diff --git a/locales/index.d.ts b/locales/index.d.ts
index b9c2125ae6..dbfff95d15 100644
--- a/locales/index.d.ts
+++ b/locales/index.d.ts
@@ -1223,9 +1223,9 @@ export interface Locale extends ILocale {
      */
     "noMoreHistory": string;
     /**
-     * チャットを開始
+     * チャットを始める
      */
-    "startMessaging": string;
+    "startChat": string;
     /**
      * {n}人が読みました
      */
@@ -5350,6 +5350,10 @@ export interface Locale extends ILocale {
      * 文字数
      */
     "textCount": string;
+    /**
+     * チャット
+     */
+    "chat": string;
     "_emojiPalette": {
         /**
          * パレット
diff --git a/locales/ja-JP.yml b/locales/ja-JP.yml
index d60425566e..699798b552 100644
--- a/locales/ja-JP.yml
+++ b/locales/ja-JP.yml
@@ -301,7 +301,7 @@ uploadFromUrlMayTakeTime: "アップロードが完了するまで時間がか
 explore: "みつける"
 messageRead: "既読"
 noMoreHistory: "これより過去の履歴はありません"
-startMessaging: "チャットを開始"
+startChat: "チャットを始める"
 nUsersRead: "{n}人が読みました"
 agreeTo: "{0}に同意"
 agree: "同意する"
@@ -1333,6 +1333,7 @@ paste: "ペースト"
 emojiPalette: "絵文字パレット"
 postForm: "投稿フォーム"
 textCount: "文字数"
+chat: "チャット"
 
 _emojiPalette:
   palettes: "パレット"
diff --git a/packages/backend/src/core/ChatService.ts b/packages/backend/src/core/ChatService.ts
index adea867a48..1a552e7ac4 100644
--- a/packages/backend/src/core/ChatService.ts
+++ b/packages/backend/src/core/ChatService.ts
@@ -16,7 +16,7 @@ import { ChatMessageEntityService } from '@/core/entities/ChatMessageEntityServi
 import { ApRendererService } from '@/core/activitypub/ApRendererService.js';
 import { PushNotificationService } from '@/core/PushNotificationService.js';
 import { bindThis } from '@/decorators.js';
-import type { ChatMessagesRepository, MiChatMessage, MiDriveFile, MiUser, UsersRepository } from '@/models/_.js';
+import type { ChatMessagesRepository, MiChatMessage, MiDriveFile, MiUser, MutingsRepository, UsersRepository } from '@/models/_.js';
 import { UserBlockingService } from '@/core/UserBlockingService.js';
 import { QueryService } from '@/core/QueryService.js';
 
@@ -35,6 +35,9 @@ export class ChatService {
 		@Inject(DI.chatMessagesRepository)
 		private chatMessagesRepository: ChatMessagesRepository,
 
+		@Inject(DI.mutingsRepository)
+		private mutingsRepository: MutingsRepository,
+
 		private userEntityService: UserEntityService,
 		private chatMessageEntityService: ChatMessageEntityService,
 		private idService: IdService,
@@ -278,4 +281,82 @@ export class ChatService {
 
 		return messages;
 	}
+
+	@bindThis
+	public async userHistory(meId: MiUser['id'], limit: number) {
+		const history: MiChatMessage[] = [];
+
+		const mutingQuery = this.mutingsRepository.createQueryBuilder('muting')
+			.select('muting.muteeId')
+			.where('muting.muterId = :muterId', { muterId: meId });
+
+		for (let i = 0; i < limit; i++) {
+			const found = history.map(m => (m.fromUserId === meId) ? m.toUserId! : m.fromUserId!);
+
+			const query = this.chatMessagesRepository.createQueryBuilder('message')
+				.orderBy('message.id', 'DESC')
+				.where(new Brackets(qb => {
+					qb
+						.where('message.fromUserId = :meId', { meId: meId })
+						.orWhere('message.toUserId = :meId', { meId: meId });
+				}))
+				.andWhere('message.groupId IS NULL')
+				.andWhere(`message.fromUserId NOT IN (${ mutingQuery.getQuery() })`)
+				.andWhere(`message.toUserId NOT IN (${ mutingQuery.getQuery() })`);
+
+			if (found.length > 0) {
+				query.andWhere('message.fromUserId NOT IN (:...found)', { found: found });
