Role (#9437)

* wip

* Update CHANGELOG.md

* wip

* wip

* wip

* Update create.ts

* wip

* wip

* Update CHANGELOG.md

* wip

* wip

* wip

* wip

* wip

* wip

* wip

* Update CHANGELOG.md

* wip

* wip

* Update delete.ts

* Update delete.ts

* wip

* wip

* wip

* Update account-info.vue

* wip

* wip

* Update settings.vue

* Update user-info.vue

* wip

* Update show-file.ts

* Update show-user.ts

* wip

* wip

* Update delete.ts

* wip

* wip

* Update overview.moderators.vue

* Create 1673500412259-Role.js

* wip

* wip

* Update roles.vue

* 色

* Update roles.vue

* integrate silence

* wip

* wip

48 files changed, 761 insertions, 422 deletions

diff --git a/packages/backend/src/server/NodeinfoServerService.ts b/packages/backend/src/server/NodeinfoServerService.ts
index c4236c8752..19380d13a4 100644
--- a/packages/backend/src/server/NodeinfoServerService.ts
+++ b/packages/backend/src/server/NodeinfoServerService.ts
@@ -10,6 +10,7 @@ import { UserEntityService } from '@/core/entities/UserEntityService.js';
 import { bindThis } from '@/decorators.js';
 import NotesChart from '@/core/chart/charts/notes.js';
 import UsersChart from '@/core/chart/charts/users.js';
+import { DEFAULT_ROLE } from '@/core/RoleService.js';
 import type { FastifyInstance, FastifyPluginOptions } from 'fastify';
 
 const nodeinfo2_1path = '/nodeinfo/2.1';
@@ -73,6 +74,8 @@ export class NodeinfoServerService {
 
 			const proxyAccount = meta.proxyAccountId ? await this.userEntityService.pack(meta.proxyAccountId).catch(() => null) : null;
 
+			const baseRoleOptions = { ...DEFAULT_ROLE, ...meta.defaultRoleOverride };
+
 			return {
 				software: {
 					name: 'misskey',
@@ -102,8 +105,8 @@ export class NodeinfoServerService {
 					repositoryUrl: meta.repositoryUrl,
 					feedbackUrl: meta.feedbackUrl,
 					disableRegistration: meta.disableRegistration,
-					disableLocalTimeline: meta.disableLocalTimeline,
-					disableGlobalTimeline: meta.disableGlobalTimeline,
+					disableLocalTimeline: !baseRoleOptions.ltlAvailable,
+					disableGlobalTimeline: !baseRoleOptions.gtlAvailable,
 					emailRequiredForSignup: meta.emailRequiredForSignup,
 					enableHcaptcha: meta.enableHcaptcha,
 					enableRecaptcha: meta.enableRecaptcha,
diff --git a/packages/backend/src/server/api/ApiCallService.ts b/packages/backend/src/server/api/ApiCallService.ts
index 68f43c7dfc..415fbf08dd 100644
--- a/packages/backend/src/server/api/ApiCallService.ts
+++ b/packages/backend/src/server/api/ApiCallService.ts
@@ -12,6 +12,7 @@ import type { UserIpsRepository } from '@/models/index.js';
 import { MetaService } from '@/core/MetaService.js';
 import { createTemp } from '@/misc/create-temp.js';
 import { bindThis } from '@/decorators.js';
+import { RoleService } from '@/core/RoleService.js';
 import { ApiError } from './error.js';
 import { RateLimiterService } from './RateLimiterService.js';
 import { ApiLoggerService } from './ApiLoggerService.js';
@@ -41,6 +42,7 @@ export class ApiCallService implements OnApplicationShutdown {
 		private metaService: MetaService,
 		private authenticateService: AuthenticateService,
 		private rateLimiterService: RateLimiterService,
+		private roleService: RoleService,
 		private apiLoggerService: ApiLoggerService,
 	) {
 		this.logger = this.apiLoggerService.logger;
@@ -202,7 +204,6 @@ export class ApiCallService implements OnApplicationShutdown {
 		request: FastifyRequest<{ Body: Record<string, unknown> | undefined, Querystring: Record<string, unknown> }>,
 	) {
 		const isSecure = user != null && token == null;
-		const isModerator = user != null && (user.isModerator || user.isAdmin);
 
 		if (ep.meta.secure && !isSecure) {
 			throw new ApiError(accessDenied);
@@ -234,30 +235,40 @@ export class ApiCallService implements OnApplicationShutdown {
 			});
 		}
 
