
 			}).then(() => {
@@ -136,7 +137,7 @@ async function showMembershipMenu(item, ev) {
 		text: item.withReplies ? i18n.ts.hideRepliesToOthersInTimeline : i18n.ts.showRepliesToOthersInTimeline,
 		icon: item.withReplies ? 'ti ti-messages-off' : 'ti ti-messages',
 		action: async () => {
-			os.api('users/lists/update-membership', {
+			misskeyApi('users/lists/update-membership', {
 				listId: list.value.id,
 				userId: item.userId,
 				withReplies: !item.withReplies,
diff --git a/packages/frontend/src/pages/note.vue b/packages/frontend/src/pages/note.vue
index ff1e80aaa..7e353e629 100644
--- a/packages/frontend/src/pages/note.vue
+++ b/packages/frontend/src/pages/note.vue
@@ -50,7 +50,7 @@ import MkNoteDetailed from '@/components/MkNoteDetailed.vue';
 import MkNotes from '@/components/MkNotes.vue';
 import MkRemoteCaution from '@/components/MkRemoteCaution.vue';
 import MkButton from '@/components/MkButton.vue';
-import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { definePageMetadata } from '@/scripts/page-metadata.js';
 import { i18n } from '@/i18n.js';
 import { dateString } from '@/filters/date.js';
@@ -90,13 +90,13 @@ function fetchNote() {
 	showPrev.value = false;
 	showNext.value = false;
 	note.value = null;
-	os.api('notes/show', {
+	misskeyApi('notes/show', {
 		noteId: props.noteId,
 	}).then(res => {
 		note.value = res;
 		// 古いノートは被クリップ数をカウントしていないので、2023-10-01以前のものは強制的にnotes/clipsを叩く
 		if (note.value.clippedCount > 0 || new Date(note.value.createdAt).getTime() < new Date('2023-10-01').getTime()) {
-			os.api('notes/clips', {
+			misskeyApi('notes/clips', {
 				noteId: note.value.id,
 			}).then((_clips) => {
 				clips.value = _clips;
diff --git a/packages/frontend/src/pages/page-editor/els/page-editor.el.image.vue b/packages/frontend/src/pages/page-editor/els/page-editor.el.image.vue
index 9d6da653b..561b0142a 100644
--- a/packages/frontend/src/pages/page-editor/els/page-editor.el.image.vue
+++ b/packages/frontend/src/pages/page-editor/els/page-editor.el.image.vue
@@ -26,6 +26,7 @@ import * as Misskey from 'misskey-js';
 import XContainer from '../page-editor.container.vue';
 import MkDriveFileThumbnail from '@/components/MkDriveFileThumbnail.vue';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { i18n } from '@/i18n.js';
 
 const props = defineProps<{
@@ -52,7 +53,7 @@ onMounted(async () => {
 	if (props.modelValue.fileId == null) {
 		await choose();
 	} else {
-		os.api('drive/files/show', {
+		misskeyApi('drive/files/show', {
 			fileId: props.modelValue.fileId,
 		}).then(fileResponse => {
 			file.value = fileResponse;
diff --git a/packages/frontend/src/pages/page-editor/els/page-editor.el.note.vue b/packages/frontend/src/pages/page-editor/els/page-editor.el.note.vue
index ea9d52c2b..ebabc98d2 100644
--- a/packages/frontend/src/pages/page-editor/els/page-editor.el.note.vue
+++ b/packages/frontend/src/pages/page-editor/els/page-editor.el.note.vue
@@ -30,7 +30,7 @@ import MkInput from '@/components/MkInput.vue';
 import MkSwitch from '@/components/MkSwitch.vue';
 import MkNote from '@/components/MkNote.vue';
 import MkNoteDetailed from '@/components/MkNoteDetailed.vue';
-import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { i18n } from '@/i18n.js';
 
 const props = defineProps<{
@@ -53,7 +53,7 @@ watch(id, async () => {
 		...props.modelValue,
 		note: id.value,
 	});
-	note.value = await os.api('notes/show', { noteId: id.value });
+	note.value = await misskeyApi('notes/show', { noteId: id.value });
 }, {
 	immediate: true,
 });
diff --git a/packages/frontend/src/pages/page-editor/page-editor.vue b/packages/frontend/src/pages/page-editor/page-editor.vue
index bcfbf5825..496a8c327 100644
--- a/packages/frontend/src/pages/page-editor/page-editor.vue
+++ b/packages/frontend/src/pages/page-editor/page-editor.vue
@@ -71,6 +71,7 @@ import MkSwitch from '@/components/MkSwitch.vue';
 import MkInput from '@/components/MkInput.vue';
 import { url } from '@/config.js';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { selectFile } from '@/scripts/select-file.js';
 import { mainRouter } from '@/router.js';
 import { i18n } from '@/i18n.js';
@@ -106,7 +107,7 @@ watch(eyeCatchingImageId, async () => {
 	if (eyeCatchingImageId.value == null) {
 		eyeCatchingImage.value = null;
 	} else {
-		eyeCatchingImage.value = await os.api('drive/files/show', {
+		eyeCatchingImage.value = await misskeyApi('drive/files/show', {
 			fileId: eyeCatchingImageId.value,
 		});
 	}
@@ -149,7 +150,7 @@ function save() {
 
 	if (pageId.value) {
 		options.pageId = pageId.value;
-		os.api('pages/update', options)
+		misskeyApi('pages/update', options)
 			.then(page => {
 				currentName.value = name.value.trim();
 				os.alert({
@@ -158,7 +159,7 @@ function save() {
 				});
 			}).catch(onError);
 	} else {
-		os.api('pages/create', options)
+		misskeyApi('pages/create', options)
 			.then(created => {
 				pageId.value = created.id;
 				currentName.value = name.value.trim();
@@ -177,7 +178,7 @@ function del() {
 		text: i18n.t('removeAreYouSure', { x: title.value.trim() }),
 	}).then(({ canceled }) => {
 		if (canceled) return;
-		os.api('pages/delete', {
+		misskeyApi('pages/delete', {
 			pageId: pageId.value,
 		}).then(() => {
 			os.alert({
@@ -192,7 +193,7 @@ function del() {
 function duplicate() {
 	title.value = title.value + ' - copy';
 	name.value = name.value + '-copy';
-	os.api('pages/create', getSaveOptions()).then(created => {
+	misskeyApi('pages/create', getSaveOptions()).then(created => {
 		pageId.value = created.id;
 		currentName.value = name.value.trim();
 		os.alert({
@@ -236,11 +237,11 @@ function removeEyeCatchingImage() {
 
 async function init() {
 	if (props.initPageId) {
-		page.value = await os.api('pages/show', {
+		page.value = await misskeyApi('pages/show', {
 			pageId: props.initPageId,
 		});
 	} else if (props.initPageName && props.initUser) {
-		page.value = await os.api('pages/show', {
+		page.value = await misskeyApi('pages/show', {
 			name: props.initPageName,
 			username: props.initUser,
 		});
diff --git a/packages/frontend/src/pages/page.vue b/packages/frontend/src/pages/page.vue
index 11c8e15e1..7b4f06d5c 100644
--- a/packages/frontend/src/pages/page.vue
+++ b/packages/frontend/src/pages/page.vue
@@ -81,6 +81,7 @@ import * as Misskey from 'misskey-js';
 import XPage from '@/components/page/page.vue';
 import MkButton from '@/components/MkButton.vue';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { url } from '@/config.js';
 import MkMediaImage from '@/components/MkMediaImage.vue';
 import MkFollowButton from '@/components/MkFollowButton.vue';
@@ -113,7 +114,7 @@ const path = computed(() => props.username + '/' + props.pageName);
 
 function fetchPage() {
 	page.value = null;
-	os.api('pages/show', {
+	misskeyApi('pages/show', {
 		name: props.pageName,
 		username: props.username,
 	}).then(async _page => {
diff --git a/packages/frontend/src/pages/registry.keys.vue b/packages/frontend/src/pages/registry.keys.vue
index 822a39c2e..8ae8495de 100644
--- a/packages/frontend/src/pages/registry.keys.vue
+++ b/packages/frontend/src/pages/registry.keys.vue
@@ -36,6 +36,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 import { watch, computed, ref } from 'vue';
 import JSON5 from 'json5';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { i18n } from '@/i18n.js';
 import { definePageMetadata } from '@/scripts/page-metadata.js';
 import FormLink from '@/components/form/link.vue';
@@ -54,7 +55,7 @@ const scope = computed(() => props.path ? props.path.split('/') : []);
 const keys = ref<any>(null);
 
 function fetchKeys() {
-	os.api('i/registry/keys-with-type', {
+	misskeyApi('i/registry/keys-with-type', {
 		scope: scope.value,
 		domain: props.domain === '@' ? null : props.domain,
 	}).then(res => {
diff --git a/packages/frontend/src/pages/registry.value.vue b/packages/frontend/src/pages/registry.value.vue
index 243c69eed..f35555020 100644
--- a/packages/frontend/src/pages/registry.value.vue
+++ b/packages/frontend/src/pages/registry.value.vue
@@ -48,6 +48,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 import { watch, computed, ref } from 'vue';
 import JSON5 from 'json5';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { i18n } from '@/i18n.js';
 import { definePageMetadata } from '@/scripts/page-metadata.js';
 import MkButton from '@/components/MkButton.vue';
@@ -68,7 +69,7 @@ const value = ref<any>(null);
 const valueForEditor = ref<string | null>(null);
 
 function fetchValue() {
-	os.api('i/registry/get-detail', {
+	misskeyApi('i/registry/get-detail', {
 		scope: scope.value,
 		key: key.value,
 		domain: props.domain === '@' ? null : props.domain,
diff --git a/packages/frontend/src/pages/registry.vue b/packages/frontend/src/pages/registry.vue
index f45f8922a..ca54d23b6 100644
--- a/packages/frontend/src/pages/registry.vue
+++ b/packages/frontend/src/pages/registry.vue
@@ -26,6 +26,7 @@ import { ref, computed } from 'vue';
 import * as Misskey from 'misskey-js';
 import JSON5 from 'json5';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { i18n } from '@/i18n.js';
 import { definePageMetadata } from '@/scripts/page-metadata.js';
 import FormLink from '@/components/form/link.vue';
@@ -35,7 +36,7 @@ import MkButton from '@/components/MkButton.vue';
 const scopesWithDomain = ref<Misskey.entities.IRegistryScopesWithDomainResponse | null>(null);
 
 function fetchScopes() {
-	os.api('i/registry/scopes-with-domain').then(res => {
+	misskeyApi('i/registry/scopes-with-domain').then(res => {
 		scopesWithDomain.value = res;
 	});
 }
diff --git a/packages/frontend/src/pages/role.vue b/packages/frontend/src/pages/role.vue
index 10642ddef..67f18ee87 100644
--- a/packages/frontend/src/pages/role.vue
+++ b/packages/frontend/src/pages/role.vue
@@ -38,7 +38,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 <script lang="ts" setup>
 import { computed, watch, ref } from 'vue';
 import * as Misskey from 'misskey-js';
-import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import MkUserList from '@/components/MkUserList.vue';
 import { definePageMetadata } from '@/scripts/page-metadata.js';
 import { i18n } from '@/i18n.js';
@@ -59,7 +59,7 @@ const error = ref();
 const visible = ref(false);
 
 watch(() => props.role, () => {
-	os.api('roles/show', {
+	misskeyApi('roles/show', {
 		roleId: props.role,
 	}).then(res => {
 		role.value = res;
diff --git a/packages/frontend/src/pages/search.note.vue b/packages/frontend/src/pages/search.note.vue
index 5c0b54e2d..1b12910a3 100644
--- a/packages/frontend/src/pages/search.note.vue
+++ b/packages/frontend/src/pages/search.note.vue
@@ -49,6 +49,7 @@ import MkButton from '@/components/MkButton.vue';
 import MkSwitch from '@/components/MkSwitch.vue';
 import { i18n } from '@/i18n.js';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import MkFoldableSection from '@/components/MkFoldableSection.vue';
 import { useRouter } from '@/router.js';
 import MkFolder from '@/components/MkFolder.vue';
@@ -74,7 +75,7 @@ async function search() {
 	if (query == null || query === '') return;
 
 	if (query.startsWith('https://')) {
-		const promise = os.api('ap/show', {
+		const promise = misskeyApi('ap/show', {
 			uri: query,
 		});
 
diff --git a/packages/frontend/src/pages/search.user.vue b/packages/frontend/src/pages/search.user.vue
index 829c706e0..5e9048ee5 100644
--- a/packages/frontend/src/pages/search.user.vue
+++ b/packages/frontend/src/pages/search.user.vue
@@ -33,6 +33,7 @@ import MkButton from '@/components/MkButton.vue';
 import { i18n } from '@/i18n.js';
 import * as os from '@/os.js';
 import MkFoldableSection from '@/components/MkFoldableSection.vue';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { useRouter } from '@/router.js';
 
 const router = useRouter();
@@ -48,7 +49,7 @@ async function search() {
 	if (query == null || query === '') return;
 
 	if (query.startsWith('https://')) {
-		const promise = os.api('ap/show', {
+		const promise = misskeyApi('ap/show', {
 			uri: query,
 		});
 
diff --git a/packages/frontend/src/pages/settings/accounts.vue b/packages/frontend/src/pages/settings/accounts.vue
index 4320ad7e9..1c96773b9 100644
--- a/packages/frontend/src/pages/settings/accounts.vue
+++ b/packages/frontend/src/pages/settings/accounts.vue
@@ -24,6 +24,7 @@ import type * as Misskey from 'misskey-js';
 import FormSuspense from '@/components/form/suspense.vue';
 import MkButton from '@/components/MkButton.vue';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { getAccounts, addAccount as addAccounts, removeAccount as _removeAccount, login, $i } from '@/account.js';
 import { i18n } from '@/i18n.js';
 import { definePageMetadata } from '@/scripts/page-metadata.js';
@@ -36,7 +37,7 @@ const init = async () => {
 	getAccounts().then(accounts => {
 		storedAccounts.value = accounts.filter(x => x.id !== $i!.id);
 