+				query.andWhere('message.toUserId NOT IN (:...found)', { found: found });
+			}
+
+			query.setParameters(mutingQuery.getParameters());
+
+			const message = await query.getOne();
+
+			if (message) {
+				history.push(message);
+			} else {
+				break;
+			}
+		}
+
+		return history;
+	}
+
+	@bindThis
+	public async groupHistory(meId: MiUser['id'], limit: number) {
+		/*
+		const groups = await this.userGroupJoiningsRepository.findBy({
+			userId: meId,
+		}).then(xs => xs.map(x => x.userGroupId));
+
+		if (groups.length === 0) {
+			return [];
+		}
+
+		const history: MiChatMessage[] = [];
+
+		for (let i = 0; i < limit; i++) {
+			const found = history.map(m => m.groupId!);
+
+			const query = this.chatMessagesRepository.createQueryBuilder('message')
+				.orderBy('message.id', 'DESC')
+				.where('message.groupId IN (:...groups)', { groups: groups });
+
+			if (found.length > 0) {
+				query.andWhere('message.groupId NOT IN (:...found)', { found: found });
+			}
+
+			const message = await query.getOne();
+
+			if (message) {
+				history.push(message);
+			} else {
+				break;
+			}
+		}
+
+		return history;
+		*/
+	}
 }
diff --git a/packages/backend/src/server/api/endpoint-list.ts b/packages/backend/src/server/api/endpoint-list.ts
index 25d8cbf8df..4d99bcc50c 100644
--- a/packages/backend/src/server/api/endpoint-list.ts
+++ b/packages/backend/src/server/api/endpoint-list.ts
@@ -399,4 +399,5 @@ export * as 'users/show' from './endpoints/users/show.js';
 export * as 'users/update-memo' from './endpoints/users/update-memo.js';
 export * as 'chat/messages/create' from './endpoints/chat/messages/create.js';
 export * as 'chat/messages/timeline' from './endpoints/chat/messages/timeline.js';
+export * as 'chat/messages/history' from './endpoints/chat/messages/history.js';
 export * as 'v2/admin/emoji/list' from './endpoints/v2/admin/emoji/list.js';
diff --git a/packages/backend/src/server/api/endpoints/chat/messages/history.ts b/packages/backend/src/server/api/endpoints/chat/messages/history.ts
new file mode 100644
index 0000000000..23434c32cd
--- /dev/null
+++ b/packages/backend/src/server/api/endpoints/chat/messages/history.ts
@@ -0,0 +1,54 @@
+/*
+ * SPDX-FileCopyrightText: syuilo and misskey-project
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+import { Inject, Injectable } from '@nestjs/common';
+import { Endpoint } from '@/server/api/endpoint-base.js';
+import { DI } from '@/di-symbols.js';
+import { ChatService } from '@/core/ChatService.js';
+import { ChatMessageEntityService } from '@/core/entities/ChatMessageEntityService.js';
+import { ApiError } from '@/server/api/error.js';
+
+export const meta = {
+	tags: ['chat'],
+
+	requireCredential: true,
+
+	kind: 'read:chat',
+
+	res: {
+		type: 'array',
+		optional: false, nullable: false,
+		items: {
+			type: 'object',
+			optional: false, nullable: false,
+			ref: 'ChatMessage',
+		},
+	},
+
+	errors: {
+	},
+} as const;
+
+export const paramDef = {
+	type: 'object',
+	properties: {
+		limit: { type: 'integer', minimum: 1, maximum: 100, default: 10 },
+		group: { type: 'boolean', default: false },
+	},
+} as const;
+
+@Injectable()
+export default class extends Endpoint<typeof meta, typeof paramDef> { // eslint-disable-line import/no-default-export
+	constructor(
+		private chatMessageEntityService: ChatMessageEntityService,
+		private chatService: ChatService,
+	) {
+		super(meta, paramDef, async (ps, me) => {
+			const history = ps.group ? await this.chatService.groupHistory(me.id, ps.limit) : await this.chatService.userHistory(me.id, ps.limit);