-		if (ep.meta.requireCredential && user == null) {
-			throw new ApiError({
-				message: 'Credential required.',
-				code: 'CREDENTIAL_REQUIRED',
-				id: '1384574d-a912-4b81-8601-c7b1c4085df1',
-				httpStatusCode: 401,
-			});
-		}
-
-		if (ep.meta.requireCredential && user!.isSuspended) {
-			throw new ApiError({
-				message: 'Your account has been suspended.',
-				code: 'YOUR_ACCOUNT_SUSPENDED',
-				id: 'a8c724b3-6e9c-4b46-b1a8-bc3ed6258370',
-				httpStatusCode: 403,
-			});
-		}
-
-		if (ep.meta.requireAdmin && !user!.isAdmin) {
-			throw new ApiError(accessDenied, { reason: 'You are not the admin.' });
+		if (ep.meta.requireCredential || ep.meta.requireModerator || ep.meta.requireAdmin) {
+			if (user == null) {
+				throw new ApiError({
+					message: 'Credential required.',
+					code: 'CREDENTIAL_REQUIRED',
+					id: '1384574d-a912-4b81-8601-c7b1c4085df1',
+					httpStatusCode: 401,
+				});
+			} else if (user!.isSuspended) {
+				throw new ApiError({
+					message: 'Your account has been suspended.',
+					code: 'YOUR_ACCOUNT_SUSPENDED',
+					id: 'a8c724b3-6e9c-4b46-b1a8-bc3ed6258370',
+					httpStatusCode: 403,
+				});
+			}
 		}
 
-		if (ep.meta.requireModerator && !isModerator) {
-			throw new ApiError(accessDenied, { reason: 'You are not a moderator.' });
+		if ((ep.meta.requireModerator || ep.meta.requireAdmin) && !user!.isRoot) {
+			const myRoles = await this.roleService.getUserRoles(user!.id);
+			if (ep.meta.requireModerator && !myRoles.some(r => r.isModerator || r.isAdministrator)) {
+				throw new ApiError({
+					message: 'You are not assigned to a moderator role.',
+					code: 'ROLE_PERMISSION_DENIED',
+					id: 'd33d5333-db36-423d-a8f9-1a2b9549da41',
+				});
+			}
+			if (ep.meta.requireAdmin && !myRoles.some(r => r.isAdministrator)) {
+				throw new ApiError({
+					message: 'You are not assigned to an administrator role.',
+					code: 'ROLE_PERMISSION_DENIED',
+					id: 'c3d38592-54c0-429d-be96-5636b0431a61',
+				});
+			}
 		}
 