-		return os.api('users/show', {
+		return misskeyApi('users/show', {
 			userIds: storedAccounts.value.map(x => x.id),
 		});
 	}).then(response => {
diff --git a/packages/frontend/src/pages/settings/api.vue b/packages/frontend/src/pages/settings/api.vue
index eee7884aa..35275c7dc 100644
--- a/packages/frontend/src/pages/settings/api.vue
+++ b/packages/frontend/src/pages/settings/api.vue
@@ -16,6 +16,7 @@ import { defineAsyncComponent, ref, computed } from 'vue';
 import FormLink from '@/components/form/link.vue';
 import MkButton from '@/components/MkButton.vue';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { i18n } from '@/i18n.js';
 import { definePageMetadata } from '@/scripts/page-metadata.js';
 
@@ -25,7 +26,7 @@ function generateToken() {
 	os.popup(defineAsyncComponent(() => import('@/components/MkTokenGenerateWindow.vue')), {}, {
 		done: async result => {
 			const { name, permissions } = result;
-			const { token } = await os.api('miauth/gen-token', {
+			const { token } = await misskeyApi('miauth/gen-token', {
 				session: null,
 				name: name,
 				permission: permissions,
diff --git a/packages/frontend/src/pages/settings/apps.vue b/packages/frontend/src/pages/settings/apps.vue
index 419bcd6fe..4a778d4b3 100644
--- a/packages/frontend/src/pages/settings/apps.vue
+++ b/packages/frontend/src/pages/settings/apps.vue
@@ -47,7 +47,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 <script lang="ts" setup>
 import { ref, computed } from 'vue';
 import FormPagination from '@/components/MkPagination.vue';
-import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { i18n } from '@/i18n.js';
 import { definePageMetadata } from '@/scripts/page-metadata.js';
 import MkKeyValue from '@/components/MkKeyValue.vue';
@@ -66,7 +66,7 @@ const pagination = {
 };
 
 function revoke(token) {
-	os.api('i/revoke-token', { tokenId: token.id }).then(() => {
+	misskeyApi('i/revoke-token', { tokenId: token.id }).then(() => {
 		list.value.reload();
 	});
 }
diff --git a/packages/frontend/src/pages/settings/avatar-decoration.vue b/packages/frontend/src/pages/settings/avatar-decoration.vue
index eb25f25ec..70565cc99 100644
--- a/packages/frontend/src/pages/settings/avatar-decoration.vue
+++ b/packages/frontend/src/pages/settings/avatar-decoration.vue
@@ -50,6 +50,7 @@ import * as Misskey from 'misskey-js';
 import XDecoration from './avatar-decoration.decoration.vue';
 import MkButton from '@/components/MkButton.vue';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { i18n } from '@/i18n.js';
 import { signinRequired } from '@/account.js';
 import MkInfo from '@/components/MkInfo.vue';
@@ -60,7 +61,7 @@ const $i = signinRequired();
 const loading = ref(true);
 const avatarDecorations = ref<Misskey.entities.GetAvatarDecorationsResponse>([]);
 
-os.api('get-avatar-decorations').then(_avatarDecorations => {
+misskeyApi('get-avatar-decorations').then(_avatarDecorations => {
 	avatarDecorations.value = _avatarDecorations;
 	loading.value = false;
 });
diff --git a/packages/frontend/src/pages/settings/drive-cleaner.vue b/packages/frontend/src/pages/settings/drive-cleaner.vue
index 4efcdb31d..496c8d94d 100644
--- a/packages/frontend/src/pages/settings/drive-cleaner.vue
+++ b/packages/frontend/src/pages/settings/drive-cleaner.vue
@@ -51,6 +51,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 import { computed, ref, watch } from 'vue';
 import tinycolor from 'tinycolor2';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import MkPagination from '@/components/MkPagination.vue';
 import MkDriveFileThumbnail from '@/components/MkDriveFileThumbnail.vue';
 import { i18n } from '@/i18n.js';
@@ -94,7 +95,7 @@ watch(sortModeSelect, () => {
 
 function fetchDriveInfo(): void {
 	fetching.value = true;
-	os.api('drive').then(info => {
+	misskeyApi('drive').then(info => {
 		capacity.value = info.capacity;
 		usage.value = info.usage;
 		fetching.value = false;
diff --git a/packages/frontend/src/pages/settings/drive.vue b/packages/frontend/src/pages/settings/drive.vue
index e3a7b8ca8..d4b23f47c 100644
--- a/packages/frontend/src/pages/settings/drive.vue
+++ b/packages/frontend/src/pages/settings/drive.vue
@@ -66,6 +66,7 @@ import FormSection from '@/components/form/section.vue';
 import MkKeyValue from '@/components/MkKeyValue.vue';
 import FormSplit from '@/components/form/split.vue';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import bytes from '@/filters/bytes.js';
 import { defaultStore } from '@/store.js';
 import MkChart from '@/components/MkChart.vue';
@@ -95,14 +96,14 @@ const meterStyle = computed(() => {
 
 const keepOriginalUploading = computed(defaultStore.makeGetterSetter('keepOriginalUploading'));
 
-os.api('drive').then(info => {
+misskeyApi('drive').then(info => {
 	capacity.value = info.capacity;
 	usage.value = info.usage;
 	fetching.value = false;
 });
 
 if (defaultStore.state.uploadFolder) {
-	os.api('drive/folders/show', {
+	misskeyApi('drive/folders/show', {
 		folderId: defaultStore.state.uploadFolder,
 	}).then(response => {
 		uploadFolder.value = response;
@@ -114,7 +115,7 @@ function chooseUploadFolder() {
 		defaultStore.set('uploadFolder', folder ? folder.id : null);
 		os.success();
 		if (defaultStore.state.uploadFolder) {
-			uploadFolder.value = await os.api('drive/folders/show', {
+			uploadFolder.value = await misskeyApi('drive/folders/show', {
 				folderId: defaultStore.state.uploadFolder,
 			});
 		} else {
@@ -124,7 +125,7 @@ function chooseUploadFolder() {
 }
 
 function saveProfile() {
-	os.api('i/update', {
+	misskeyApi('i/update', {
 		alwaysMarkNsfw: !!alwaysMarkNsfw.value,
 		autoSensitive: !!autoSensitive.value,
 	}).catch(err => {
diff --git a/packages/frontend/src/pages/settings/email.vue b/packages/frontend/src/pages/settings/email.vue
index 015152c50..c2205dcb0 100644
--- a/packages/frontend/src/pages/settings/email.vue
+++ b/packages/frontend/src/pages/settings/email.vue
@@ -54,6 +54,7 @@ import MkInfo from '@/components/MkInfo.vue';
 import MkInput from '@/components/MkInput.vue';
 import MkSwitch from '@/components/MkSwitch.vue';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { signinRequired } from '@/account.js';
 import { i18n } from '@/i18n.js';
 import { definePageMetadata } from '@/scripts/page-metadata.js';
@@ -64,7 +65,7 @@ const $i = signinRequired();
 const emailAddress = ref($i.email);
 
 const onChangeReceiveAnnouncementEmail = (v) => {
-	os.api('i/update', {
+	misskeyApi('i/update', {
 		receiveAnnouncementEmail: v,
 	});
 };
@@ -87,7 +88,7 @@ const emailNotification_follow = ref($i.emailNotificationTypes.includes('follow'
 const emailNotification_receiveFollowRequest = ref($i.emailNotificationTypes.includes('receiveFollowRequest'));
 
 const saveNotificationSettings = () => {
-	os.api('i/update', {
+	misskeyApi('i/update', {
 		emailNotificationTypes: [
 			...[emailNotification_mention.value ? 'mention' : null],
 			...[emailNotification_reply.value ? 'reply' : null],
diff --git a/packages/frontend/src/pages/settings/general.vue b/packages/frontend/src/pages/settings/general.vue
index 3e5f5cb8c..3d5fa66d9 100644
--- a/packages/frontend/src/pages/settings/general.vue
+++ b/packages/frontend/src/pages/settings/general.vue
@@ -234,6 +234,7 @@ import MkInfo from '@/components/MkInfo.vue';
 import { langs } from '@/config.js';
 import { defaultStore } from '@/store.js';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { unisonReload } from '@/scripts/unison-reload.js';
 import { i18n } from '@/i18n.js';
 import { definePageMetadata } from '@/scripts/page-metadata.js';
@@ -368,7 +369,7 @@ function removeEmojiIndex(lang: string) {
 }
 
 async function setPinnedList() {
-	const lists = await os.api('users/lists/list');
+	const lists = await misskeyApi('users/lists/list');
 	const { canceled, result: list } = await os.select({
 		title: i18n.ts.selectList,
 		items: lists.map(x => ({
diff --git a/packages/frontend/src/pages/settings/import-export.vue b/packages/frontend/src/pages/settings/import-export.vue
index d2dc3ea8b..990eff99c 100644
--- a/packages/frontend/src/pages/settings/import-export.vue
+++ b/packages/frontend/src/pages/settings/import-export.vue
@@ -117,6 +117,7 @@ import FormSection from '@/components/form/section.vue';
 import MkFolder from '@/components/MkFolder.vue';
 import MkSwitch from '@/components/MkSwitch.vue';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { selectFile } from '@/scripts/select-file.js';
 import { i18n } from '@/i18n.js';
 import { definePageMetadata } from '@/scripts/page-metadata.js';
@@ -149,15 +150,15 @@ const onError = (ev) => {
 };
 
 const exportNotes = () => {
-	os.api('i/export-notes', {}).then(onExportSuccess).catch(onError);
+	misskeyApi('i/export-notes', {}).then(onExportSuccess).catch(onError);
 };
 
 const exportFavorites = () => {
-	os.api('i/export-favorites', {}).then(onExportSuccess).catch(onError);
+	misskeyApi('i/export-favorites', {}).then(onExportSuccess).catch(onError);
 };
 
 const exportFollowing = () => {
-	os.api('i/export-following', {
+	misskeyApi('i/export-following', {
 		excludeMuting: excludeMutingUsers.value,
 		excludeInactive: excludeInactiveUsers.value,
 	})
@@ -165,24 +166,24 @@ const exportFollowing = () => {
 };
 
 const exportBlocking = () => {
-	os.api('i/export-blocking', {}).then(onExportSuccess).catch(onError);
+	misskeyApi('i/export-blocking', {}).then(onExportSuccess).catch(onError);
 };
 
 const exportUserLists = () => {
-	os.api('i/export-user-lists', {}).then(onExportSuccess).catch(onError);
+	misskeyApi('i/export-user-lists', {}).then(onExportSuccess).catch(onError);
 };
 
 const exportMuting = () => {
-	os.api('i/export-mute', {}).then(onExportSuccess).catch(onError);
+	misskeyApi('i/export-mute', {}).then(onExportSuccess).catch(onError);
 };
 
 const exportAntennas = () => {
-	os.api('i/export-antennas', {}).then(onExportSuccess).catch(onError);
+	misskeyApi('i/export-antennas', {}).then(onExportSuccess).catch(onError);
 };
 
 const importFollowing = async (ev) => {
 	const file = await selectFile(ev.currentTarget ?? ev.target);
-	os.api('i/import-following', {
+	misskeyApi('i/import-following', {
 		fileId: file.id,
 		withReplies: withReplies.value,
 	}).then(onImportSuccess).catch(onError);
@@ -190,22 +191,22 @@ const importFollowing = async (ev) => {
 
 const importUserLists = async (ev) => {
 	const file = await selectFile(ev.currentTarget ?? ev.target);
-	os.api('i/import-user-lists', { fileId: file.id }).then(onImportSuccess).catch(onError);
+	misskeyApi('i/import-user-lists', { fileId: file.id }).then(onImportSuccess).catch(onError);
 };
 