+
+			return await this.chatMessageEntityService.packMany(history, me);
+		});
+	}
+}
diff --git a/packages/backend/src/server/api/stream/channels/chat.ts b/packages/backend/src/server/api/stream/channels/chat.ts
index de453323e1..3701927275 100644
--- a/packages/backend/src/server/api/stream/channels/chat.ts
+++ b/packages/backend/src/server/api/stream/channels/chat.ts
@@ -28,7 +28,7 @@ class ChatChannel extends Channel {
 		if (typeof params.otherId !== 'string') return;
 		this.otherId = params.otherId;
 
-		this.subscriber.on(`chatStream:${this.user.id}-${this.otherId}`, this.onEvent);
+		this.subscriber.on(`chatStream:${this.user!.id}-${this.otherId}`, this.onEvent);
 	}
 
 	@bindThis
@@ -39,7 +39,7 @@ class ChatChannel extends Channel {
 	@bindThis
 	public dispose() {
 		// Unsubscribe events
-		this.subscriber.off(`chatStream:${this.user.id}-${this.otherId}`, this.onEvent);
+		this.subscriber.off(`chatStream:${this.user!.id}-${this.otherId}`, this.onEvent);
 	}
 }
 
diff --git a/packages/frontend/src/pages/chat/home.vue b/packages/frontend/src/pages/chat/home.vue
new file mode 100644
index 0000000000..5424057501
--- /dev/null
+++ b/packages/frontend/src/pages/chat/home.vue
@@ -0,0 +1,85 @@
+<!--
+SPDX-FileCopyrightText: syuilo and misskey-project
+SPDX-License-Identifier: AGPL-3.0-only
+-->
+
+<template>
+<MkStickyContainer>
+	<template #header><MkPageHeader :actions="headerActions" :tabs="headerTabs"/></template>
+	<MkSpacer :contentMax="800">
+		<div class="_gaps">
+			<MkButton primary :class="$style.start" @click="start"><i class="ti ti-plus"></i> {{ i18n.ts.startChat }}</MkButton>
+
+			<div v-if="messages.length > 0" :class="$style.history">
+				<MkA
+					v-for="(message, i) in messages"
+					:key="message.id"
+					:class="[$style.message, { [$style.isMe]: message.isMe, [$style.isRead]: message.isRead }]"
+					class="_panel"
+					:to="message.groupId ? `/chat/group/${message.groupId}` : `/chat/user/${message.otherId}`"
+				>
+					<div>
+						<MkAvatar :class="$style.avatar" :user="message.user" indicator link preview/>
+						<header v-if="message.groupId">
+							<span class="name">{{ message.group.name }}</span>
+							<MkTime :time="message.createdAt" class="time"/>
+						</header>
+						<header v-else>
+							<span class="name"><MkUserName :user="message.other"/></span>
+							<span class="username">@{{ acct(message.other) }}</span>
+							<MkTime :time="message.createdAt" class="time"/>
+						</header>
+						<div class="body">
+							<p class="text"><span v-if="message.isMe" :class="$style.iSaid">{{ i18n.ts.you }}:</span>{{ message.text }}</p>
+						</div>
+					</div>
+				</MkA>
+			</div>
+			<div v-if="!fetching && messages.length == 0" class="_fullinfo">
+				<img src="https://xn--931a.moe/assets/info.jpg" class="_ghost"/>
+				<div>{{ $ts.noHistory }}</div>
+			</div>
+			<MkLoading v-if="fetching"/>
+		</div>
+	</MkSpacer>
+</MkStickyContainer>
+</template>
+
+<script lang="ts" setup>
+import { computed } from 'vue';
+import MkButton from '@/components/MkButton.vue';
+import { i18n } from '@/i18n.js';
+import { definePage } from '@/page.js';
+import { infoImageUrl } from '@/instance.js';
+
+const headerActions = computed(() => []);
+
+const headerTabs = computed(() => []);
+
+definePage(() => ({
+	title: i18n.ts.chat,
+	icon: 'ti ti-message',
+}));
+</script>
+
+<style lang="scss" module>
+.add {
+	margin: 0 auto 16px auto;
+}
+
+.antenna {
+	display: block;
+	padding: 16px;