 		if (token && ep.meta.kind && !token.permission.some(p => p === ep.meta.kind)) {
diff --git a/packages/backend/src/server/api/EndpointsModule.ts b/packages/backend/src/server/api/EndpointsModule.ts
index ab9349966d..c226c4e93c 100644
--- a/packages/backend/src/server/api/EndpointsModule.ts
+++ b/packages/backend/src/server/api/EndpointsModule.ts
@@ -38,8 +38,6 @@ import * as ep___admin_getIndexStats from './endpoints/admin/get-index-stats.js'
 import * as ep___admin_getTableStats from './endpoints/admin/get-table-stats.js';
 import * as ep___admin_getUserIps from './endpoints/admin/get-user-ips.js';
 import * as ep___admin_invite from './endpoints/admin/invite.js';
-import * as ep___admin_moderators_add from './endpoints/admin/moderators/add.js';
-import * as ep___admin_moderators_remove from './endpoints/admin/moderators/remove.js';
 import * as ep___admin_promo_create from './endpoints/admin/promo/create.js';
 import * as ep___admin_queue_clear from './endpoints/admin/queue/clear.js';
 import * as ep___admin_queue_deliverDelayed from './endpoints/admin/queue/deliver-delayed.js';
@@ -55,13 +53,19 @@ import * as ep___admin_serverInfo from './endpoints/admin/server-info.js';
 import * as ep___admin_showModerationLogs from './endpoints/admin/show-moderation-logs.js';
 import * as ep___admin_showUser from './endpoints/admin/show-user.js';
 import * as ep___admin_showUsers from './endpoints/admin/show-users.js';
-import * as ep___admin_silenceUser from './endpoints/admin/silence-user.js';
 import * as ep___admin_suspendUser from './endpoints/admin/suspend-user.js';
-import * as ep___admin_unsilenceUser from './endpoints/admin/unsilence-user.js';
 import * as ep___admin_unsuspendUser from './endpoints/admin/unsuspend-user.js';
 import * as ep___admin_updateMeta from './endpoints/admin/update-meta.js';
 import * as ep___admin_deleteAccount from './endpoints/admin/delete-account.js';
 import * as ep___admin_updateUserNote from './endpoints/admin/update-user-note.js';
+import * as ep___admin_roles_create from './endpoints/admin/roles/create.js';
+import * as ep___admin_roles_delete from './endpoints/admin/roles/delete.js';
+import * as ep___admin_roles_list from './endpoints/admin/roles/list.js';
+import * as ep___admin_roles_show from './endpoints/admin/roles/show.js';
+import * as ep___admin_roles_update from './endpoints/admin/roles/update.js';
+import * as ep___admin_roles_assign from './endpoints/admin/roles/assign.js';
+import * as ep___admin_roles_unassign from './endpoints/admin/roles/unassign.js';
+import * as ep___admin_roles_updateDefaultRoleOverride from './endpoints/admin/roles/update-default-role-override.js';
 import * as ep___announcements from './endpoints/announcements.js';
 import * as ep___antennas_create from './endpoints/antennas/create.js';
 import * as ep___antennas_delete from './endpoints/antennas/delete.js';
@@ -326,7 +330,6 @@ import * as ep___users_search from './endpoints/users/search.js';
 import * as ep___users_show from './endpoints/users/show.js';
 import * as ep___users_stats from './endpoints/users/stats.js';
 import * as ep___fetchRss from './endpoints/fetch-rss.js';
-import * as ep___admin_driveCapOverride from './endpoints/admin/drive-capacity-override.js';
 import * as ep___retention from './endpoints/retention.js';
 import { GetterService } from './GetterService.js';
 import { ApiLoggerService } from './ApiLoggerService.js';
@@ -369,8 +372,6 @@ const $admin_getIndexStats: Provider = { provide: 'ep:admin/get-index-stats', us
 const $admin_getTableStats: Provider = { provide: 'ep:admin/get-table-stats', useClass: ep___admin_getTableStats.default };
 const $admin_getUserIps: Provider = { provide: 'ep:admin/get-user-ips', useClass: ep___admin_getUserIps.default };
 const $admin_invite: Provider = { provide: 'ep:admin/invite', useClass: ep___admin_invite.default };
-const $admin_moderators_add: Provider = { provide: 'ep:admin/moderators/add', useClass: ep___admin_moderators_add.default };
-const $admin_moderators_remove: Provider = { provide: 'ep:admin/moderators/remove', useClass: ep___admin_moderators_remove.default };
 const $admin_promo_create: Provider = { provide: 'ep:admin/promo/create', useClass: ep___admin_promo_create.default };
 const $admin_queue_clear: Provider = { provide: 'ep:admin/queue/clear', useClass: ep___admin_queue_clear.default };
 const $admin_queue_deliverDelayed: Provider = { provide: 'ep:admin/queue/deliver-delayed', useClass: ep___admin_queue_deliverDelayed.default };
@@ -386,13 +387,19 @@ const $admin_serverInfo: Provider = { provide: 'ep:admin/server-info', useClass:
 const $admin_showModerationLogs: Provider = { provide: 'ep:admin/show-moderation-logs', useClass: ep___admin_showModerationLogs.default };
 const $admin_showUser: Provider = { provide: 'ep:admin/show-user', useClass: ep___admin_showUser.default };
 const $admin_showUsers: Provider = { provide: 'ep:admin/show-users', useClass: ep___admin_showUsers.default };
-const $admin_silenceUser: Provider = { provide: 'ep:admin/silence-user', useClass: ep___admin_silenceUser.default };
 const $admin_suspendUser: Provider = { provide: 'ep:admin/suspend-user', useClass: ep___admin_suspendUser.default };
-const $admin_unsilenceUser: Provider = { provide: 'ep:admin/unsilence-user', useClass: ep___admin_unsilenceUser.default };
 const $admin_unsuspendUser: Provider = { provide: 'ep:admin/unsuspend-user', useClass: ep___admin_unsuspendUser.default };
 const $admin_updateMeta: Provider = { provide: 'ep:admin/update-meta', useClass: ep___admin_updateMeta.default };
 const $admin_deleteAccount: Provider = { provide: 'ep:admin/delete-account', useClass: ep___admin_deleteAccount.default };
 const $admin_updateUserNote: Provider = { provide: 'ep:admin/update-user-note', useClass: ep___admin_updateUserNote.default };
+const $admin_roles_create: Provider = { provide: 'ep:admin/roles/create', useClass: ep___admin_roles_create.default };
+const $admin_roles_delete: Provider = { provide: 'ep:admin/roles/delete', useClass: ep___admin_roles_delete.default };
+const $admin_roles_list: Provider = { provide: 'ep:admin/roles/list', useClass: ep___admin_roles_list.default };
+const $admin_roles_show: Provider = { provide: 'ep:admin/roles/show', useClass: ep___admin_roles_show.default };
+const $admin_roles_update: Provider = { provide: 'ep:admin/roles/update', useClass: ep___admin_roles_update.default };
+const $admin_roles_assign: Provider = { provide: 'ep:admin/roles/assign', useClass: ep___admin_roles_assign.default };
+const $admin_roles_unassign: Provider = { provide: 'ep:admin/roles/unassign', useClass: ep___admin_roles_unassign.default };
+const $admin_roles_updateDefaultRoleOverride: Provider = { provide: 'ep:admin/roles/update-default-role-override', useClass: ep___admin_roles_updateDefaultRoleOverride.default };
 const $announcements: Provider = { provide: 'ep:announcements', useClass: ep___announcements.default };
 const $antennas_create: Provider = { provide: 'ep:antennas/create', useClass: ep___antennas_create.default };
 const $antennas_delete: Provider = { provide: 'ep:antennas/delete', useClass: ep___antennas_delete.default };
@@ -656,7 +663,6 @@ const $users_searchByUsernameAndHost: Provider = { provide: 'ep:users/search-by-
 const $users_search: Provider = { provide: 'ep:users/search', useClass: ep___users_search.default };
 const $users_show: Provider = { provide: 'ep:users/show', useClass: ep___users_show.default };
 const $users_stats: Provider = { provide: 'ep:users/stats', useClass: ep___users_stats.default };
-const $admin_driveCapOverride: Provider = { provide: 'ep:admin/drive-capacity-override', useClass: ep___admin_driveCapOverride.default };
 const $fetchRss: Provider = { provide: 'ep:fetch-rss', useClass: ep___fetchRss.default };
 const $retention: Provider = { provide: 'ep:retention', useClass: ep___retention.default };
 