 const importMuting = async (ev) => {
 	const file = await selectFile(ev.currentTarget ?? ev.target);
-	os.api('i/import-muting', { fileId: file.id }).then(onImportSuccess).catch(onError);
+	misskeyApi('i/import-muting', { fileId: file.id }).then(onImportSuccess).catch(onError);
 };
 
 const importBlocking = async (ev) => {
 	const file = await selectFile(ev.currentTarget ?? ev.target);
-	os.api('i/import-blocking', { fileId: file.id }).then(onImportSuccess).catch(onError);
+	misskeyApi('i/import-blocking', { fileId: file.id }).then(onImportSuccess).catch(onError);
 };
 
 const importAntennas = async (ev) => {
 	const file = await selectFile(ev.currentTarget ?? ev.target);
-	os.api('i/import-antennas', { fileId: file.id }).then(onImportSuccess).catch(onError);
+	misskeyApi('i/import-antennas', { fileId: file.id }).then(onImportSuccess).catch(onError);
 };
 
 const headerActions = computed(() => []);
diff --git a/packages/frontend/src/pages/settings/migration.vue b/packages/frontend/src/pages/settings/migration.vue
index d4c51a7c8..2699f0ad6 100644
--- a/packages/frontend/src/pages/settings/migration.vue
+++ b/packages/frontend/src/pages/settings/migration.vue
@@ -66,6 +66,7 @@ import MkButton from '@/components/MkButton.vue';
 import MkFolder from '@/components/MkFolder.vue';
 import MkUserInfo from '@/components/MkUserInfo.vue';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { i18n } from '@/i18n.js';
 import { definePageMetadata } from '@/scripts/page-metadata.js';
 import { signinRequired } from '@/account.js';
@@ -79,13 +80,13 @@ const accountAliases = ref(['']);
 
 async function init() {
 	if ($i.movedTo) {
-		movedTo.value = await os.api('users/show', { userId: $i.movedTo });
+		movedTo.value = await misskeyApi('users/show', { userId: $i.movedTo });
 	} else {
 		moveToAccount.value = '';
 	}
 
 	if ($i.alsoKnownAs && $i.alsoKnownAs.length > 0) {
-		const alsoKnownAs = await os.api('users/show', { userIds: $i.alsoKnownAs });
+		const alsoKnownAs = await misskeyApi('users/show', { userIds: $i.alsoKnownAs });
 		accountAliases.value = (alsoKnownAs && alsoKnownAs.length > 0) ? alsoKnownAs.map(user => `@${Misskey.acct.toString(user)}`) : [''];
 	} else {
 		accountAliases.value = [''];
diff --git a/packages/frontend/src/pages/settings/mute-block.instance-mute.vue b/packages/frontend/src/pages/settings/mute-block.instance-mute.vue
index 8dc3e1acb..f986be41c 100644
--- a/packages/frontend/src/pages/settings/mute-block.instance-mute.vue
+++ b/packages/frontend/src/pages/settings/mute-block.instance-mute.vue
@@ -19,8 +19,8 @@ import { ref, watch } from 'vue';
 import MkTextarea from '@/components/MkTextarea.vue';
 import MkInfo from '@/components/MkInfo.vue';
 import MkButton from '@/components/MkButton.vue';
-import * as os from '@/os.js';
 import { signinRequired } from '@/account.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { i18n } from '@/i18n.js';
 
 const $i = signinRequired();
@@ -34,7 +34,7 @@ async function save() {
 		.map(el => el.trim())
 		.filter(el => el);
 
-	await os.api('i/update', {
+	await misskeyApi('i/update', {
 		mutedInstances: mutes,
 	});
 
diff --git a/packages/frontend/src/pages/settings/mute-block.vue b/packages/frontend/src/pages/settings/mute-block.vue
index dfb72a87d..bc31025e5 100644
--- a/packages/frontend/src/pages/settings/mute-block.vue
+++ b/packages/frontend/src/pages/settings/mute-block.vue
@@ -135,6 +135,7 @@ import { i18n } from '@/i18n.js';
 import { definePageMetadata } from '@/scripts/page-metadata.js';
 import MkUserCardMini from '@/components/MkUserCardMini.vue';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { infoImageUrl } from '@/instance.js';
 import { signinRequired } from '@/account.js';
 import MkFolder from '@/components/MkFolder.vue';
@@ -218,11 +219,11 @@ async function toggleBlockItem(item) {
 }
 
 async function saveMutedWords(mutedWords: (string | string[])[]) {
-	await os.api('i/update', { mutedWords });
+	await misskeyApi('i/update', { mutedWords });
 }
 
 async function saveHardMutedWords(hardMutedWords: (string | string[])[]) {
-	await os.api('i/update', { hardMutedWords });
+	await misskeyApi('i/update', { hardMutedWords });
 }
 
 const headerActions = computed(() => []);
diff --git a/packages/frontend/src/pages/settings/notifications.vue b/packages/frontend/src/pages/settings/notifications.vue
index 1e9515e58..766f33ff6 100644
--- a/packages/frontend/src/pages/settings/notifications.vue
+++ b/packages/frontend/src/pages/settings/notifications.vue
@@ -63,6 +63,7 @@ import MkFolder from '@/components/MkFolder.vue';
 import MkSwitch from '@/components/MkSwitch.vue';
 import * as os from '@/os.js';
 import { signinRequired } from '@/account.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { i18n } from '@/i18n.js';
 import { definePageMetadata } from '@/scripts/page-metadata.js';
 import MkPushNotificationAllowButton from '@/components/MkPushNotificationAllowButton.vue';
@@ -75,7 +76,7 @@ const nonConfigurableNotificationTypes = ['note', 'roleAssigned', 'followRequest
 const allowButton = shallowRef<InstanceType<typeof MkPushNotificationAllowButton>>();
 const pushRegistrationInServer = computed(() => allowButton.value?.pushRegistrationInServer);
 const sendReadMessage = computed(() => pushRegistrationInServer.value?.sendReadMessage || false);
-const userLists = await os.api('users/lists/list');
+const userLists = await misskeyApi('users/lists/list');
 
 async function readAllUnreadNotes() {
 	await os.apiWithDialog('i/read-all-unread-notes');
@@ -109,7 +110,7 @@ function onChangeSendReadMessage(v: boolean) {
 }
 
 function testNotification(): void {
-	os.api('notifications/test-notification');
+	misskeyApi('notifications/test-notification');
 }
 
 const headerActions = computed(() => []);
diff --git a/packages/frontend/src/pages/settings/other.vue b/packages/frontend/src/pages/settings/other.vue
index f6f0b8daa..c4367da1a 100644
--- a/packages/frontend/src/pages/settings/other.vue
+++ b/packages/frontend/src/pages/settings/other.vue
@@ -93,6 +93,7 @@ import FormInfo from '@/components/MkInfo.vue';
 import MkKeyValue from '@/components/MkKeyValue.vue';
 import MkButton from '@/components/MkButton.vue';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { defaultStore } from '@/store.js';
 import { signout, signinRequired } from '@/account.js';
 import { i18n } from '@/i18n.js';
@@ -148,7 +149,7 @@ async function updateRepliesAll(withReplies: boolean) {
 	});
 	if (canceled) return;
 
-	os.api('following/update-all', { withReplies });
+	misskeyApi('following/update-all', { withReplies });
 }
 
 watch([
diff --git a/packages/frontend/src/pages/settings/preferences-backups.vue b/packages/frontend/src/pages/settings/preferences-backups.vue
index cc6223218..ea9c5949a 100644
--- a/packages/frontend/src/pages/settings/preferences-backups.vue
+++ b/packages/frontend/src/pages/settings/preferences-backups.vue
@@ -43,6 +43,7 @@ import FormSection from '@/components/form/section.vue';
 import MkButton from '@/components/MkButton.vue';
 import MkInfo from '@/components/MkInfo.vue';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { ColdDeviceStorage, defaultStore } from '@/store.js';
 import { unisonReload } from '@/scripts/unison-reload.js';
 import { useStream } from '@/stream.js';
@@ -144,7 +145,7 @@ const connection = $i && useStream().useChannel('main');
 
 const profiles = ref<Record<string, Profile> | null>(null);
 
-os.api('i/registry/get-all', { scope })
+misskeyApi('i/registry/get-all', { scope })
 	.then(res => {
 		profiles.value = res || {};
 	});
diff --git a/packages/frontend/src/pages/settings/privacy.vue b/packages/frontend/src/pages/settings/privacy.vue
index 4f5bc847a..3698590d5 100644
--- a/packages/frontend/src/pages/settings/privacy.vue
+++ b/packages/frontend/src/pages/settings/privacy.vue
@@ -77,7 +77,7 @@ import MkSwitch from '@/components/MkSwitch.vue';
 import MkSelect from '@/components/MkSelect.vue';
 import FormSection from '@/components/form/section.vue';
 import MkFolder from '@/components/MkFolder.vue';
-import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { defaultStore } from '@/store.js';
 import { i18n } from '@/i18n.js';
 import { signinRequired } from '@/account.js';
@@ -101,7 +101,7 @@ const rememberNoteVisibility = computed(defaultStore.makeGetterSetter('rememberN
 const keepCw = computed(defaultStore.makeGetterSetter('keepCw'));
 
 function save() {
-	os.api('i/update', {
+	misskeyApi('i/update', {
 		isLocked: !!isLocked.value,
 		autoAcceptFollowed: !!autoAcceptFollowed.value,
 		noCrawle: !!noCrawle.value,
diff --git a/packages/frontend/src/pages/settings/security.vue b/packages/frontend/src/pages/settings/security.vue
index 3f85f27e4..0787e0c3a 100644
--- a/packages/frontend/src/pages/settings/security.vue
+++ b/packages/frontend/src/pages/settings/security.vue
@@ -47,6 +47,7 @@ import FormSlot from '@/components/form/slot.vue';
 import MkButton from '@/components/MkButton.vue';
 import MkPagination from '@/components/MkPagination.vue';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { i18n } from '@/i18n.js';
 import { definePageMetadata } from '@/scripts/page-metadata.js';
 
@@ -92,7 +93,7 @@ async function regenerateToken() {
 	const auth = await os.authenticateDialog();
 	if (auth.canceled) return;
 
-	os.api('i/regenerate-token', {
+	misskeyApi('i/regenerate-token', {
 		password: auth.result.password,
 		token: auth.result.token,
 	});
diff --git a/packages/frontend/src/pages/settings/sounds.sound.vue b/packages/frontend/src/pages/settings/sounds.sound.vue
index 2f4cd1be2..57bafce0a 100644
--- a/packages/frontend/src/pages/settings/sounds.sound.vue
+++ b/packages/frontend/src/pages/settings/sounds.sound.vue
@@ -32,6 +32,7 @@ import MkButton from '@/components/MkButton.vue';
 import MkRange from '@/components/MkRange.vue';
 import { i18n } from '@/i18n.js';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { playFile, soundsTypes, getSoundDuration } from '@/scripts/sound.js';
 import { selectFile } from '@/scripts/select-file.js';
 
@@ -53,7 +54,7 @@ const fileName = ref<string>('');
 const volume = ref(props.volume);
 
 if (type.value === '_driveFile_' && fileId.value) {
-	const apiRes = await os.api('drive/files/show', {
+	const apiRes = await misskeyApi('drive/files/show', {
 		fileId: fileId.value,
 	});
 	fileName.value = apiRes.name;
diff --git a/packages/frontend/src/pages/settings/statusbar.vue b/packages/frontend/src/pages/settings/statusbar.vue
index 294da80bb..b347a869f 100644
--- a/packages/frontend/src/pages/settings/statusbar.vue
+++ b/packages/frontend/src/pages/settings/statusbar.vue
@@ -21,7 +21,7 @@ import { v4 as uuid } from 'uuid';
 import XStatusbar from './statusbar.statusbar.vue';
 import MkFolder from '@/components/MkFolder.vue';
 import MkButton from '@/components/MkButton.vue';
-import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { defaultStore } from '@/store.js';
 import { i18n } from '@/i18n.js';
 import { definePageMetadata } from '@/scripts/page-metadata.js';
@@ -31,7 +31,7 @@ const statusbars = defaultStore.reactiveState.statusbars;
 const userLists = ref<Misskey.entities.UserList[] | null>(null);
 
 onMounted(() => {
-	os.api('users/lists/list').then(res => {
+	misskeyApi('users/lists/list').then(res => {
 		userLists.value = res;
 	});
 });
diff --git a/packages/frontend/src/pages/settings/webhook.edit.vue b/packages/frontend/src/pages/settings/webhook.edit.vue
index c1695dc6a..9eb344bd4 100644
--- a/packages/frontend/src/pages/settings/webhook.edit.vue
+++ b/packages/frontend/src/pages/settings/webhook.edit.vue
@@ -48,6 +48,7 @@ import FormSection from '@/components/form/section.vue';
 import MkSwitch from '@/components/MkSwitch.vue';
 import MkButton from '@/components/MkButton.vue';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { i18n } from '@/i18n.js';
 import { definePageMetadata } from '@/scripts/page-metadata.js';
 import { useRouter } from '@/router.js';
@@ -58,7 +59,7 @@ const props = defineProps<{
 	webhookId: string;
 }>();
 