+	border: solid 1px var(--MI_THEME-divider);
+	border-radius: 6px;
+
+	&:hover {
+		border: solid 1px var(--MI_THEME-accent);
+		text-decoration: none;
+	}
+}
+
+.name {
+	font-weight: bold;
+}
+</style>
diff --git a/packages/misskey-js/etc/misskey-js.api.md b/packages/misskey-js/etc/misskey-js.api.md
index 6060812b53..eafec84952 100644
--- a/packages/misskey-js/etc/misskey-js.api.md
+++ b/packages/misskey-js/etc/misskey-js.api.md
@@ -951,6 +951,30 @@ type ChartsUsersRequest = operations['charts___users']['requestBody']['content']
 // @public (undocumented)
 type ChartsUsersResponse = operations['charts___users']['responses']['200']['content']['application/json'];
 
+// @public (undocumented)
+type ChatMessage = components['schemas']['ChatMessage'];
+
+// @public (undocumented)
+type ChatMessageLite = components['schemas']['ChatMessageLite'];
+
+// @public (undocumented)
+type ChatMessagesCreateRequest = operations['chat___messages___create']['requestBody']['content']['application/json'];
+
+// @public (undocumented)
+type ChatMessagesCreateResponse = operations['chat___messages___create']['responses']['200']['content']['application/json'];
+
+// @public (undocumented)
+type ChatMessagesHistoryRequest = operations['chat___messages___history']['requestBody']['content']['application/json'];
+
+// @public (undocumented)
+type ChatMessagesHistoryResponse = operations['chat___messages___history']['responses']['200']['content']['application/json'];
+
+// @public (undocumented)
+type ChatMessagesTimelineRequest = operations['chat___messages___timeline']['requestBody']['content']['application/json'];
+
+// @public (undocumented)
+type ChatMessagesTimelineResponse = operations['chat___messages___timeline']['responses']['200']['content']['application/json'];
+
 // @public (undocumented)
 type Clip = components['schemas']['Clip'];
 
@@ -1448,6 +1472,12 @@ declare namespace entities {
         ChartsUserReactionsResponse,
         ChartsUsersRequest,
         ChartsUsersResponse,
+        ChatMessagesCreateRequest,
+        ChatMessagesCreateResponse,
+        ChatMessagesHistoryRequest,
+        ChatMessagesHistoryResponse,
+        ChatMessagesTimelineRequest,
+        ChatMessagesTimelineResponse,
         ClipsAddNoteRequest,
         ClipsCreateRequest,
         ClipsCreateResponse,
@@ -1880,7 +1910,9 @@ declare namespace entities {
         MetaDetailedOnly,
         MetaDetailed,
         SystemWebhook,
-        AbuseReportNotificationRecipient
+        AbuseReportNotificationRecipient,
+        ChatMessage,
+        ChatMessageLite
     }
 }
 export { entities }
@@ -2903,7 +2935,7 @@ type PartialRolePolicyOverride = Partial<{
 }>;
 
 // @public (undocumented)
-export const permissions: readonly ["read:account", "write:account", "read:blocks", "write:blocks", "read:drive", "write:drive", "read:favorites", "write:favorites", "read:following", "write:following", "read:messaging", "write:messaging", "read:mutes", "write:mutes", "write:notes", "read:notifications", "write:notifications", "read:reactions", "write:reactions", "write:votes", "read:pages", "write:pages", "write:page-likes", "read:page-likes", "read:user-groups", "write:user-groups", "read:channels", "write:channels", "read:gallery", "write:gallery", "read:gallery-likes", "write:gallery-likes", "read:flash", "write:flash", "read:flash-likes", "write:flash-likes", "read:admin:abuse-user-reports", "write:admin:delete-account", "write:admin:delete-all-files-of-a-user", "read:admin:index-stats", "read:admin:table-stats", "read:admin:user-ips", "read:admin:meta", "write:admin:reset-password", "write:admin:resolve-abuse-user-report", "write:admin:send-email", "read:admin:server-info", "read:admin:show-moderation-log", "read:admin:show-user", "write:admin:suspend-user", "write:admin:unset-user-avatar", "write:admin:unset-user-banner", "write:admin:unsuspend-user", "write:admin:meta", "write:admin:user-note", "write:admin:roles", "read:admin:roles", "write:admin:relays", "read:admin:relays", "write:admin:invite-codes", "read:admin:invite-codes", "write:admin:announcements", "read:admin:announcements", "write:admin:avatar-decorations", "read:admin:avatar-decorations", "write:admin:federation", "write:admin:account", "read:admin:account", "write:admin:emoji", "read:admin:emoji", "write:admin:queue", "read:admin:queue", "write:admin:promo", "write:admin:drive", "read:admin:drive", "write:admin:ad", "read:admin:ad", "write:invite-codes", "read:invite-codes", "write:clip-favorite", "read:clip-favorite", "read:federation", "write:report-abuse"];
+export const permissions: readonly ["read:account", "write:account", "read:blocks", "write:blocks", "read:drive", "write:drive", "read:favorites", "write:favorites", "read:following", "write:following", "read:messaging", "write:messaging", "read:mutes", "write:mutes", "write:notes", "read:notifications", "write:notifications", "read:reactions", "write:reactions", "write:votes", "read:pages", "write:pages", "write:page-likes", "read:page-likes", "read:user-groups", "write:user-groups", "read:channels", "write:channels", "read:gallery", "write:gallery", "read:gallery-likes", "write:gallery-likes", "read:flash", "write:flash", "read:flash-likes", "write:flash-likes", "read:admin:abuse-user-reports", "write:admin:delete-account", "write:admin:delete-all-files-of-a-user", "read:admin:index-stats", "read:admin:table-stats", "read:admin:user-ips", "read:admin:meta", "write:admin:reset-password", "write:admin:resolve-abuse-user-report", "write:admin:send-email", "read:admin:server-info", "read:admin:show-moderation-log", "read:admin:show-user", "write:admin:suspend-user", "write:admin:unset-user-avatar", "write:admin:unset-user-banner", "write:admin:unsuspend-user", "write:admin:meta", "write:admin:user-note", "write:admin:roles", "read:admin:roles", "write:admin:relays", "read:admin:relays", "write:admin:invite-codes", "read:admin:invite-codes", "write:admin:announcements", "read:admin:announcements", "write:admin:avatar-decorations", "read:admin:avatar-decorations", "write:admin:federation", "write:admin:account", "read:admin:account", "write:admin:emoji", "read:admin:emoji", "write:admin:queue", "read:admin:queue", "write:admin:promo", "write:admin:drive", "read:admin:drive", "write:admin:ad", "read:admin:ad", "write:invite-codes", "read:invite-codes", "write:clip-favorite", "read:clip-favorite", "read:federation", "write:report-abuse", "write:chat", "read:chat"];
 
 // @public (undocumented)
 type PingResponse = operations['ping']['responses']['200']['content']['application/json'];
diff --git a/packages/misskey-js/src/autogen/apiClientJSDoc.ts b/packages/misskey-js/src/autogen/apiClientJSDoc.ts
index a1543952fc..b9023bb4f0 100644
--- a/packages/misskey-js/src/autogen/apiClientJSDoc.ts
+++ b/packages/misskey-js/src/autogen/apiClientJSDoc.ts
@@ -1534,6 +1534,39 @@ declare module '../api.js' {
       credential?: string | null,
     ): Promise<SwitchCaseResponseType<E, P>>;
 
+    /**
+     * No description provided.
