diff --git a/src/server/api/endpoints/admin/get-table-stats.ts b/src/server/api/endpoints/admin/get-table-stats.ts
index 5717110b25..f850d18380 100644
--- a/src/server/api/endpoints/admin/get-table-stats.ts
+++ b/src/server/api/endpoints/admin/get-table-stats.ts
@@ -9,7 +9,7 @@ export const meta = {
 		'en-US': 'Get table stats'
 	},
 
-	tags: ['meta'],
+	tags: ['admin'],
 
 	params: {
 	},
diff --git a/src/server/api/endpoints/admin/promo/create.ts b/src/server/api/endpoints/admin/promo/create.ts
index 953a18af0b..e3c03d2f4b 100644
--- a/src/server/api/endpoints/admin/promo/create.ts
+++ b/src/server/api/endpoints/admin/promo/create.ts
@@ -6,6 +6,8 @@ import { getNote } from '../../../common/getters';
 import { PromoNotes } from '../../../../../models';
 
 export const meta = {
+	tags: ['admin'],
+
 	requireCredential: true as const,
 	requireModerator: true,
 
diff --git a/src/server/api/endpoints/admin/server-info.ts b/src/server/api/endpoints/admin/server-info.ts
index 1804b9ac70..abed71cc14 100644
--- a/src/server/api/endpoints/admin/server-info.ts
+++ b/src/server/api/endpoints/admin/server-info.ts
@@ -11,7 +11,7 @@ export const meta = {
 	desc: {
 	},
 
-	tags: ['meta'],
+	tags: ['admin', 'meta'],
 
 	params: {
 	},
diff --git a/src/server/api/endpoints/announcements.ts b/src/server/api/endpoints/announcements.ts
index 35c70a7546..ca46192de2 100644
--- a/src/server/api/endpoints/announcements.ts
+++ b/src/server/api/endpoints/announcements.ts
@@ -5,6 +5,8 @@ import { Announcements, AnnouncementReads } from '../../../models';
 import { makePaginationQuery } from '../common/make-pagination-query';
 
 export const meta = {
+	tags: ['meta'],
+
 	requireCredential: false as const,
 
 	params: {
diff --git a/src/server/api/endpoints/antennas/notes.ts b/src/server/api/endpoints/antennas/notes.ts
index b8428f86a8..54af6c7d3f 100644
--- a/src/server/api/endpoints/antennas/notes.ts
+++ b/src/server/api/endpoints/antennas/notes.ts
@@ -8,7 +8,7 @@ import { generateMuteQuery } from '../../common/generate-mute-query';
 import { ApiError } from '../../error';
 
 export const meta = {
-	tags: ['account', 'notes', 'antennas'],
+	tags: ['antennas', 'account', 'notes'],
 
 	requireCredential: true as const,
 
diff --git a/src/server/api/endpoints/blocking/create.ts b/src/server/api/endpoints/blocking/create.ts
index 8d1cc9f3bf..f5b50dd5a5 100644
--- a/src/server/api/endpoints/blocking/create.ts
+++ b/src/server/api/endpoints/blocking/create.ts
@@ -13,7 +13,7 @@ export const meta = {
 		'en-US': 'Block a user.'
 	},
 
-	tags: ['blocking', 'users'],
+	tags: ['account'],
 
 	limit: {
 		duration: ms('1hour'),
diff --git a/src/server/api/endpoints/blocking/delete.ts b/src/server/api/endpoints/blocking/delete.ts
index 007f40bc58..895fe5d50c 100644
--- a/src/server/api/endpoints/blocking/delete.ts
+++ b/src/server/api/endpoints/blocking/delete.ts
@@ -13,7 +13,7 @@ export const meta = {
 		'en-US': 'Unblock a user.'
 	},
 
-	tags: ['blocking', 'users'],
+	tags: ['account'],
 
 	limit: {
 		duration: ms('1hour'),
diff --git a/src/server/api/endpoints/blocking/list.ts b/src/server/api/endpoints/blocking/list.ts
index 5342e11088..a9bb1c5f96 100644
--- a/src/server/api/endpoints/blocking/list.ts
+++ b/src/server/api/endpoints/blocking/list.ts
@@ -10,7 +10,7 @@ export const meta = {
 		'en-US': 'Get blocking users.'
 	},
 