-const webhook = await os.api('i/webhooks/show', {
+const webhook = await misskeyApi('i/webhooks/show', {
 	webhookId: props.webhookId,
 });
 
diff --git a/packages/frontend/src/pages/share.vue b/packages/frontend/src/pages/share.vue
index cb5acf3af..030cfbb90 100644
--- a/packages/frontend/src/pages/share.vue
+++ b/packages/frontend/src/pages/share.vue
@@ -37,6 +37,7 @@ import * as Misskey from 'misskey-js';
 import MkButton from '@/components/MkButton.vue';
 import MkPostForm from '@/components/MkPostForm.vue';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { definePageMetadata } from '@/scripts/page-metadata.js';
 import { postMessageToParentWindow } from '@/scripts/post-message.js';
 import { i18n } from '@/i18n.js';
@@ -76,7 +77,7 @@ async function init() {
 			]
 			// TypeScriptの指示通りに変換する
 				.map(q => 'username' in q ? { username: q.username, host: q.host === null ? undefined : q.host } : q)
-				.map(q => os.api('users/show', q)
+				.map(q => misskeyApi('users/show', q)
 					.then(user => {
 						visibleUsers.value.push(user);
 					}, () => {
@@ -91,11 +92,11 @@ async function init() {
 		const replyId = urlParams.get('replyId');
 		const replyUri = urlParams.get('replyUri');
 		if (replyId) {
-			reply.value = await os.api('notes/show', {
+			reply.value = await misskeyApi('notes/show', {
 				noteId: replyId,
 			});
 		} else if (replyUri) {
-			const obj = await os.api('ap/show', {
+			const obj = await misskeyApi('ap/show', {
 				uri: replyUri,
 			});
 			if (obj.type === 'Note') {
@@ -108,11 +109,11 @@ async function init() {
 		const renoteId = urlParams.get('renoteId');
 		const renoteUri = urlParams.get('renoteUri');
 		if (renoteId) {
-			renote.value = await os.api('notes/show', {
+			renote.value = await misskeyApi('notes/show', {
 				noteId: renoteId,
 			});
 		} else if (renoteUri) {
-			const obj = await os.api('ap/show', {
+			const obj = await misskeyApi('ap/show', {
 				uri: renoteUri,
 			});
 			if (obj.type === 'Note') {
@@ -126,7 +127,7 @@ async function init() {
 		if (fileIds) {
 			await Promise.all(
 				fileIds.split(',')
-					.map(fileId => os.api('drive/files/show', { fileId })
+					.map(fileId => misskeyApi('drive/files/show', { fileId })
 						.then(file => {
 							files.value.push(file);
 						}, () => {
diff --git a/packages/frontend/src/pages/signup-complete.vue b/packages/frontend/src/pages/signup-complete.vue
index 638c7e877..3f007b7af 100644
--- a/packages/frontend/src/pages/signup-complete.vue
+++ b/packages/frontend/src/pages/signup-complete.vue
@@ -31,6 +31,7 @@ import MkAnimBg from '@/components/MkAnimBg.vue';
 import { login } from '@/account.js';
 import { i18n } from '@/i18n.js';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 
 const submitting = ref(false);
 
@@ -42,7 +43,7 @@ function submit() {
 	if (submitting.value) return;
 	submitting.value = true;
 
-	os.api('signup-pending', {
+	misskeyApi('signup-pending', {
 		code: props.code,
 	}).then(res => {
 		return login(res.i, '/');
diff --git a/packages/frontend/src/pages/timeline.vue b/packages/frontend/src/pages/timeline.vue
index 1b24f98bd..6fe8963f5 100644
--- a/packages/frontend/src/pages/timeline.vue
+++ b/packages/frontend/src/pages/timeline.vue
@@ -40,6 +40,7 @@ import MkInfo from '@/components/MkInfo.vue';
 import MkPostForm from '@/components/MkPostForm.vue';
 import { scroll } from '@/scripts/scroll.js';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { defaultStore } from '@/store.js';
 import { i18n } from '@/i18n.js';
 import { instance } from '@/instance.js';
@@ -122,7 +123,7 @@ async function chooseAntenna(ev: MouseEvent): Promise<void> {
 }
 
 async function chooseChannel(ev: MouseEvent): Promise<void> {
-	const channels = await os.api('channels/my-favorites', {
+	const channels = await misskeyApi('channels/my-favorites', {
 		limit: 100,
 	});
 	const items: MenuItem[] = [
diff --git a/packages/frontend/src/pages/user-list-timeline.vue b/packages/frontend/src/pages/user-list-timeline.vue
index ba22d784c..19c376c77 100644
--- a/packages/frontend/src/pages/user-list-timeline.vue
+++ b/packages/frontend/src/pages/user-list-timeline.vue
@@ -28,7 +28,7 @@ import { computed, watch, ref, shallowRef } from 'vue';
 import * as Misskey from 'misskey-js';
 import MkTimeline from '@/components/MkTimeline.vue';
 import { scroll } from '@/scripts/scroll.js';
-import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { useRouter } from '@/router.js';
 import { definePageMetadata } from '@/scripts/page-metadata.js';
 import { i18n } from '@/i18n.js';
@@ -45,7 +45,7 @@ const tlEl = shallowRef<InstanceType<typeof MkTimeline>>();
 const rootEl = shallowRef<HTMLElement>();
 
 watch(() => props.listId, async () => {
-	list.value = await os.api('users/lists/show', {
+	list.value = await misskeyApi('users/lists/show', {
 		listId: props.listId,
 	});
 }, { immediate: true });
diff --git a/packages/frontend/src/pages/user/activity.following.vue b/packages/frontend/src/pages/user/activity.following.vue
index bd1159cb3..798b64064 100644
--- a/packages/frontend/src/pages/user/activity.following.vue
+++ b/packages/frontend/src/pages/user/activity.following.vue
@@ -18,7 +18,7 @@ import { onMounted, shallowRef, ref } from 'vue';
 import { Chart, ChartDataset } from 'chart.js';
 import * as Misskey from 'misskey-js';
 import gradient from 'chartjs-plugin-gradient';
-import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { defaultStore } from '@/store.js';
 import { useChartTooltip } from '@/scripts/use-chart-tooltip.js';
 import { chartVLine } from '@/scripts/chart-vline.js';
@@ -61,7 +61,7 @@ async function renderChart() {
 		}));
 	};
 
-	const raw = await os.api('charts/user/following', { userId: props.user.id, limit: chartLimit, span: 'day' });
+	const raw = await misskeyApi('charts/user/following', { userId: props.user.id, limit: chartLimit, span: 'day' });
 
 	const vLineColor = defaultStore.state.darkMode ? 'rgba(255, 255, 255, 0.2)' : 'rgba(0, 0, 0, 0.2)';
 
diff --git a/packages/frontend/src/pages/user/activity.heatmap.vue b/packages/frontend/src/pages/user/activity.heatmap.vue
index ff46db965..ea3276a89 100644
--- a/packages/frontend/src/pages/user/activity.heatmap.vue
+++ b/packages/frontend/src/pages/user/activity.heatmap.vue
@@ -16,7 +16,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 import { onMounted, nextTick, watch, shallowRef, ref } from 'vue';
 import { Chart } from 'chart.js';
 import * as Misskey from 'misskey-js';
-import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { defaultStore } from '@/store.js';
 import { useChartTooltip } from '@/scripts/use-chart-tooltip.js';
 import { alpha } from '@/scripts/color.js';
@@ -74,7 +74,7 @@ async function renderChart() {
 	let values;
 
 	if (props.src === 'notes') {
-		const raw = await os.api('charts/user/notes', { userId: props.user.id, limit: chartLimit, span: 'day' });
+		const raw = await misskeyApi('charts/user/notes', { userId: props.user.id, limit: chartLimit, span: 'day' });
 		values = raw.inc;
 	}
 
diff --git a/packages/frontend/src/pages/user/activity.notes.vue b/packages/frontend/src/pages/user/activity.notes.vue
index dd035641d..a55d98d98 100644
--- a/packages/frontend/src/pages/user/activity.notes.vue
+++ b/packages/frontend/src/pages/user/activity.notes.vue
@@ -18,7 +18,7 @@ import { onMounted, shallowRef, ref } from 'vue';
 import { Chart, ChartDataset } from 'chart.js';
 import * as Misskey from 'misskey-js';
 import gradient from 'chartjs-plugin-gradient';
-import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { defaultStore } from '@/store.js';
 import { useChartTooltip } from '@/scripts/use-chart-tooltip.js';
 import { chartVLine } from '@/scripts/chart-vline.js';
@@ -61,7 +61,7 @@ async function renderChart() {
 		}));
 	};
 
-	const raw = await os.api('charts/user/notes', { userId: props.user.id, limit: chartLimit, span: 'day' });
+	const raw = await misskeyApi('charts/user/notes', { userId: props.user.id, limit: chartLimit, span: 'day' });
 
 	const vLineColor = defaultStore.state.darkMode ? 'rgba(255, 255, 255, 0.2)' : 'rgba(0, 0, 0, 0.2)';
 
diff --git a/packages/frontend/src/pages/user/activity.pv.vue b/packages/frontend/src/pages/user/activity.pv.vue
index 2dd9a1570..fe9acd322 100644
--- a/packages/frontend/src/pages/user/activity.pv.vue
+++ b/packages/frontend/src/pages/user/activity.pv.vue
@@ -18,7 +18,7 @@ import { onMounted, shallowRef, ref } from 'vue';
 import { Chart, ChartDataset } from 'chart.js';
 import * as Misskey from 'misskey-js';
 import gradient from 'chartjs-plugin-gradient';
-import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { defaultStore } from '@/store.js';
 import { useChartTooltip } from '@/scripts/use-chart-tooltip.js';
 import { chartVLine } from '@/scripts/chart-vline.js';
@@ -61,7 +61,7 @@ async function renderChart() {
 		}));
 	};
 
-	const raw = await os.api('charts/user/pv', { userId: props.user.id, limit: chartLimit, span: 'day' });
+	const raw = await misskeyApi('charts/user/pv', { userId: props.user.id, limit: chartLimit, span: 'day' });
 
 	const vLineColor = defaultStore.state.darkMode ? 'rgba(255, 255, 255, 0.2)' : 'rgba(0, 0, 0, 0.2)';
 
diff --git a/packages/frontend/src/pages/user/followers.vue b/packages/frontend/src/pages/user/followers.vue
index a4d516a1d..23c7fc049 100644
--- a/packages/frontend/src/pages/user/followers.vue
+++ b/packages/frontend/src/pages/user/followers.vue
@@ -22,7 +22,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 import { computed, watch, ref } from 'vue';
 import * as Misskey from 'misskey-js';
 import XFollowList from './follow-list.vue';
-import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { definePageMetadata } from '@/scripts/page-metadata.js';
 import { i18n } from '@/i18n.js';
 
@@ -37,7 +37,7 @@ const error = ref<any>(null);
 function fetchUser(): void {
 	if (props.acct == null) return;
 	user.value = null;
-	os.api('users/show', Misskey.acct.parse(props.acct)).then(u => {
+	misskeyApi('users/show', Misskey.acct.parse(props.acct)).then(u => {
 		user.value = u;
 	}).catch(err => {
 		error.value = err;
diff --git a/packages/frontend/src/pages/user/following.vue b/packages/frontend/src/pages/user/following.vue
index 99cb098d6..d1dc93588 100644
--- a/packages/frontend/src/pages/user/following.vue
+++ b/packages/frontend/src/pages/user/following.vue
@@ -22,7 +22,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 import { computed, watch, ref } from 'vue';
 import * as Misskey from 'misskey-js';
 import XFollowList from './follow-list.vue';
-import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { definePageMetadata } from '@/scripts/page-metadata.js';
 import { i18n } from '@/i18n.js';
 