@@ -704,8 +710,6 @@ const $retention: Provider = { provide: 'ep:retention', useClass: ep___retention
 		$admin_getTableStats,
 		$admin_getUserIps,
 		$admin_invite,
-		$admin_moderators_add,
-		$admin_moderators_remove,
 		$admin_promo_create,
 		$admin_queue_clear,
 		$admin_queue_deliverDelayed,
@@ -721,13 +725,19 @@ const $retention: Provider = { provide: 'ep:retention', useClass: ep___retention
 		$admin_showModerationLogs,
 		$admin_showUser,
 		$admin_showUsers,
-		$admin_silenceUser,
 		$admin_suspendUser,
-		$admin_unsilenceUser,
 		$admin_unsuspendUser,
 		$admin_updateMeta,
 		$admin_deleteAccount,
 		$admin_updateUserNote,
+		$admin_roles_create,
+		$admin_roles_delete,
+		$admin_roles_list,
+		$admin_roles_show,
+		$admin_roles_update,
+		$admin_roles_assign,
+		$admin_roles_unassign,
+		$admin_roles_updateDefaultRoleOverride,
 		$announcements,
 		$antennas_create,
 		$antennas_delete,
@@ -991,7 +1001,6 @@ const $retention: Provider = { provide: 'ep:retention', useClass: ep___retention
 		$users_search,
 		$users_show,
 		$users_stats,
-		$admin_driveCapOverride,
 		$fetchRss,
 		$retention,
 	],
@@ -1033,8 +1042,6 @@ const $retention: Provider = { provide: 'ep:retention', useClass: ep___retention
 		$admin_getTableStats,
 		$admin_getUserIps,
 		$admin_invite,
-		$admin_moderators_add,
-		$admin_moderators_remove,
 		$admin_promo_create,
 		$admin_queue_clear,
 		$admin_queue_deliverDelayed,
@@ -1050,13 +1057,19 @@ const $retention: Provider = { provide: 'ep:retention', useClass: ep___retention
 		$admin_showModerationLogs,
 		$admin_showUser,
 		$admin_showUsers,
-		$admin_silenceUser,
 		$admin_suspendUser,
-		$admin_unsilenceUser,
 		$admin_unsuspendUser,
 		$admin_updateMeta,
 		$admin_deleteAccount,
 		$admin_updateUserNote,
+		$admin_roles_create,
+		$admin_roles_delete,
+		$admin_roles_list,
+		$admin_roles_show,
+		$admin_roles_update,
+		$admin_roles_assign,
+		$admin_roles_unassign,
+		$admin_roles_updateDefaultRoleOverride,
 		$announcements,
 		$antennas_create,
 		$antennas_delete,
@@ -1318,7 +1331,6 @@ const $retention: Provider = { provide: 'ep:retention', useClass: ep___retention
 		$users_search,
 		$users_show,
 		$users_stats,
-		$admin_driveCapOverride,
 		$fetchRss,
 		$retention,
 	],
diff --git a/packages/backend/src/server/api/endpoints.ts b/packages/backend/src/server/api/endpoints.ts
index f9749ad660..1df3240e41 100644
--- a/packages/backend/src/server/api/endpoints.ts
+++ b/packages/backend/src/server/api/endpoints.ts
@@ -37,8 +37,6 @@ import * as ep___admin_getIndexStats from './endpoints/admin/get-index-stats.js'
 import * as ep___admin_getTableStats from './endpoints/admin/get-table-stats.js';
 import * as ep___admin_getUserIps from './endpoints/admin/get-user-ips.js';
 import * as ep___admin_invite from './endpoints/admin/invite.js';
-import * as ep___admin_moderators_add from './endpoints/admin/moderators/add.js';
-import * as ep___admin_moderators_remove from './endpoints/admin/moderators/remove.js';
 import * as ep___admin_promo_create from './endpoints/admin/promo/create.js';
 import * as ep___admin_queue_clear from './endpoints/admin/queue/clear.js';
 import * as ep___admin_queue_deliverDelayed from './endpoints/admin/queue/deliver-delayed.js';
@@ -54,13 +52,19 @@ import * as ep___admin_serverInfo from './endpoints/admin/server-info.js';
 import * as ep___admin_showModerationLogs from './endpoints/admin/show-moderation-logs.js';
 import * as ep___admin_showUser from './endpoints/admin/show-user.js';
 import * as ep___admin_showUsers from './endpoints/admin/show-users.js';
-import * as ep___admin_silenceUser from './endpoints/admin/silence-user.js';
 import * as ep___admin_suspendUser from './endpoints/admin/suspend-user.js';
-import * as ep___admin_unsilenceUser from './endpoints/admin/unsilence-user.js';
 import * as ep___admin_unsuspendUser from './endpoints/admin/unsuspend-user.js';
 import * as ep___admin_updateMeta from './endpoints/admin/update-meta.js';
 import * as ep___admin_deleteAccount from './endpoints/admin/delete-account.js';
 import * as ep___admin_updateUserNote from './endpoints/admin/update-user-note.js';
+import * as ep___admin_roles_create from './endpoints/admin/roles/create.js';
+import * as ep___admin_roles_delete from './endpoints/admin/roles/delete.js';
+import * as ep___admin_roles_list from './endpoints/admin/roles/list.js';
+import * as ep___admin_roles_show from './endpoints/admin/roles/show.js';
+import * as ep___admin_roles_update from './endpoints/admin/roles/update.js';
+import * as ep___admin_roles_assign from './endpoints/admin/roles/assign.js';
+import * as ep___admin_roles_unassign from './endpoints/admin/roles/unassign.js';
+import * as ep___admin_roles_updateDefaultRoleOverride from './endpoints/admin/roles/update-default-role-override.js';
 import * as ep___announcements from './endpoints/announcements.js';
 import * as ep___antennas_create from './endpoints/antennas/create.js';
 import * as ep___antennas_delete from './endpoints/antennas/delete.js';
@@ -325,7 +329,6 @@ import * as ep___users_search from './endpoints/users/search.js';
 import * as ep___users_show from './endpoints/users/show.js';
 import * as ep___users_stats from './endpoints/users/stats.js';
 import * as ep___fetchRss from './endpoints/fetch-rss.js';
-import * as ep___admin_driveCapOverride from './endpoints/admin/drive-capacity-override.js';
 import * as ep___retention from './endpoints/retention.js';
 
