diff --git a/locales/ja-JP.yml b/locales/ja-JP.yml
index 4e764bc635..29a4c2d3d6 100644
--- a/locales/ja-JP.yml
+++ b/locales/ja-JP.yml
@@ -476,6 +476,9 @@ state: "状態"
 sort: "ソート"
 ascendingOrder: "昇順"
 descendingOrder: "降順"
+scratchpad: "スクラッチパッド"
+scratchpadDescription: "スクラッチパッドは、AiScriptの実験環境を提供します。Misskeyと対話するコードの記述、実行、結果の確認ができます。"
+output: "出力"
 
 _theme:
   explore: "テーマを探す"
diff --git a/package.json b/package.json
index 0214f8f3a9..2c9e570b15 100644
--- a/package.json
+++ b/package.json
@@ -42,7 +42,7 @@
 		"@koa/cors": "3.0.0",
 		"@koa/multer": "2.0.2",
 		"@koa/router": "8.0.8",
-		"@syuilo/aiscript": "0.0.0",
+		"@syuilo/aiscript": "0.0.2",
 		"@types/bcryptjs": "2.4.2",
 		"@types/bull": "3.12.1",
 		"@types/cbor": "5.0.0",
@@ -250,6 +250,7 @@
 		"vue-marquee-text-component": "1.1.1",
 		"vue-meta": "2.3.3",
 		"vue-prism-component": "1.1.1",
+		"vue-prism-editor": "0.5.1",
 		"vue-router": "3.1.6",
 		"vue-style-loader": "4.1.2",
 		"vue-svg-inline-loader": "1.5.0",
diff --git a/src/client/app.vue b/src/client/app.vue
index 5523e1e758..f3f99fe282 100644
--- a/src/client/app.vue
+++ b/src/client/app.vue
@@ -156,7 +156,7 @@
 