@@ -37,7 +37,7 @@ const error = ref<any>(null);
 function fetchUser(): void {
 	if (props.acct == null) return;
 	user.value = null;
-	os.api('users/show', Misskey.acct.parse(props.acct)).then(u => {
+	misskeyApi('users/show', Misskey.acct.parse(props.acct)).then(u => {
 		user.value = u;
 	}).catch(err => {
 		error.value = err;
diff --git a/packages/frontend/src/pages/user/home.vue b/packages/frontend/src/pages/user/home.vue
index 2a9eb5f8e..5258165d7 100644
--- a/packages/frontend/src/pages/user/home.vue
+++ b/packages/frontend/src/pages/user/home.vue
@@ -171,7 +171,7 @@ import { i18n } from '@/i18n.js';
 import { $i, iAmModerator } from '@/account.js';
 import { dateString } from '@/filters/date.js';
 import { confetti } from '@/scripts/confetti.js';
-import { api } from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { isFollowingVisibleForMe, isFollowersVisibleForMe } from '@/scripts/isFfVisibleForMe.js';
 
 function calcAge(birthdate: string): number {
@@ -215,7 +215,7 @@ const moderationNote = ref(props.user.moderationNote);
 const editModerationNote = ref(false);
 
 watch(moderationNote, async () => {
-	await os.api('admin/update-user-note', { userId: props.user.id, text: moderationNote.value });
+	await misskeyApi('admin/update-user-note', { userId: props.user.id, text: moderationNote.value });
 });
 
 const style = computed(() => {
@@ -266,7 +266,7 @@ function adjustMemoTextarea() {
 }
 
 async function updateMemo() {
-	await api('users/update-memo', {
+	await misskeyApi('users/update-memo', {
 		memo: memoDraft.value,
 		userId: props.user.id,
 	});
diff --git a/packages/frontend/src/pages/user/index.files.vue b/packages/frontend/src/pages/user/index.files.vue
index 32561e6b0..506d32468 100644
--- a/packages/frontend/src/pages/user/index.files.vue
+++ b/packages/frontend/src/pages/user/index.files.vue
@@ -37,7 +37,7 @@ import { onMounted, ref } from 'vue';
 import * as Misskey from 'misskey-js';
 import { getStaticImageUrl } from '@/scripts/media-proxy.js';
 import { notePage } from '@/filters/note.js';
-import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import MkContainer from '@/components/MkContainer.vue';
 import ImgWithBlurhash from '@/components/MkImgWithBlurhash.vue';
 import { defaultStore } from '@/store.js';
@@ -61,7 +61,7 @@ function thumbnail(image: Misskey.entities.DriveFile): string {
 }
 
 onMounted(() => {
-	os.api('users/notes', {
+	misskeyApi('users/notes', {
 		userId: props.user.id,
 		withFiles: true,
 		limit: 15,
diff --git a/packages/frontend/src/pages/user/index.vue b/packages/frontend/src/pages/user/index.vue
index 1e9a86097..95869e7b8 100644
--- a/packages/frontend/src/pages/user/index.vue
+++ b/packages/frontend/src/pages/user/index.vue
@@ -32,7 +32,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 import { defineAsyncComponent, computed, watch, ref } from 'vue';
 import * as Misskey from 'misskey-js';
 import { acct as getAcct } from '@/filters/user.js';
-import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { definePageMetadata } from '@/scripts/page-metadata.js';
 import { i18n } from '@/i18n.js';
 import { $i } from '@/account.js';
@@ -63,7 +63,7 @@ const error = ref<any>(null);
 function fetchUser(): void {
 	if (props.acct == null) return;
 	user.value = null;
-	os.api('users/show', Misskey.acct.parse(props.acct)).then(u => {
+	misskeyApi('users/show', Misskey.acct.parse(props.acct)).then(u => {
 		user.value = u;
 	}).catch(err => {
 		error.value = err;
diff --git a/packages/frontend/src/pages/welcome.entrance.a.vue b/packages/frontend/src/pages/welcome.entrance.a.vue
index 3ad34355f..2bb9746bd 100644
--- a/packages/frontend/src/pages/welcome.entrance.a.vue
+++ b/packages/frontend/src/pages/welcome.entrance.a.vue
@@ -39,7 +39,7 @@ import XTimeline from './welcome.timeline.vue';
 import MarqueeText from '@/components/MkMarquee.vue';
 import MkFeaturedPhotos from '@/components/MkFeaturedPhotos.vue';
 import misskeysvg from '/client-assets/misskey.svg';
-import * as os from '@/os.js';
+import { misskeyApi, misskeyApiGet } from '@/scripts/misskey-api.js';
 import MkVisitorDashboard from '@/components/MkVisitorDashboard.vue';
 import { getProxiedImageUrl } from '@/scripts/media-proxy.js';
 
@@ -53,11 +53,11 @@ function getInstanceIcon(instance: Misskey.entities.FederationInstance): string
 	return getProxiedImageUrl(instance.iconUrl, 'preview');
 }
 
-os.api('meta', { detail: true }).then(_meta => {
+misskeyApi('meta', { detail: true }).then(_meta => {
 	meta.value = _meta;
 });
 
-os.apiGet('federation/instances', {
+misskeyApiGet('federation/instances', {
 	sort: '+pubSub',
 	limit: 20,
 }).then(_instances => {
diff --git a/packages/frontend/src/pages/welcome.setup.vue b/packages/frontend/src/pages/welcome.setup.vue
index 61b86f993..40187b861 100644
--- a/packages/frontend/src/pages/welcome.setup.vue
+++ b/packages/frontend/src/pages/welcome.setup.vue
@@ -40,6 +40,7 @@ import MkButton from '@/components/MkButton.vue';
 import MkInput from '@/components/MkInput.vue';
 import { host, version } from '@/config.js';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { login } from '@/account.js';
 import { i18n } from '@/i18n.js';
 import MkAnimBg from '@/components/MkAnimBg.vue';
@@ -52,7 +53,7 @@ function submit() {
 	if (submitting.value) return;
 	submitting.value = true;
 
-	os.api('admin/accounts/create', {
+	misskeyApi('admin/accounts/create', {
 		username: username.value,
 		password: password.value,
 	}).then(res => {
diff --git a/packages/frontend/src/pages/welcome.timeline.vue b/packages/frontend/src/pages/welcome.timeline.vue
index 92be80228..07c98571e 100644
--- a/packages/frontend/src/pages/welcome.timeline.vue
+++ b/packages/frontend/src/pages/welcome.timeline.vue
@@ -32,14 +32,14 @@ import { onUpdated, ref, shallowRef } from 'vue';
 import MkReactionsViewer from '@/components/MkReactionsViewer.vue';
 import MkMediaList from '@/components/MkMediaList.vue';
 import MkPoll from '@/components/MkPoll.vue';
-import * as os from '@/os.js';
+import { misskeyApiGet } from '@/scripts/misskey-api.js';
 import { getScrollContainer } from '@/scripts/scroll.js';
 
 const notes = ref<Misskey.entities.Note[]>([]);
 const isScrolling = ref(false);
 const scrollEl = shallowRef<HTMLElement>();
 
-os.apiGet('notes/featured').then(_notes => {
+misskeyApiGet('notes/featured').then(_notes => {
 	notes.value = _notes;
 });
 
diff --git a/packages/frontend/src/pages/welcome.vue b/packages/frontend/src/pages/welcome.vue
index 7f0af1b83..225ab9151 100644
--- a/packages/frontend/src/pages/welcome.vue
+++ b/packages/frontend/src/pages/welcome.vue
@@ -16,12 +16,12 @@ import * as Misskey from 'misskey-js';
 import XSetup from './welcome.setup.vue';
 import XEntrance from './welcome.entrance.a.vue';
 import { instanceName } from '@/config.js';
-import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { definePageMetadata } from '@/scripts/page-metadata.js';
 
 const meta = ref<Misskey.entities.MetaResponse | null>(null);
 
-os.api('meta', { detail: true }).then(res => {
+misskeyApi('meta', { detail: true }).then(res => {
 	meta.value = res;
 });
 
diff --git a/packages/frontend/src/pizzax.ts b/packages/frontend/src/pizzax.ts
index d26899dbd..c6fa89ea5 100644
--- a/packages/frontend/src/pizzax.ts
+++ b/packages/frontend/src/pizzax.ts
@@ -8,7 +8,7 @@
 import { onUnmounted, Ref, ref, watch } from 'vue';
 import { BroadcastChannel } from 'broadcast-channel';
 import { $i } from '@/account.js';
-import { api } from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { get, set } from '@/scripts/idb-proxy.js';
 import { defaultStore } from '@/store.js';
 import { useStream } from '@/stream.js';
@@ -134,7 +134,7 @@ export class Storage<T extends StateDef> {
 				window.setTimeout(async () => {
 					await defaultStore.ready;
 
-					api('i/registry/get-all', { scope: ['client', this.key] })
+					misskeyApi('i/registry/get-all', { scope: ['client', this.key] })
 						.then(kvs => {
 							const cache: Partial<T> = {};
 							for (const [k, v] of Object.entries(this.def) as [keyof T, T[keyof T]['default']][]) {
@@ -199,7 +199,7 @@ export class Storage<T extends StateDef> {
 					const cache = await get(this.registryCacheKeyName) || {};
 					cache[key] = rawValue;
 					await set(this.registryCacheKeyName, cache);
-					await api('i/registry/set', {
+					await misskeyApi('i/registry/set', {
 						scope: ['client', this.key],
 						key: key.toString(),
 						value: rawValue,
diff --git a/packages/frontend/src/scripts/achievements.ts b/packages/frontend/src/scripts/achievements.ts
index e7585fcf8..4b6b044d8 100644
--- a/packages/frontend/src/scripts/achievements.ts
+++ b/packages/frontend/src/scripts/achievements.ts
@@ -3,7 +3,7 @@
  * SPDX-License-Identifier: AGPL-3.0-only
  */
 
-import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { $i } from '@/account.js';
 
 export const ACHIEVEMENT_TYPES = [
@@ -489,7 +489,7 @@ export async function claimAchievement(type: typeof ACHIEVEMENT_TYPES[number]) {
 	window.setTimeout(() => {
 		claimingQueue.delete(type);
 	}, 500);
-	os.api('i/claim-achievement', { name: type });
+	misskeyApi('i/claim-achievement', { name: type });
 }
 
 if (_DEV_) {
diff --git a/packages/frontend/src/scripts/aiscript/api.ts b/packages/frontend/src/scripts/aiscript/api.ts
index f6f63bb59..c13849cc8 100644
--- a/packages/frontend/src/scripts/aiscript/api.ts
+++ b/packages/frontend/src/scripts/aiscript/api.ts
@@ -5,6 +5,7 @@
 
 import { utils, values } from '@syuilo/aiscript';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { $i } from '@/account.js';
 import { miLocalStorage } from '@/local-storage.js';
 import { customEmojis } from '@/custom-emojis.js';
@@ -54,7 +55,7 @@ export function createAiScriptEnv(opts) {
 				if (typeof token.value !== 'string') throw new Error('invalid token');
 			}
 			const actualToken: string|null = token?.value ?? opts.token ?? null;
-			return os.api(ep.value, utils.valToJs(param), actualToken).then(res => {
+			return misskeyApi(ep.value, utils.valToJs(param), actualToken).then(res => {
 				return utils.jsToVal(res);
 			}, err => {
 				return values.ERROR('request_failed', utils.jsToVal(err));
diff --git a/packages/frontend/src/scripts/clicker-game.ts b/packages/frontend/src/scripts/clicker-game.ts
index 5ad076e5e..360bea903 100644
--- a/packages/frontend/src/scripts/clicker-game.ts
+++ b/packages/frontend/src/scripts/clicker-game.ts
@@ -4,7 +4,7 @@
  */
 
 import { ref, computed } from 'vue';
-import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 
 type SaveData = {
 	gameVersion: number;
@@ -23,7 +23,7 @@ let prev = '';
 
 export async function load() {
 	try {
-		saveData.value = await os.api('i/registry/get', {
+		saveData.value = await misskeyApi('i/registry/get', {
 			scope: ['clickerGame'],
 			key: 'saveData',
 		});
@@ -63,7 +63,7 @@ export async function save() {
 	const current = JSON.stringify(saveData.value);
 	if (current === prev) return;
 
-	await os.api('i/registry/set', {
+	await misskeyApi('i/registry/set', {
 		scope: ['clickerGame'],
 		key: 'saveData',
 		value: saveData.value,
diff --git a/packages/frontend/src/scripts/gen-search-query.ts b/packages/frontend/src/scripts/gen-search-query.ts
index 54654980f..068cd9cd9 100644
--- a/packages/frontend/src/scripts/gen-search-query.ts
+++ b/packages/frontend/src/scripts/gen-search-query.ts
@@ -18,7 +18,7 @@ export async function genSearchQuery(v: any, q: string) {
 					host = at;
 				}
 			} else {
-				const user = await v.os.api('users/show', Misskey.acct.parse(at)).catch(x => null);
+				const user = await v.api('users/show', Misskey.acct.parse(at)).catch(x => null);
 				if (user) {
 					userId = user.id;
 				} else {
diff --git a/packages/frontend/src/scripts/get-drive-file-menu.ts b/packages/frontend/src/scripts/get-drive-file-menu.ts
index f8496f071..59c46c2cb 100644
--- a/packages/frontend/src/scripts/get-drive-file-menu.ts
+++ b/packages/frontend/src/scripts/get-drive-file-menu.ts
@@ -8,6 +8,7 @@ import { defineAsyncComponent } from 'vue';
 import { i18n } from '@/i18n.js';
 import copyToClipboard from '@/scripts/copy-to-clipboard.js';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { MenuItem } from '@/types/menu.js';
 import { defaultStore } from '@/store.js';
 