 const eps = [
@@ -366,8 +369,6 @@ const eps = [
 	['admin/get-table-stats', ep___admin_getTableStats],
 	['admin/get-user-ips', ep___admin_getUserIps],
 	['admin/invite', ep___admin_invite],
-	['admin/moderators/add', ep___admin_moderators_add],
-	['admin/moderators/remove', ep___admin_moderators_remove],
 	['admin/promo/create', ep___admin_promo_create],
 	['admin/queue/clear', ep___admin_queue_clear],
 	['admin/queue/deliver-delayed', ep___admin_queue_deliverDelayed],
@@ -383,13 +384,19 @@ const eps = [
 	['admin/show-moderation-logs', ep___admin_showModerationLogs],
 	['admin/show-user', ep___admin_showUser],
 	['admin/show-users', ep___admin_showUsers],
-	['admin/silence-user', ep___admin_silenceUser],
 	['admin/suspend-user', ep___admin_suspendUser],
-	['admin/unsilence-user', ep___admin_unsilenceUser],
 	['admin/unsuspend-user', ep___admin_unsuspendUser],
 	['admin/update-meta', ep___admin_updateMeta],
 	['admin/delete-account', ep___admin_deleteAccount],
 	['admin/update-user-note', ep___admin_updateUserNote],
+	['admin/roles/create', ep___admin_roles_create],
+	['admin/roles/delete', ep___admin_roles_delete],
+	['admin/roles/list', ep___admin_roles_list],
+	['admin/roles/show', ep___admin_roles_show],
+	['admin/roles/update', ep___admin_roles_update],
+	['admin/roles/assign', ep___admin_roles_assign],
+	['admin/roles/unassign', ep___admin_roles_unassign],
+	['admin/roles/update-default-role-override', ep___admin_roles_updateDefaultRoleOverride],
 	['announcements', ep___announcements],
 	['antennas/create', ep___antennas_create],
 	['antennas/delete', ep___antennas_delete],
@@ -653,7 +660,6 @@ const eps = [
 	['users/search', ep___users_search],
 	['users/show', ep___users_show],
 	['users/stats', ep___users_stats],
-	['admin/drive-capacity-override', ep___admin_driveCapOverride],
 	['fetch-rss', ep___fetchRss],
 	['retention', ep___retention],
 ];
@@ -680,14 +686,14 @@ export interface IEndpointMeta {
 	readonly requireCredential?: boolean;
 