+     * 
+     * **Credential required**: *Yes* / **Permission**: *write:chat*
+     */
+    request<E extends 'chat/messages/create', P extends Endpoints[E]['req']>(
+      endpoint: E,
+      params: P,
+      credential?: string | null,
+    ): Promise<SwitchCaseResponseType<E, P>>;
+
+    /**
+     * No description provided.
+     * 
+     * **Credential required**: *Yes* / **Permission**: *read:chat*
+     */
+    request<E extends 'chat/messages/history', P extends Endpoints[E]['req']>(
+      endpoint: E,
+      params: P,
+      credential?: string | null,
+    ): Promise<SwitchCaseResponseType<E, P>>;
+
+    /**
+     * No description provided.
+     * 
+     * **Credential required**: *Yes* / **Permission**: *read:chat*
+     */
+    request<E extends 'chat/messages/timeline', P extends Endpoints[E]['req']>(
+      endpoint: E,
+      params: P,
+      credential?: string | null,
+    ): Promise<SwitchCaseResponseType<E, P>>;
+
     /**
      * No description provided.
      * 
diff --git a/packages/misskey-js/src/autogen/endpoint.ts b/packages/misskey-js/src/autogen/endpoint.ts
index 9bb8fb2225..6bc4b377b4 100644
--- a/packages/misskey-js/src/autogen/endpoint.ts
+++ b/packages/misskey-js/src/autogen/endpoint.ts
@@ -207,6 +207,12 @@ import type {
 	ChartsUserReactionsResponse,
 	ChartsUsersRequest,
 	ChartsUsersResponse,
+	ChatMessagesCreateRequest,
+	ChatMessagesCreateResponse,
+	ChatMessagesHistoryRequest,
+	ChatMessagesHistoryResponse,
+	ChatMessagesTimelineRequest,
+	ChatMessagesTimelineResponse,
 	ClipsAddNoteRequest,
 	ClipsCreateRequest,
 	ClipsCreateResponse,
@@ -726,6 +732,9 @@ export type Endpoints = {
 	'charts/user/pv': { req: ChartsUserPvRequest; res: ChartsUserPvResponse };
 	'charts/user/reactions': { req: ChartsUserReactionsRequest; res: ChartsUserReactionsResponse };
 	'charts/users': { req: ChartsUsersRequest; res: ChartsUsersResponse };
+	'chat/messages/create': { req: ChatMessagesCreateRequest; res: ChatMessagesCreateResponse };
+	'chat/messages/history': { req: ChatMessagesHistoryRequest; res: ChatMessagesHistoryResponse };
+	'chat/messages/timeline': { req: ChatMessagesTimelineRequest; res: ChatMessagesTimelineResponse };
 	'clips/add-note': { req: ClipsAddNoteRequest; res: EmptyResponse };
 	'clips/create': { req: ClipsCreateRequest; res: ClipsCreateResponse };
 	'clips/delete': { req: ClipsDeleteRequest; res: EmptyResponse };
diff --git a/packages/misskey-js/src/autogen/entities.ts b/packages/misskey-js/src/autogen/entities.ts
index f3d26efa69..bd33db8465 100644
--- a/packages/misskey-js/src/autogen/entities.ts
+++ b/packages/misskey-js/src/autogen/entities.ts
@@ -210,6 +210,12 @@ export type ChartsUserReactionsRequest = operations['charts___user___reactions']
 export type ChartsUserReactionsResponse = operations['charts___user___reactions']['responses']['200']['content']['application/json'];
 export type ChartsUsersRequest = operations['charts___users']['requestBody']['content']['application/json'];
 export type ChartsUsersResponse = operations['charts___users']['responses']['200']['content']['application/json'];
+export type ChatMessagesCreateRequest = operations['chat___messages___create']['requestBody']['content']['application/json'];
+export type ChatMessagesCreateResponse = operations['chat___messages___create']['responses']['200']['content']['application/json'];
+export type ChatMessagesHistoryRequest = operations['chat___messages___history']['requestBody']['content']['application/json'];
+export type ChatMessagesHistoryResponse = operations['chat___messages___history']['responses']['200']['content']['application/json'];