@@ -18,7 +19,7 @@ function rename(file: Misskey.entities.DriveFile) {
 		default: file.name,
 	}).then(({ canceled, result: name }) => {
 		if (canceled) return;
-		os.api('drive/files/update', {
+		misskeyApi('drive/files/update', {
 			fileId: file.id,
 			name: name,
 		});
@@ -31,7 +32,7 @@ function describe(file: Misskey.entities.DriveFile) {
 		file: file,
 	}, {
 		done: caption => {
-			os.api('drive/files/update', {
+			misskeyApi('drive/files/update', {
 				fileId: file.id,
 				comment: caption.length === 0 ? null : caption,
 			});
@@ -40,7 +41,7 @@ function describe(file: Misskey.entities.DriveFile) {
 }
 
 function toggleSensitive(file: Misskey.entities.DriveFile) {
-	os.api('drive/files/update', {
+	misskeyApi('drive/files/update', {
 		fileId: file.id,
 		isSensitive: !file.isSensitive,
 	}).catch(err => {
@@ -69,7 +70,7 @@ async function deleteFile(file: Misskey.entities.DriveFile) {
 	});
 
 	if (canceled) return;
-	os.api('drive/files/delete', {
+	misskeyApi('drive/files/delete', {
 		fileId: file.id,
 	});
 }
diff --git a/packages/frontend/src/scripts/get-note-menu.ts b/packages/frontend/src/scripts/get-note-menu.ts
index b9224c559..110be244c 100644
--- a/packages/frontend/src/scripts/get-note-menu.ts
+++ b/packages/frontend/src/scripts/get-note-menu.ts
@@ -10,6 +10,7 @@ import { $i } from '@/account.js';
 import { i18n } from '@/i18n.js';
 import { instance } from '@/instance.js';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import copyToClipboard from '@/scripts/copy-to-clipboard.js';
 import { url } from '@/config.js';
 import { defaultStore, noteActions } from '@/store.js';
@@ -40,7 +41,7 @@ export async function getNoteClipMenu(props: {
 		action: () => {
 			claimAchievement('noteClipped1');
 			os.promiseDialog(
-				os.api('clips/add-note', { clipId: clip.id, noteId: appearNote.id }),
+				misskeyApi('clips/add-note', { clipId: clip.id, noteId: appearNote.id }),
 				null,
 				async (err) => {
 					if (err.id === '734806c4-542c-463a-9311-15c512803965') {
@@ -145,7 +146,7 @@ export function getNoteMenu(props: {
 		}).then(({ canceled }) => {
 			if (canceled) return;
 
-			os.api('notes/delete', {
+			misskeyApi('notes/delete', {
 				noteId: appearNote.id,
 			});
 
@@ -162,7 +163,7 @@ export function getNoteMenu(props: {
 		}).then(({ canceled }) => {
 			if (canceled) return;
 
-			os.api('notes/delete', {
+			misskeyApi('notes/delete', {
 				noteId: appearNote.id,
 			});
 
@@ -243,7 +244,7 @@ export function getNoteMenu(props: {
 	async function translate(): Promise<void> {
 		if (props.translation.value != null) return;
 		props.translating.value = true;
-		const res = await os.api('notes/translate', {
+		const res = await misskeyApi('notes/translate', {
 			noteId: appearNote.id,
 			targetLang: miLocalStorage.getItem('lang') ?? navigator.language,
 		});
@@ -253,7 +254,7 @@ export function getNoteMenu(props: {
 
 	let menu: MenuItem[];
 	if ($i) {
-		const statePromise = os.api('notes/state', {
+		const statePromise = misskeyApi('notes/state', {
 			noteId: appearNote.id,
 		});
 
@@ -330,7 +331,7 @@ export function getNoteMenu(props: {
 				icon: 'ti ti-user',
 				text: i18n.ts.user,
 				children: async () => {
-					const user = appearNote.userId === $i?.id ? $i : await os.api('users/show', { userId: appearNote.userId });
+					const user = appearNote.userId === $i?.id ? $i : await misskeyApi('users/show', { userId: appearNote.userId });
 					const { menu, cleanup } = getUserMenu(user);
 					cleanups.push(cleanup);
 					return menu;
@@ -361,7 +362,7 @@ export function getNoteMenu(props: {
 					children: async () => {
 						const channelChildMenu = [] as MenuItem[];
 
-						const channel = await os.api('channels/show', { channelId: appearNote.channel!.id });
+						const channel = await misskeyApi('channels/show', { channelId: appearNote.channel!.id });
 
 						if (channel.pinnedNoteIds.includes(appearNote.id)) {
 							channelChildMenu.push({
@@ -425,7 +426,7 @@ export function getNoteMenu(props: {
 	}
 
 	if (noteActions.length > 0) {
-		menu = menu.concat([{ type: "divider" }, ...noteActions.map(action => ({
+		menu = menu.concat([{ type: 'divider' }, ...noteActions.map(action => ({
 			icon: 'ti ti-plug',
 			text: action.title,
 			action: () => {
@@ -435,7 +436,7 @@ export function getNoteMenu(props: {
 	}
 
 	if (defaultStore.state.devMode) {
-		menu = menu.concat([{ type: "divider" }, {
+		menu = menu.concat([{ type: 'divider' }, {
 			icon: 'ti ti-id',
 			text: i18n.ts.copyNoteId,
 			action: () => {
@@ -499,7 +500,7 @@ export function getRenoteMenu(props: {
 				}
 
 				if (!props.mock) {
-					os.api('notes/create', {
+					misskeyApi('notes/create', {
 						renoteId: appearNote.id,
 						channelId: appearNote.channelId,
 					}).then(() => {
@@ -544,7 +545,7 @@ export function getRenoteMenu(props: {
 				}
 
 				if (!props.mock) {
-					os.api('notes/create', {
+					misskeyApi('notes/create', {
 						localOnly,
 						visibility,
 						renoteId: appearNote.id,
diff --git a/packages/frontend/src/scripts/get-user-menu.ts b/packages/frontend/src/scripts/get-user-menu.ts
index 6e5c689d9..2735253b3 100644
--- a/packages/frontend/src/scripts/get-user-menu.ts
+++ b/packages/frontend/src/scripts/get-user-menu.ts
@@ -10,6 +10,7 @@ import { i18n } from '@/i18n.js';
 import copyToClipboard from '@/scripts/copy-to-clipboard.js';
 import { host, url } from '@/config.js';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { defaultStore, userActions } from '@/store.js';
 import { $i, iAmModerator } from '@/account.js';
 import { mainRouter } from '@/router.js';
@@ -131,7 +132,7 @@ export function getUserMenu(user: Misskey.entities.UserDetailed, router: Router
 	}
 
 	async function editMemo(): Promise<void> {
-		const userDetailed = await os.api('users/show', {
+		const userDetailed = await misskeyApi('users/show', {
 			userId: user.id,
 		});
 		const { canceled, result } = await os.form(i18n.ts.editMemo, {
diff --git a/packages/frontend/src/scripts/install-plugin.ts b/packages/frontend/src/scripts/install-plugin.ts
index 1310a0dc7..ee218df01 100644
--- a/packages/frontend/src/scripts/install-plugin.ts
+++ b/packages/frontend/src/scripts/install-plugin.ts
@@ -10,6 +10,7 @@ import { Interpreter, Parser, utils } from '@syuilo/aiscript';
 import type { Plugin } from '@/store.js';
 import { ColdDeviceStorage } from '@/store.js';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { i18n } from '@/i18n.js';
 
 export type AiScriptPluginMeta = {
@@ -110,7 +111,7 @@ export async function installPlugin(code: string, meta?: AiScriptPluginMeta) {
 		}, {
 			done: async result => {
 				const { name, permissions } = result;
-				const { token } = await os.api('miauth/gen-token', {
+				const { token } = await misskeyApi('miauth/gen-token', {
 					session: null,
 					name: name,
 					permission: permissions,
diff --git a/packages/frontend/src/scripts/lookup-user.ts b/packages/frontend/src/scripts/lookup-user.ts
index a35fe898e..9ae5eccb7 100644
--- a/packages/frontend/src/scripts/lookup-user.ts
+++ b/packages/frontend/src/scripts/lookup-user.ts
@@ -6,6 +6,7 @@
 import * as Misskey from 'misskey-js';
 import { i18n } from '@/i18n.js';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 
 export async function lookupUser() {
 	const { canceled, result } = await os.inputText({
@@ -17,8 +18,8 @@ export async function lookupUser() {
 		os.pageWindow(`/admin/user/${user.id}`);
 	};
 
-	const usernamePromise = os.api('users/show', Misskey.acct.parse(result));
-	const idPromise = os.api('users/show', { userId: result });
+	const usernamePromise = misskeyApi('users/show', Misskey.acct.parse(result));
+	const idPromise = misskeyApi('users/show', { userId: result });
 	let _notFound = false;
 	const notFound = () => {
 		if (_notFound) {
diff --git a/packages/frontend/src/scripts/lookup.ts b/packages/frontend/src/scripts/lookup.ts
index 979f40f03..ff438af24 100644
--- a/packages/frontend/src/scripts/lookup.ts
+++ b/packages/frontend/src/scripts/lookup.ts
@@ -4,6 +4,7 @@
  */
 
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { i18n } from '@/i18n.js';
 import { mainRouter } from '@/router.js';
 import { Router } from '@/nirax.js';
@@ -28,7 +29,7 @@ export async function lookup(router?: Router) {
 	}
 
 	if (query.startsWith('https://')) {
-		const promise = os.api('ap/show', {
+		const promise = misskeyApi('ap/show', {
 			uri: query,
 		});
 
diff --git a/packages/frontend/src/scripts/api.ts b/packages/frontend/src/scripts/misskey-api.ts
similarity index 91%
rename from packages/frontend/src/scripts/api.ts
rename to packages/frontend/src/scripts/misskey-api.ts
index 8f3a16393..e71c5dd59 100644
--- a/packages/frontend/src/scripts/api.ts
+++ b/packages/frontend/src/scripts/misskey-api.ts
@@ -10,7 +10,7 @@ import { $i } from '@/account.js';
 export const pendingApiRequestsCount = ref(0);
 
 // Implements Misskey.api.ApiClient.request
-export function api<E extends keyof Misskey.Endpoints, P extends Misskey.Endpoints[E]['req']>(
+export function misskeyApi<E extends keyof Misskey.Endpoints, P extends Misskey.Endpoints[E]['req']>(
 	endpoint: E,
 	data: P = {} as any,
 	token?: string | null | undefined,
@@ -57,7 +57,7 @@ export function api<E extends keyof Misskey.Endpoints, P extends Misskey.Endpoin
 }
 
 // Implements Misskey.api.ApiClient.request
-export function apiGet<E extends keyof Misskey.Endpoints, P extends Misskey.Endpoints[E]['req']>(
+export function misskeyApiGet<E extends keyof Misskey.Endpoints, P extends Misskey.Endpoints[E]['req']>(
 	endpoint: E,
 	data: P = {} as any,
 ): Promise<Misskey.api.SwitchCaseResponseType<E, P>> {
diff --git a/packages/frontend/src/scripts/select-file.ts b/packages/frontend/src/scripts/select-file.ts
index 53e2cd5b1..f6977eb1f 100644
--- a/packages/frontend/src/scripts/select-file.ts
+++ b/packages/frontend/src/scripts/select-file.ts
@@ -6,6 +6,7 @@
 import { ref } from 'vue';
 import * as Misskey from 'misskey-js';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { useStream } from '@/stream.js';
 import { i18n } from '@/i18n.js';
 import { defaultStore } from '@/store.js';
@@ -65,7 +66,7 @@ export function chooseFileFromUrl(): Promise<Misskey.entities.DriveFile> {
 				}
 			});
 