 	/**
-	 * 管理者のみ使えるエンドポイントか否か
+	 * isModeratorなロールを必要とするか
 	 */
-	readonly requireAdmin?: boolean;
+	readonly requireModerator?: boolean;
 
 	/**
-	 * 管理者またはモデレーターのみ使えるエンドポイントか否か
+	 * isAdministratorなロールを必要とするか
 	 */
-	readonly requireModerator?: boolean;
+	readonly requireAdmin?: boolean;
 
 	/**
 	 * エンドポイントのリミテーションに関するやつ
diff --git a/packages/backend/src/server/api/endpoints/admin/accounts/create.ts b/packages/backend/src/server/api/endpoints/admin/accounts/create.ts
index c76ece9e05..bac8ae16e5 100644
--- a/packages/backend/src/server/api/endpoints/admin/accounts/create.ts
+++ b/packages/backend/src/server/api/endpoints/admin/accounts/create.ts
@@ -47,7 +47,7 @@ export default class extends Endpoint<typeof meta, typeof paramDef> {
 			const noUsers = (await this.usersRepository.countBy({
 				host: IsNull(),
 			})) === 0;
-			if (!noUsers && !me?.isAdmin) throw new Error('access denied');
+			if (!noUsers && !me?.isRoot) throw new Error('access denied');
 
 			const { account, secret } = await this.signupService.signup({
 				username: ps.username,
diff --git a/packages/backend/src/server/api/endpoints/admin/accounts/delete.ts b/packages/backend/src/server/api/endpoints/admin/accounts/delete.ts
index b7081987ca..e9f72676f0 100644
--- a/packages/backend/src/server/api/endpoints/admin/accounts/delete.ts
+++ b/packages/backend/src/server/api/endpoints/admin/accounts/delete.ts
@@ -11,7 +11,7 @@ export const meta = {
 	tags: ['admin'],
 
 	requireCredential: true,
-	requireModerator: true,
+	requireAdmin: true,
 } as const;
 
 export const paramDef = {
@@ -41,12 +41,8 @@ export default class extends Endpoint<typeof meta, typeof paramDef> {
 				throw new Error('user not found');
 			}
 