 <script lang="ts">
 import Vue from 'vue';
-import { faGripVertical, faChevronLeft, faHashtag, faBroadcastTower, faFireAlt, faEllipsisH, faPencilAlt, faBars, faTimes, faSearch, faUserCog, faCog, faUser, faHome, faStar, faCircle, faAt, faListUl, faPlus, faUserClock, faUsers, faTachometerAlt, faExchangeAlt, faGlobe, faChartBar, faCloud, faGamepad, faServer, faFileAlt, faSatellite, faInfoCircle, faQuestionCircle } from '@fortawesome/free-solid-svg-icons';
+import { faTerminal, faGripVertical, faChevronLeft, faHashtag, faBroadcastTower, faFireAlt, faEllipsisH, faPencilAlt, faBars, faTimes, faSearch, faUserCog, faCog, faUser, faHome, faStar, faCircle, faAt, faListUl, faPlus, faUserClock, faUsers, faTachometerAlt, faExchangeAlt, faGlobe, faChartBar, faCloud, faGamepad, faServer, faFileAlt, faSatellite, faInfoCircle, faQuestionCircle } from '@fortawesome/free-solid-svg-icons';
 import { faBell, faEnvelope, faLaugh, faComments } from '@fortawesome/free-regular-svg-icons';
 import { ResizeObserver } from '@juggle/resize-observer';
 import { v4 as uuid } from 'uuid';
@@ -470,6 +470,11 @@ export default Vue.extend({
 					to: '/games',
 					icon: faGamepad,
 				}, null] : []), {
+					type: 'link',
+					text: this.$t('scratchpad'),
+					to: '/scratchpad',
+					icon: faTerminal,
+				}, null, {
 					type: 'link',
 					text: this.$t('help'),
 					to: '/docs',
diff --git a/src/client/pages/scratchpad.vue b/src/client/pages/scratchpad.vue
new file mode 100644
index 0000000000..2178e35b9b
--- /dev/null
+++ b/src/client/pages/scratchpad.vue
@@ -0,0 +1,154 @@
+<template>
+<div class="">
+	<portal to="icon"><fa :icon="faTerminal"/></portal>
+	<portal to="title">{{ $t('scratchpad') }}</portal>
+
+	<div class="_panel">
+		<prism-editor v-model="code" :line-numbers="false" language="js"/>
+		<mk-button style="position: absolute; top: 8px; right: 8px;" @click="run()" primary><fa :icon="faPlay"/></mk-button>
+	</div>
+
+	<mk-container :body-togglable="true">
+		<template #header><fa fixed-width/>{{ $t('output') }}</template>
+		<div class="bepmlvbi">
+			<div v-for="log in logs" class="log" :key="log.id" :class="{ print: log.print }">{{ log.text }}</div>
+		</div>
+	</mk-container>
+
+	<section class="_card" style="margin-top: var(--margin);">
+		<div class="_content">{{ $t('scratchpadDescription') }}</div>
+	</section>
+</div>
+</template>
+
+<script lang="ts">
+import Vue from 'vue';
+import "prismjs";
+import "prismjs/themes/prism.css";
+import { faTerminal, faPlay } from '@fortawesome/free-solid-svg-icons';
+import PrismEditor from 'vue-prism-editor';
+import { AiScript, parse, utils, values } from '@syuilo/aiscript';
+import i18n from '../i18n';
+import MkContainer from '../components/ui/container.vue';
+import MkButton from '../components/ui/button.vue';
+
+export default Vue.extend({
+	i18n,
+
+	metaInfo() {
+		return {
+			title: this.$t('scratchpad') as string
+		};
+	},
+
+	components: {
+		MkContainer,
+		MkButton,
+		PrismEditor,
+	},
+
+	data() {
+		return {
+			code: '',
+			logs: [],
+			faTerminal, faPlay
+		}
+	},
+
+	watch: {
+		code() {
+			localStorage.setItem('scratchpad', this.code);
+		}
+	},
+
+	created() {
+		const saved = localStorage.getItem('scratchpad');
+		if (saved) {
+			this.code = saved;
+		}
+	},
+
+	methods: {
+		async run() {
+			this.logs = [];
+			const aiscript = new AiScript({
+				dialog: values.FN_NATIVE(async ([title, text, type]) => {
+					await this.$root.dialog({
+						type: type ? type.value : 'info',
+						title: title.value,
+						text: text.value,
+					});
+				}),
+				confirm: values.FN_NATIVE(async ([title, text]) => {
+					const confirm = await this.$root.dialog({
+						type: 'warning',
+						showCancelButton: true,
+						title: title.value,
+						text: text.value,
+					});
+					return confirm.canceled ? values.FALSE : values.TRUE
+				}),
+			}, {
+				in: (q) => {
+					return new Promise(ok => {
+						this.$root.dialog({
+							title: q,
+							input: {}
+						}).then(({ canceled, result: a }) => {
+							ok(a);
+						});
+					});
+				},
+				out: (value) => {
+					this.logs.push({
+						id: Math.random(),
+						text: value.type === 'str' ? value.value : utils.valToString(value),
+						print: true
+					});
+				},
+				log: (type, params) => {
+					switch (type) {
+						case 'end': this.logs.push({
+							id: Math.random(),
+							text: utils.valToString(params.val, true),
+							print: false
+						}); break;
+						default: break;
+					}
+				}
+			});
+
+			let ast;
+			try {
+				ast = parse(this.code);
+			} catch (e) {
+				this.$root.dialog({
+					type: 'error',
+					text: 'Syntax error :('
+				});
+				return;
+			}
+			try {
+				await aiscript.exec(ast);
+			} catch (e) {
+				this.$root.dialog({
+					type: 'error',
+					text: e
+				});
+			}
+		}
+	}
+});
+</script>
+
+<style lang="scss" scoped>
+.bepmlvbi {
+	padding: 16px;
+
+	> .log {
+		&:not(.print) {
+			opacity: 0.7;
+		}
+	}
+}
+</style>
diff --git a/src/client/router.ts b/src/client/router.ts
index 9644ede55f..428be7ecca 100644
--- a/src/client/router.ts
+++ b/src/client/router.ts
@@ -48,6 +48,7 @@ export const router = new VueRouter({
 		{ path: '/my/antennas', component: page('my-antennas/index') },
 		{ path: '/my/apps', component: page('apps') },
 		{ path: '/preferences', component: page('preferences/index') },
+		{ path: '/scratchpad', component: page('scratchpad') },
 		{ path: '/instance', component: page('instance/index') },
 		{ path: '/instance/emojis', component: page('instance/emojis') },
 		{ path: '/instance/users', component: page('instance/users') },
diff --git a/src/client/scripts/hotkey.ts b/src/client/scripts/hotkey.ts
index 7d1bb16e79..5f73aa58b9 100644
--- a/src/client/scripts/hotkey.ts
+++ b/src/client/scripts/hotkey.ts
@@ -80,6 +80,7 @@ export default {
 				el._keyHandler = (e: KeyboardEvent) => {
 					const targetReservedKeys = document.activeElement ? ((document.activeElement as any)._misskey_reservedKeys || []) : [];
 					if (document.activeElement && ignoreElemens.some(el => document.activeElement.matches(el))) return;
+					if (document.activeElement && document.activeElement.attributes['contenteditable']) return;
 
 					for (const action of actions) {
 						const matched = match(e, action.patterns);