-			os.api('drive/files/upload-from-url', {
+			misskeyApi('drive/files/upload-from-url', {
 				url: url,
 				folderId: defaultStore.state.uploadFolder,
 				marker,
diff --git a/packages/frontend/src/scripts/sound.ts b/packages/frontend/src/scripts/sound.ts
index 2f7545ef0..0b966ff19 100644
--- a/packages/frontend/src/scripts/sound.ts
+++ b/packages/frontend/src/scripts/sound.ts
@@ -5,7 +5,7 @@
 
 import type { SoundStore } from '@/store.js';
 import { defaultStore } from '@/store.js';
-import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 
 let ctx: AudioContext;
 const cache = new Map<string, AudioBuffer>();
@@ -120,7 +120,7 @@ export async function loadAudio(soundStore: SoundStore, options?: { useCache?: b
 		} catch (err) {
 			try {
 				// URLが変わっている可能性があるのでドライブ側からURLを取得するフォールバック
-				const apiRes = await os.api('drive/files/show', {
+				const apiRes = await misskeyApi('drive/files/show', {
 					fileId: soundStore.fileId,
 				});
 				response = await fetch(apiRes.url);
diff --git a/packages/frontend/src/theme-store.ts b/packages/frontend/src/theme-store.ts
index f37c01cca..f96059b84 100644
--- a/packages/frontend/src/theme-store.ts
+++ b/packages/frontend/src/theme-store.ts
@@ -5,7 +5,7 @@
 
 import { Theme, getBuiltinThemes } from '@/scripts/theme.js';
 import { miLocalStorage } from '@/local-storage.js';
-import { api } from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { $i } from '@/account.js';
 
 const lsCacheKey = $i ? `themes:${$i.id}` as const : null;
@@ -19,7 +19,7 @@ export async function fetchThemes(): Promise<void> {
 	if ($i == null) return;
 
 	try {
-		const themes = await api('i/registry/get', { scope: ['client'], key: 'themes' });
+		const themes = await misskeyApi('i/registry/get', { scope: ['client'], key: 'themes' });
 		miLocalStorage.setItem(lsCacheKey!, JSON.stringify(themes));
 	} catch (err) {
 		if (err.code === 'NO_SUCH_KEY') return;
@@ -35,13 +35,13 @@ export async function addTheme(theme: Theme): Promise<void> {
 	}
 	await fetchThemes();
 	const themes = getThemes().concat(theme);
-	await api('i/registry/set', { scope: ['client'], key: 'themes', value: themes });
+	await misskeyApi('i/registry/set', { scope: ['client'], key: 'themes', value: themes });
 	miLocalStorage.setItem(lsCacheKey!, JSON.stringify(themes));
 }
 
 export async function removeTheme(theme: Theme): Promise<void> {
 	if ($i == null) return;
 	const themes = getThemes().filter(t => t.id !== theme.id);
-	await api('i/registry/set', { scope: ['client'], key: 'themes', value: themes });
+	await misskeyApi('i/registry/set', { scope: ['client'], key: 'themes', value: themes });
 	miLocalStorage.setItem(lsCacheKey!, JSON.stringify(themes));
 }
diff --git a/packages/frontend/src/ui/_common_/common.vue b/packages/frontend/src/ui/_common_/common.vue
index 6ece7d86d..78af49cdc 100644
--- a/packages/frontend/src/ui/_common_/common.vue
+++ b/packages/frontend/src/ui/_common_/common.vue
@@ -49,7 +49,8 @@ import { defineAsyncComponent, ref } from 'vue';
 import * as Misskey from 'misskey-js';
 import { swInject } from './sw-inject.js';
 import XNotification from './notification.vue';
-import { popups, pendingApiRequestsCount } from '@/os.js';
+import { popups } from '@/os.js';
+import { pendingApiRequestsCount } from '@/scripts/misskey-api.js';
 import { uploads } from '@/scripts/upload.js';
 import * as sound from '@/scripts/sound.js';
 import { $i } from '@/account.js';
diff --git a/packages/frontend/src/ui/_common_/statusbar-federation.vue b/packages/frontend/src/ui/_common_/statusbar-federation.vue
index c92695afe..8df3b289d 100644
--- a/packages/frontend/src/ui/_common_/statusbar-federation.vue
+++ b/packages/frontend/src/ui/_common_/statusbar-federation.vue
@@ -34,7 +34,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 import { ref } from 'vue';
 import * as Misskey from 'misskey-js';
 import MarqueeText from '@/components/MkMarquee.vue';
-import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { useInterval } from '@/scripts/use-interval.js';
 import { getProxiedImageUrlNullable } from '@/scripts/media-proxy.js';
 
@@ -52,7 +52,7 @@ const fetching = ref(true);
 const key = ref(0);
 
 const tick = () => {
-	os.api('federation/instances', {
+	misskeyApi('federation/instances', {
 		sort: '+latestRequestReceivedAt',
 		limit: 30,
 	}).then(res => {
diff --git a/packages/frontend/src/ui/_common_/statusbar-user-list.vue b/packages/frontend/src/ui/_common_/statusbar-user-list.vue
index 6057174ba..34d7b0e4e 100644
--- a/packages/frontend/src/ui/_common_/statusbar-user-list.vue
+++ b/packages/frontend/src/ui/_common_/statusbar-user-list.vue
@@ -34,7 +34,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 import { ref, watch } from 'vue';
 import * as Misskey from 'misskey-js';
 import MarqueeText from '@/components/MkMarquee.vue';
-import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { useInterval } from '@/scripts/use-interval.js';
 import { getNoteSummary } from '@/scripts/get-note-summary.js';
 import { notePage } from '@/filters/note.js';
@@ -54,7 +54,7 @@ const key = ref(0);
 
 const tick = () => {
 	if (props.userListId == null) return;
-	os.api('notes/user-list-timeline', {
+	misskeyApi('notes/user-list-timeline', {
 		listId: props.userListId,
 	}).then(res => {
 		notes.value = res;
diff --git a/packages/frontend/src/ui/_common_/sw-inject.ts b/packages/frontend/src/ui/_common_/sw-inject.ts
index 5239b7670..504484f8d 100644
--- a/packages/frontend/src/ui/_common_/sw-inject.ts
+++ b/packages/frontend/src/ui/_common_/sw-inject.ts
@@ -3,7 +3,8 @@
  * SPDX-License-Identifier: AGPL-3.0-only
  */
 
-import { api, post } from '@/os.js';
+import { post } from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { $i, login } from '@/account.js';
 import { getAccountFromId } from '@/scripts/get-account-from-id.js';
 import { mainRouter } from '@/router.js';
@@ -30,10 +31,10 @@ export function swInject() {
 				// プッシュ通知から来たreply,renoteはtruncateBodyが通されているため、
 				// 完全なノートを取得しなおす
 				if (props.reply) {
-					props.reply = await api('notes/show', { noteId: props.reply.id });
+					props.reply = await misskeyApi('notes/show', { noteId: props.reply.id });
 				}
 				if (props.renote) {
-					props.renote = await api('notes/show', { noteId: props.renote.id });
+					props.renote = await misskeyApi('notes/show', { noteId: props.renote.id });
 				}
 				return post(props);
 			}
diff --git a/packages/frontend/src/ui/deck/antenna-column.vue b/packages/frontend/src/ui/deck/antenna-column.vue
index fe4d2a809..ded24cdd2 100644
--- a/packages/frontend/src/ui/deck/antenna-column.vue
+++ b/packages/frontend/src/ui/deck/antenna-column.vue
@@ -19,6 +19,7 @@ import XColumn from './column.vue';
 import { updateColumn, Column } from './deck-store.js';
 import MkTimeline from '@/components/MkTimeline.vue';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { i18n } from '@/i18n.js';
 
 const props = defineProps<{
@@ -35,7 +36,7 @@ onMounted(() => {
 });
 
 async function setAntenna() {
-	const antennas = await os.api('antennas/list');
+	const antennas = await misskeyApi('antennas/list');
 	const { canceled, result: antenna } = await os.select({
 		title: i18n.ts.selectAntenna,
 		items: antennas.map(x => ({
diff --git a/packages/frontend/src/ui/deck/channel-column.vue b/packages/frontend/src/ui/deck/channel-column.vue
index de5d94b4f..ccb440edf 100644
--- a/packages/frontend/src/ui/deck/channel-column.vue
+++ b/packages/frontend/src/ui/deck/channel-column.vue
@@ -26,6 +26,7 @@ import { updateColumn, Column } from './deck-store.js';
 import MkTimeline from '@/components/MkTimeline.vue';
 import MkButton from '@/components/MkButton.vue';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { i18n } from '@/i18n.js';
 
 const props = defineProps<{
@@ -41,7 +42,7 @@ if (props.column.channelId == null) {
 }
 
 async function setChannel() {
-	const channels = await os.api('channels/my-favorites', {
+	const channels = await misskeyApi('channels/my-favorites', {
 		limit: 100,
 	});
 	const { canceled, result: channel } = await os.select({
@@ -60,7 +61,7 @@ async function setChannel() {
 
 async function post() {
 	if (!channel.value || channel.value.id !== props.column.channelId) {
-		channel.value = await os.api('channels/show', {
+		channel.value = await misskeyApi('channels/show', {
 			channelId: props.column.channelId,
 		});
 	}
diff --git a/packages/frontend/src/ui/deck/deck-store.ts b/packages/frontend/src/ui/deck/deck-store.ts
index 49fdf4d31..3a23cbdb4 100644
--- a/packages/frontend/src/ui/deck/deck-store.ts
+++ b/packages/frontend/src/ui/deck/deck-store.ts
@@ -7,7 +7,7 @@ import { throttle } from 'throttle-debounce';
 import { markRaw } from 'vue';
 import { notificationTypes } from 'misskey-js';
 import { Storage } from '@/pizzax.js';
-import { api } from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { deepClone } from '@/scripts/clone.js';
 
 type ColumnWidget = {
@@ -70,7 +70,7 @@ export const loadDeck = async () => {
 	let deck;
 
 	try {
-		deck = await api('i/registry/get', {
+		deck = await misskeyApi('i/registry/get', {
 			scope: ['client', 'deck', 'profiles'],
 			key: deckStore.state.profile,
 		});
@@ -95,7 +95,7 @@ export const loadDeck = async () => {
 
 // TODO: deckがloadされていない状態でsaveすると意図せず上書きが発生するので対策する
 export const saveDeck = throttle(1000, () => {
-	api('i/registry/set', {
+	misskeyApi('i/registry/set', {
 		scope: ['client', 'deck', 'profiles'],
 		key: deckStore.state.profile,
 		value: {
@@ -106,13 +106,13 @@ export const saveDeck = throttle(1000, () => {
 });
 
 export async function getProfiles(): Promise<string[]> {
-	return await api('i/registry/keys', {
+	return await misskeyApi('i/registry/keys', {
 		scope: ['client', 'deck', 'profiles'],
 	});
 }
 
 export async function deleteProfile(key: string): Promise<void> {
-	return await api('i/registry/remove', {
+	return await misskeyApi('i/registry/remove', {
 		scope: ['client', 'deck', 'profiles'],
 		key: key,
 	});
diff --git a/packages/frontend/src/ui/deck/list-column.vue b/packages/frontend/src/ui/deck/list-column.vue
index 7166561c7..84508ca78 100644
--- a/packages/frontend/src/ui/deck/list-column.vue
+++ b/packages/frontend/src/ui/deck/list-column.vue
@@ -19,6 +19,7 @@ import XColumn from './column.vue';
 import { updateColumn, Column } from './deck-store.js';
 import MkTimeline from '@/components/MkTimeline.vue';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { i18n } from '@/i18n.js';
 
 const props = defineProps<{
@@ -40,7 +41,7 @@ watch(withRenotes, v => {
 });
 
 async function setList() {
-	const lists = await os.api('users/lists/list');
+	const lists = await misskeyApi('users/lists/list');
 	const { canceled, result: list } = await os.select({
 		title: i18n.ts.selectList,
 		items: lists.map(x => ({
diff --git a/packages/frontend/src/ui/deck/role-timeline-column.vue b/packages/frontend/src/ui/deck/role-timeline-column.vue
index d9bcf8d95..5ab5a9379 100644
--- a/packages/frontend/src/ui/deck/role-timeline-column.vue
+++ b/packages/frontend/src/ui/deck/role-timeline-column.vue
@@ -19,6 +19,7 @@ import XColumn from './column.vue';
 import { updateColumn, Column } from './deck-store.js';
 import MkTimeline from '@/components/MkTimeline.vue';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { i18n } from '@/i18n.js';
 
 const props = defineProps<{
@@ -35,7 +36,7 @@ onMounted(() => {
 });
 
 async function setRole() {
-	const roles = (await os.api('roles/list')).filter(x => x.isExplorable);
+	const roles = (await misskeyApi('roles/list')).filter(x => x.isExplorable);
 	const { canceled, result: role } = await os.select({
 		title: i18n.ts.role,
 		items: roles.map(x => ({
diff --git a/packages/frontend/src/ui/visitor.vue b/packages/frontend/src/ui/visitor.vue
index 1fb77e42d..5af6bc30a 100644
--- a/packages/frontend/src/ui/visitor.vue
+++ b/packages/frontend/src/ui/visitor.vue
@@ -74,6 +74,7 @@ import * as Misskey from 'misskey-js';
 import XCommon from './_common_/common.vue';
 import { instanceName } from '@/config.js';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { instance } from '@/instance.js';
 import XSigninDialog from '@/components/MkSigninDialog.vue';
 import XSignupDialog from '@/components/MkSignupDialog.vue';
@@ -121,7 +122,7 @@ const keymap = computed(() => {
 
 const root = computed(() => mainRouter.currentRoute.value.name === 'index');
 
-os.api('meta', { detail: true }).then(res => {
+misskeyApi('meta', { detail: true }).then(res => {
 	meta.value = res;
 });
 
diff --git a/packages/frontend/src/widgets/WidgetActivity.vue b/packages/frontend/src/widgets/WidgetActivity.vue
index 775998692..56364839b 100644
--- a/packages/frontend/src/widgets/WidgetActivity.vue
+++ b/packages/frontend/src/widgets/WidgetActivity.vue
@@ -25,7 +25,7 @@ import { useWidgetPropsManager, WidgetComponentEmits, WidgetComponentExpose, Wid
 import XCalendar from './WidgetActivity.calendar.vue';
 import XChart from './WidgetActivity.chart.vue';
 import { GetFormResultType } from '@/scripts/form.js';
-import * as os from '@/os.js';
+import { misskeyApiGet } from '@/scripts/misskey-api.js';
 import MkContainer from '@/components/MkContainer.vue';
 import { $i } from '@/account.js';
 import { i18n } from '@/i18n.js';
@@ -76,7 +76,7 @@ const toggleView = () => {
 	save();
 };
 