-			if (user.isAdmin) {
-				throw new Error('cannot suspend admin');
-			}
-
-			if (user.isModerator) {
-				throw new Error('cannot suspend moderator');
+			if (user.isRoot) {
+				throw new Error('cannot delete a root account');
 			}
 
 			if (this.userEntityService.isLocalUser(user)) {
diff --git a/packages/backend/src/server/api/endpoints/admin/delete-all-files-of-a-user.ts b/packages/backend/src/server/api/endpoints/admin/delete-all-files-of-a-user.ts
index 22b78bf19d..c193ed3fb3 100644
--- a/packages/backend/src/server/api/endpoints/admin/delete-all-files-of-a-user.ts
+++ b/packages/backend/src/server/api/endpoints/admin/delete-all-files-of-a-user.ts
@@ -8,7 +8,7 @@ export const meta = {
 	tags: ['admin'],
 
 	requireCredential: true,
-	requireModerator: true,
+	requireAdmin: true,
 } as const;
 
 export const paramDef = {
diff --git a/packages/backend/src/server/api/endpoints/admin/drive-capacity-override.ts b/packages/backend/src/server/api/endpoints/admin/drive-capacity-override.ts
deleted file mode 100644
index 665e2a8cce..0000000000
--- a/packages/backend/src/server/api/endpoints/admin/drive-capacity-override.ts
+++ /dev/null
@@ -1,61 +0,0 @@
-import { Inject, Injectable } from '@nestjs/common';
-import { Endpoint } from '@/server/api/endpoint-base.js';
-import type { UsersRepository } from '@/models/index.js';
-import { ModerationLogService } from '@/core/ModerationLogService.js';
-import { DI } from '@/di-symbols.js';
-import { UserEntityService } from '@/core/entities/UserEntityService.js';
-
-export const meta = {
-	tags: ['admin'],
-
-	requireCredential: true,
-	requireModerator: true,
-} as const;
-
-export const paramDef = {
-	type: 'object',
-	properties: {
-		userId: { type: 'string', format: 'misskey:id' },
-		overrideMb: { type: 'number', nullable: true },
-	},
-	required: ['userId', 'overrideMb'],
-} as const;
-
-// eslint-disable-next-line import/no-default-export
-@Injectable()
-export default class extends Endpoint<typeof meta, typeof paramDef> {
-	constructor(
-		@Inject(DI.usersRepository)
-		private usersRepository: UsersRepository,
-
-		private userEntityService: UserEntityService,
-		private moderationLogService: ModerationLogService,
-	) {
-		super(meta, paramDef, async (ps, me) => {
-			const user = await this.usersRepository.findOneBy({ id: ps.userId });
-
-			if (user == null) {
-				throw new Error('user not found');
-			}
-
-			if (!this.userEntityService.isLocalUser(user)) {
-				throw new Error('user is not local user');
-			} 
-
-			/*if (user.isAdmin) {
-		throw new Error('cannot suspend admin');
-	}
-	if (user.isModerator) {
-		throw new Error('cannot suspend moderator');
-	}*/
-
-			await this.usersRepository.update(user.id, {
-				driveCapacityOverrideMb: ps.overrideMb,
-			});
-
-			this.moderationLogService.insertModerationLog(me, 'change-drive-capacity-override', {
-				targetId: user.id,
-			});
-		});
-	}
-}
diff --git a/packages/backend/src/server/api/endpoints/admin/drive/show-file.ts b/packages/backend/src/server/api/endpoints/admin/drive/show-file.ts
index 6180eeae2b..6376cb153c 100644
--- a/packages/backend/src/server/api/endpoints/admin/drive/show-file.ts
+++ b/packages/backend/src/server/api/endpoints/admin/drive/show-file.ts
@@ -2,6 +2,7 @@ import { Inject, Injectable } from '@nestjs/common';
 import type { DriveFilesRepository } from '@/models/index.js';
 import { Endpoint } from '@/server/api/endpoint-base.js';
 import { DI } from '@/di-symbols.js';
+import { RoleService } from '@/core/RoleService.js';
 import { ApiError } from '../../../error.js';
 
 export const meta = {
@@ -159,6 +160,8 @@ export default class extends Endpoint<typeof meta, typeof paramDef> {
 	constructor(
 		@Inject(DI.driveFilesRepository)
 		private driveFilesRepository: DriveFilesRepository,
+
+		private roleService: RoleService,
 	) {
 		super(meta, paramDef, async (ps, me) => {
 			const file = ps.fileId ? await this.driveFilesRepository.findOneBy({ id: ps.fileId }) : await this.driveFilesRepository.findOne({
@@ -175,6 +178,8 @@ export default class extends Endpoint<typeof meta, typeof paramDef> {
 				throw new ApiError(meta.errors.noSuchFile);
 			}
 