+export type ChatMessagesTimelineRequest = operations['chat___messages___timeline']['requestBody']['content']['application/json'];
+export type ChatMessagesTimelineResponse = operations['chat___messages___timeline']['responses']['200']['content']['application/json'];
 export type ClipsAddNoteRequest = operations['clips___add-note']['requestBody']['content']['application/json'];
 export type ClipsCreateRequest = operations['clips___create']['requestBody']['content']['application/json'];
 export type ClipsCreateResponse = operations['clips___create']['responses']['200']['content']['application/json'];
diff --git a/packages/misskey-js/src/autogen/models.ts b/packages/misskey-js/src/autogen/models.ts
index 1a30da4437..6f5080a2ba 100644
--- a/packages/misskey-js/src/autogen/models.ts
+++ b/packages/misskey-js/src/autogen/models.ts
@@ -54,3 +54,5 @@ export type MetaDetailedOnly = components['schemas']['MetaDetailedOnly'];
 export type MetaDetailed = components['schemas']['MetaDetailed'];
 export type SystemWebhook = components['schemas']['SystemWebhook'];
 export type AbuseReportNotificationRecipient = components['schemas']['AbuseReportNotificationRecipient'];
+export type ChatMessage = components['schemas']['ChatMessage'];
+export type ChatMessageLite = components['schemas']['ChatMessageLite'];
diff --git a/packages/misskey-js/src/autogen/types.ts b/packages/misskey-js/src/autogen/types.ts
index 743aaf1608..2e9f81fbbb 100644
--- a/packages/misskey-js/src/autogen/types.ts
+++ b/packages/misskey-js/src/autogen/types.ts
@@ -1358,6 +1358,33 @@ export type paths = {
      */
     post: operations['charts___users'];
   };
+  '/chat/messages/create': {
+    /**
+     * chat/messages/create
+     * @description No description provided.
+     *
+     * **Credential required**: *Yes* / **Permission**: *write:chat*
+     */
+    post: operations['chat___messages___create'];
+  };
+  '/chat/messages/history': {
+    /**
+     * chat/messages/history
+     * @description No description provided.
+     *
+     * **Credential required**: *Yes* / **Permission**: *read:chat*
+     */
+    post: operations['chat___messages___history'];
+  };
+  '/chat/messages/timeline': {
+    /**
+     * chat/messages/timeline
+     * @description No description provided.
+     *
+     * **Credential required**: *Yes* / **Permission**: *read:chat*
+     */
+    post: operations['chat___messages___timeline'];
+  };
   '/clips/add-note': {
     /**
      * clips/add-note
@@ -5146,6 +5173,28 @@ export type components = {
       systemWebhookId?: string;
       systemWebhook?: components['schemas']['SystemWebhook'];
     };
+    ChatMessage: {
+      id: string;
+      /** Format: date-time */
+      createdAt: string;
+      fromUserId: string;
+      fromUser?: components['schemas']['UserLite'];
+      toUserId?: string | null;
+      toUser?: components['schemas']['UserLite'] | null;
+      text?: string | null;
+      fileId?: string | null;
+      file?: components['schemas']['DriveFile'] | null;
+    };
+    ChatMessageLite: {
+      id: string;
+      /** Format: date-time */
+      createdAt: string;
+      fromUserId: string;
+      toUserId?: string | null;
+      text?: string | null;
+      fileId?: string | null;
+      file?: components['schemas']['DriveFile'] | null;
+    };
   };
   responses: never;
   parameters: never;
@@ -13669,6 +13718,185 @@ export type operations = {
       };
     };
   };
+  /**
+   * chat/messages/create
+   * @description No description provided.