-os.apiGet('charts/user/notes', {
+misskeyApiGet('charts/user/notes', {
 	userId: $i.id,
 	span: 'day',
 	limit: 7 * 21,
diff --git a/packages/frontend/src/widgets/WidgetBirthdayFollowings.vue b/packages/frontend/src/widgets/WidgetBirthdayFollowings.vue
index 7c4455516..9af139af6 100644
--- a/packages/frontend/src/widgets/WidgetBirthdayFollowings.vue
+++ b/packages/frontend/src/widgets/WidgetBirthdayFollowings.vue
@@ -27,7 +27,7 @@ import * as Misskey from 'misskey-js';
 import { useWidgetPropsManager, WidgetComponentEmits, WidgetComponentExpose, WidgetComponentProps } from './widget.js';
 import { GetFormResultType } from '@/scripts/form.js';
 import MkContainer from '@/components/MkContainer.vue';
-import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { useInterval } from '@/scripts/use-interval.js';
 import { i18n } from '@/i18n.js';
 import { infoImageUrl } from '@/instance.js';
@@ -70,7 +70,7 @@ const fetch = () => {
 	now.setHours(0, 0, 0, 0);
 
 	if (now > lfAtD) {
-		os.api('users/following', {
+		misskeyApi('users/following', {
 			limit: 18,
 			birthday: now.toISOString(),
 			userId: $i.id,
diff --git a/packages/frontend/src/widgets/WidgetFederation.vue b/packages/frontend/src/widgets/WidgetFederation.vue
index cc3ad8ff7..bdc82a299 100644
--- a/packages/frontend/src/widgets/WidgetFederation.vue
+++ b/packages/frontend/src/widgets/WidgetFederation.vue
@@ -31,7 +31,7 @@ import { useWidgetPropsManager, WidgetComponentEmits, WidgetComponentExpose, Wid
 import { GetFormResultType } from '@/scripts/form.js';
 import MkContainer from '@/components/MkContainer.vue';
 import MkMiniChart from '@/components/MkMiniChart.vue';
-import * as os from '@/os.js';
+import { misskeyApi, misskeyApiGet } from '@/scripts/misskey-api.js';
 import { useInterval } from '@/scripts/use-interval.js';
 import { i18n } from '@/i18n.js';
 import { getProxiedImageUrlNullable } from '@/scripts/media-proxy.js';
@@ -62,11 +62,11 @@ const charts = ref<Misskey.entities.ChartsInstanceResponse[]>([]);
 const fetching = ref(true);
 
 const fetch = async () => {
-	const fetchedInstances = await os.api('federation/instances', {
+	const fetchedInstances = await misskeyApi('federation/instances', {
 		sort: '+latestRequestReceivedAt',
 		limit: 5,
 	});
-	const fetchedCharts = await Promise.all(fetchedInstances.map(i => os.apiGet('charts/instance', { host: i.host, limit: 16, span: 'hour' })));
+	const fetchedCharts = await Promise.all(fetchedInstances.map(i => misskeyApiGet('charts/instance', { host: i.host, limit: 16, span: 'hour' })));
 	instances.value = fetchedInstances;
 	charts.value = fetchedCharts;
 	fetching.value = false;
diff --git a/packages/frontend/src/widgets/WidgetInstanceCloud.vue b/packages/frontend/src/widgets/WidgetInstanceCloud.vue
index 38323ed04..800cf71de 100644
--- a/packages/frontend/src/widgets/WidgetInstanceCloud.vue
+++ b/packages/frontend/src/widgets/WidgetInstanceCloud.vue
@@ -25,6 +25,7 @@ import { GetFormResultType } from '@/scripts/form.js';
 import MkContainer from '@/components/MkContainer.vue';
 import MkTagCloud from '@/components/MkTagCloud.vue';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { useInterval } from '@/scripts/use-interval.js';
 import { getProxiedImageUrlNullable } from '@/scripts/media-proxy.js';
 
@@ -56,7 +57,7 @@ function onInstanceClick(i) {
 }
 
 useInterval(() => {
-	os.api('federation/instances', {
+	misskeyApi('federation/instances', {
 		sort: '+latestRequestReceivedAt',
 		limit: 25,
 	}).then(res => {
diff --git a/packages/frontend/src/widgets/WidgetOnlineUsers.vue b/packages/frontend/src/widgets/WidgetOnlineUsers.vue
index 0a6fec7f2..e544a39d5 100644
--- a/packages/frontend/src/widgets/WidgetOnlineUsers.vue
+++ b/packages/frontend/src/widgets/WidgetOnlineUsers.vue
@@ -17,7 +17,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 import { ref } from 'vue';
 import { useWidgetPropsManager, WidgetComponentEmits, WidgetComponentExpose, WidgetComponentProps } from './widget.js';
 import { GetFormResultType } from '@/scripts/form.js';
-import * as os from '@/os.js';
+import { misskeyApi, misskeyApiGet } from '@/scripts/misskey-api.js';
 import { useInterval } from '@/scripts/use-interval.js';
 import { i18n } from '@/i18n.js';
 import number from '@/filters/number.js';
@@ -45,7 +45,7 @@ const { widgetProps, configure } = useWidgetPropsManager(name,
 const onlineUsersCount = ref(0);
 
 const tick = () => {
-	os.apiGet('get-online-users-count').then(res => {
+	misskeyApiGet('get-online-users-count').then(res => {
 		onlineUsersCount.value = res.count;
 	});
 };
diff --git a/packages/frontend/src/widgets/WidgetPhotos.vue b/packages/frontend/src/widgets/WidgetPhotos.vue
index 257753ef1..253c2b981 100644
--- a/packages/frontend/src/widgets/WidgetPhotos.vue
+++ b/packages/frontend/src/widgets/WidgetPhotos.vue
@@ -28,7 +28,7 @@ import { useWidgetPropsManager, WidgetComponentEmits, WidgetComponentExpose, Wid
 import { GetFormResultType } from '@/scripts/form.js';
 import { useStream } from '@/stream.js';
 import { getStaticImageUrl } from '@/scripts/media-proxy.js';
-import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import MkContainer from '@/components/MkContainer.vue';
 import { defaultStore } from '@/store.js';
 import { i18n } from '@/i18n.js';
@@ -74,7 +74,7 @@ const thumbnail = (image: any): string => {
 		: image.thumbnailUrl;
 };
 
-os.api('drive/stream', {
+misskeyApi('drive/stream', {
 	type: 'image/*',
 	limit: 9,
 }).then(res => {
diff --git a/packages/frontend/src/widgets/WidgetSlideshow.vue b/packages/frontend/src/widgets/WidgetSlideshow.vue
index 7e39a0588..94bf6d7ee 100644
--- a/packages/frontend/src/widgets/WidgetSlideshow.vue
+++ b/packages/frontend/src/widgets/WidgetSlideshow.vue
@@ -22,6 +22,7 @@ import * as Misskey from 'misskey-js';
 import { useWidgetPropsManager, WidgetComponentEmits, WidgetComponentExpose, WidgetComponentProps } from './widget.js';
 import { GetFormResultType } from '@/scripts/form.js';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { useInterval } from '@/scripts/use-interval.js';
 import { i18n } from '@/i18n.js';
 
@@ -77,7 +78,7 @@ const change = () => {
 const fetch = () => {
 	fetching.value = true;
 
-	os.api('drive/files', {
+	misskeyApi('drive/files', {
 		folderId: widgetProps.folderId,
 		type: 'image/*',
 		limit: 100,
diff --git a/packages/frontend/src/widgets/WidgetTimeline.vue b/packages/frontend/src/widgets/WidgetTimeline.vue
index 4a7b06f1d..8f46bc020 100644
--- a/packages/frontend/src/widgets/WidgetTimeline.vue
+++ b/packages/frontend/src/widgets/WidgetTimeline.vue
@@ -38,6 +38,7 @@ import { ref } from 'vue';
 import { useWidgetPropsManager, WidgetComponentEmits, WidgetComponentExpose, WidgetComponentProps } from './widget.js';
 import { GetFormResultType } from '@/scripts/form.js';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import MkContainer from '@/components/MkContainer.vue';
 import MkTimeline from '@/components/MkTimeline.vue';
 import { i18n } from '@/i18n.js';
@@ -95,8 +96,8 @@ const setSrc = (src) => {
 const choose = async (ev) => {
 	menuOpened.value = true;
 	const [antennas, lists] = await Promise.all([
-		os.api('antennas/list'),
-		os.api('users/lists/list'),
+		misskeyApi('antennas/list'),
+		misskeyApi('users/lists/list'),
 	]);
 	const antennaItems = antennas.map(antenna => ({
 		text: antenna.name,
diff --git a/packages/frontend/src/widgets/WidgetTrends.vue b/packages/frontend/src/widgets/WidgetTrends.vue
index ede7cb6f3..35925a908 100644
--- a/packages/frontend/src/widgets/WidgetTrends.vue
+++ b/packages/frontend/src/widgets/WidgetTrends.vue
@@ -30,7 +30,7 @@ import { useWidgetPropsManager, WidgetComponentEmits, WidgetComponentExpose, Wid
 import { GetFormResultType } from '@/scripts/form.js';
 import MkContainer from '@/components/MkContainer.vue';
 import MkMiniChart from '@/components/MkMiniChart.vue';
-import * as os from '@/os.js';
+import { misskeyApiGet } from '@/scripts/misskey-api.js';
 import { useInterval } from '@/scripts/use-interval.js';
 import { i18n } from '@/i18n.js';
 import { defaultStore } from '@/store.js';
@@ -59,7 +59,7 @@ const stats = ref<Misskey.entities.HashtagsTrendResponse>([]);
 const fetching = ref(true);
 
 const fetch = () => {
-	os.apiGet('hashtags/trend').then(res => {
+	misskeyApiGet('hashtags/trend').then(res => {
 		stats.value = res;
 		fetching.value = false;
 	});
diff --git a/packages/frontend/src/widgets/WidgetUserList.vue b/packages/frontend/src/widgets/WidgetUserList.vue
index e17b2cba9..af13e5898 100644
--- a/packages/frontend/src/widgets/WidgetUserList.vue
+++ b/packages/frontend/src/widgets/WidgetUserList.vue
@@ -30,6 +30,7 @@ import { useWidgetPropsManager, WidgetComponentEmits, WidgetComponentExpose, Wid
 import { GetFormResultType } from '@/scripts/form.js';
 import MkContainer from '@/components/MkContainer.vue';
 import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
 import { useInterval } from '@/scripts/use-interval.js';
 import { i18n } from '@/i18n.js';
 import MkButton from '@/components/MkButton.vue';
@@ -64,7 +65,7 @@ const users = ref<Misskey.entities.UserDetailed[]>([]);
 const fetching = ref(true);
 
 async function chooseList() {
-	const lists = await os.api('users/lists/list');
+	const lists = await misskeyApi('users/lists/list');
 	const { canceled, result: list } = await os.select({
 		title: i18n.ts.selectList,
 		items: lists.map(x => ({
@@ -85,11 +86,11 @@ const fetch = () => {
 		return;
 	}
 
-	os.api('users/lists/show', {
+	misskeyApi('users/lists/show', {
 		listId: widgetProps.listId,
 	}).then(_list => {
 		list.value = _list;
-		os.api('users/show', {
+		misskeyApi('users/show', {
 			userIds: list.value.userIds,
 		}).then(_users => {
 			users.value = _users;
diff --git a/packages/frontend/src/widgets/server-metric/index.vue b/packages/frontend/src/widgets/server-metric/index.vue
index b4a418265..f5e80b0d2 100644
--- a/packages/frontend/src/widgets/server-metric/index.vue
+++ b/packages/frontend/src/widgets/server-metric/index.vue
@@ -30,7 +30,7 @@ import XMemory from './mem.vue';
 import XDisk from './disk.vue';
 import MkContainer from '@/components/MkContainer.vue';
 import { GetFormResultType } from '@/scripts/form.js';
-import * as os from '@/os.js';
+import { misskeyApiGet } from '@/scripts/misskey-api.js';
 import { useStream } from '@/stream.js';
 import { i18n } from '@/i18n.js';
 
@@ -68,7 +68,7 @@ const { widgetProps, configure, save } = useWidgetPropsManager(name,
 
 const meta = ref<Misskey.entities.ServerInfoResponse | null>(null);
 
-os.apiGet('server-info', {}).then(res => {
+misskeyApiGet('server-info', {}).then(res => {
 	meta.value = res;
 });