-	tags: ['blocking', 'account'],
+	tags: ['account'],
 
 	requireCredential: true as const,
 
diff --git a/src/server/api/endpoints/federation/followers.ts b/src/server/api/endpoints/federation/followers.ts
index c3ab8c29aa..a5c564b0a8 100644
--- a/src/server/api/endpoints/federation/followers.ts
+++ b/src/server/api/endpoints/federation/followers.ts
@@ -5,7 +5,7 @@ import { Followings } from '../../../../models';
 import { makePaginationQuery } from '../../common/make-pagination-query';
 
 export const meta = {
-	tags: ['users'],
+	tags: ['federation'],
 
 	requireCredential: false as const,
 
diff --git a/src/server/api/endpoints/federation/following.ts b/src/server/api/endpoints/federation/following.ts
index dea5c83274..80820f5a26 100644
--- a/src/server/api/endpoints/federation/following.ts
+++ b/src/server/api/endpoints/federation/following.ts
@@ -5,7 +5,7 @@ import { Followings } from '../../../../models';
 import { makePaginationQuery } from '../../common/make-pagination-query';
 
 export const meta = {
-	tags: ['users'],
+	tags: ['federation'],
 
 	requireCredential: false as const,
 
diff --git a/src/server/api/endpoints/federation/users.ts b/src/server/api/endpoints/federation/users.ts
index 82db4f9f84..1bd053ae85 100644
--- a/src/server/api/endpoints/federation/users.ts
+++ b/src/server/api/endpoints/federation/users.ts
@@ -5,7 +5,7 @@ import { Users } from '../../../../models';
 import { makePaginationQuery } from '../../common/make-pagination-query';
 
 export const meta = {
-	tags: ['users'],
+	tags: ['federation'],
 
 	requireCredential: false as const,
 
diff --git a/src/server/api/endpoints/mute/create.ts b/src/server/api/endpoints/mute/create.ts
index 6ad82420e2..437ad96107 100644
--- a/src/server/api/endpoints/mute/create.ts
+++ b/src/server/api/endpoints/mute/create.ts
@@ -13,7 +13,7 @@ export const meta = {
 		'en-US': 'Mute a user'
 	},
 
-	tags: ['mute', 'users'],
+	tags: ['account'],
 
 	requireCredential: true as const,
 
diff --git a/src/server/api/endpoints/mute/delete.ts b/src/server/api/endpoints/mute/delete.ts
index 059b7989fd..217352acb4 100644
--- a/src/server/api/endpoints/mute/delete.ts
+++ b/src/server/api/endpoints/mute/delete.ts
@@ -11,7 +11,7 @@ export const meta = {
 		'en-US': 'Unmute a user'
 	},
 
-	tags: ['mute', 'users'],
+	tags: ['account'],
 
 	requireCredential: true as const,
 
diff --git a/src/server/api/endpoints/mute/list.ts b/src/server/api/endpoints/mute/list.ts
index 25bf96aa2d..1a8fc92159 100644
--- a/src/server/api/endpoints/mute/list.ts
+++ b/src/server/api/endpoints/mute/list.ts
@@ -10,7 +10,7 @@ export const meta = {
 		'en-US': 'Get muted users.'
 	},
 
-	tags: ['mute', 'account'],
+	tags: ['account'],
 
 	requireCredential: true as const,
 
diff --git a/src/server/api/endpoints/room/update.ts b/src/server/api/endpoints/room/update.ts
index c2955f625b..3022b96b1d 100644
--- a/src/server/api/endpoints/room/update.ts
+++ b/src/server/api/endpoints/room/update.ts
@@ -4,6 +4,8 @@ import define from '../../define';
 import { Users, UserProfiles } from '../../../../models';
 
 export const meta = {
+	tags: ['room'],
+
 	requireCredential: true as const,
 
 	params: {
diff --git a/src/server/api/openapi/gen-spec.ts b/src/server/api/openapi/gen-spec.ts
index de26b970ea..78e4810376 100644
--- a/src/server/api/openapi/gen-spec.ts
+++ b/src/server/api/openapi/gen-spec.ts
@@ -123,7 +123,7 @@ export function genOpenapiSpec(lang = 'ja-JP') {
 				url: `https://github.com/syuilo/misskey/blob/develop/src/server/api/endpoints/${endpoint.name}.ts`
 			},
 			...(endpoint.meta.tags ? {
-				tags: endpoint.meta.tags
+				tags: [endpoint.meta.tags[0]]
 			} : {}),
 			...(endpoint.meta.requireCredential ? {
 				security: [{