+   *
+   * **Credential required**: *Yes* / **Permission**: *write:chat*
+   */
+  chat___messages___create: {
+    requestBody: {
+      content: {
+        'application/json': {
+          text?: string | null;
+          /** Format: misskey:id */
+          fileId?: string;
+          /** Format: misskey:id */
+          userId?: string | null;
+        };
+      };
+    };
+    responses: {
+      /** @description OK (with results) */
+      200: {
+        content: {
+          'application/json': components['schemas']['ChatMessageLite'];
+        };
+      };
+      /** @description Client error */
+      400: {
+        content: {
+          'application/json': components['schemas']['Error'];
+        };
+      };
+      /** @description Authentication error */
+      401: {
+        content: {
+          'application/json': components['schemas']['Error'];
+        };
+      };
+      /** @description Forbidden error */
+      403: {
+        content: {
+          'application/json': components['schemas']['Error'];
+        };
+      };
+      /** @description I'm Ai */
+      418: {
+        content: {
+          'application/json': components['schemas']['Error'];
+        };
+      };
+      /** @description Too many requests */
+      429: {
+        content: {
+          'application/json': components['schemas']['Error'];
+        };
+      };
+      /** @description Internal server error */
+      500: {
+        content: {
+          'application/json': components['schemas']['Error'];
+        };
+      };
+    };
+  };
+  /**
+   * chat/messages/history
+   * @description No description provided.
+   *
+   * **Credential required**: *Yes* / **Permission**: *read:chat*
+   */
+  chat___messages___history: {
+    requestBody: {
+      content: {
+        'application/json': {
+          /** @default 10 */
+          limit?: number;
+          /** @default false */
+          group?: boolean;
+        };
+      };
+    };
+    responses: {
+      /** @description OK (with results) */
+      200: {
+        content: {
+          'application/json': components['schemas']['ChatMessage'][];
+        };
+      };
+      /** @description Client error */
+      400: {
+        content: {
+          'application/json': components['schemas']['Error'];
+        };
+      };
+      /** @description Authentication error */
+      401: {
+        content: {
+          'application/json': components['schemas']['Error'];
+        };
+      };
+      /** @description Forbidden error */
+      403: {
+        content: {
+          'application/json': components['schemas']['Error'];
+        };
+      };
+      /** @description I'm Ai */
+      418: {
+        content: {
+          'application/json': components['schemas']['Error'];
+        };
+      };
+      /** @description Internal server error */
+      500: {
+        content: {
+          'application/json': components['schemas']['Error'];
+        };
+      };
+    };
+  };
+  /**
+   * chat/messages/timeline
+   * @description No description provided.
+   *
+   * **Credential required**: *Yes* / **Permission**: *read:chat*
+   */
+  chat___messages___timeline: {
+    requestBody: {
+      content: {
+        'application/json': {
+          /** @default 10 */
+          limit?: number;
+          /** Format: misskey:id */
+          sinceId?: string;
+          /** Format: misskey:id */
+          untilId?: string;
+          /** Format: misskey:id */
+          userId?: string | null;
+        };
+      };
+    };
+    responses: {
+      /** @description OK (with results) */
+      200: {
+        content: {
+          'application/json': components['schemas']['ChatMessageLite'][];
+        };
+      };
+      /** @description Client error */
+      400: {
+        content: {
+          'application/json': components['schemas']['Error'];
+        };
+      };
+      /** @description Authentication error */
+      401: {
+        content: {
+          'application/json': components['schemas']['Error'];
+        };
+      };
+      /** @description Forbidden error */
+      403: {
+        content: {
+          'application/json': components['schemas']['Error'];
+        };
+      };
+      /** @description I'm Ai */
+      418: {
+        content: {
+          'application/json': components['schemas']['Error'];
+        };
+      };
+      /** @description Internal server error */
+      500: {
+        content: {
+          'application/json': components['schemas']['Error'];
+        };
+      };
+    };
+  };
   /**
    * clips/add-note
    * @description No description provided.