+			const isModerator = await this.roleService.isModerator(me);
+
 			return {
 				id: file.id,
 				userId: file.userId,
@@ -202,8 +207,8 @@ export default class extends Endpoint<typeof meta, typeof paramDef> {
 				name: file.name,
 				md5: file.md5,
 				createdAt: file.createdAt.toISOString(),
-				requestIp: me.isAdmin ? file.requestIp : null,
-				requestHeaders: me.isAdmin ? file.requestHeaders : null,
+				requestIp: isModerator ? file.requestIp : null,
+				requestHeaders: isModerator ? file.requestHeaders : null,
 			};
 		});
 	}
diff --git a/packages/backend/src/server/api/endpoints/admin/get-index-stats.ts b/packages/backend/src/server/api/endpoints/admin/get-index-stats.ts
index e53d0bfcea..8ffd2b01e7 100644
--- a/packages/backend/src/server/api/endpoints/admin/get-index-stats.ts
+++ b/packages/backend/src/server/api/endpoints/admin/get-index-stats.ts
@@ -5,7 +5,7 @@ import { DI } from '@/di-symbols.js';
 
 export const meta = {
 	requireCredential: true,
-	requireModerator: true,
+	requireAdmin: true,
 
 	tags: ['admin'],
 } as const;
diff --git a/packages/backend/src/server/api/endpoints/admin/get-table-stats.ts b/packages/backend/src/server/api/endpoints/admin/get-table-stats.ts
index 41014cb167..09d61bd741 100644
--- a/packages/backend/src/server/api/endpoints/admin/get-table-stats.ts
+++ b/packages/backend/src/server/api/endpoints/admin/get-table-stats.ts
@@ -5,7 +5,7 @@ import { DI } from '@/di-symbols.js';
 
 export const meta = {
 	requireCredential: true,
-	requireModerator: true,
+	requireAdmin: true,
 
 	tags: ['admin'],
 
diff --git a/packages/backend/src/server/api/endpoints/admin/get-user-ips.ts b/packages/backend/src/server/api/endpoints/admin/get-user-ips.ts
index 947a673def..bfcc8a700b 100644
--- a/packages/backend/src/server/api/endpoints/admin/get-user-ips.ts
+++ b/packages/backend/src/server/api/endpoints/admin/get-user-ips.ts
@@ -7,7 +7,7 @@ export const meta = {
 	tags: ['admin'],
 
 	requireCredential: true,
-	requireAdmin: true,
+	requireModerator: true,
 } as const;
 
 export const paramDef = {
diff --git a/packages/backend/src/server/api/endpoints/admin/meta.ts b/packages/backend/src/server/api/endpoints/admin/meta.ts
index 794ea3d5c9..33f162acf9 100644
--- a/packages/backend/src/server/api/endpoints/admin/meta.ts
+++ b/packages/backend/src/server/api/endpoints/admin/meta.ts
@@ -4,6 +4,7 @@ import { Endpoint } from '@/server/api/endpoint-base.js';
 import { MetaService } from '@/core/MetaService.js';
 import type { Config } from '@/config.js';
 import { DI } from '@/di-symbols.js';
+import { DEFAULT_ROLE } from '@/core/RoleService.js';
 
 export const meta = {
 	tags: ['meta'],
@@ -15,10 +16,6 @@ export const meta = {
 		type: 'object',
 		optional: false, nullable: false,
 		properties: {
-			driveCapacityPerLocalUserMb: {
-				type: 'number',
-				optional: false, nullable: false,
-			},
 			driveCapacityPerRemoteUserMb: {
 				type: 'number',
 				optional: false, nullable: false,
@@ -377,9 +374,6 @@ export default class extends Endpoint<typeof meta, typeof paramDef> {
 				repositoryUrl: instance.repositoryUrl,
 				feedbackUrl: instance.feedbackUrl,
 				disableRegistration: instance.disableRegistration,
-				disableLocalTimeline: instance.disableLocalTimeline,
-				disableGlobalTimeline: instance.disableGlobalTimeline,
-				driveCapacityPerLocalUserMb: instance.localDriveCapacityMb,
 				driveCapacityPerRemoteUserMb: instance.remoteDriveCapacityMb,
 				emailRequiredForSignup: instance.emailRequiredForSignup,
 				enableHcaptcha: instance.enableHcaptcha,
@@ -451,6 +445,7 @@ export default class extends Endpoint<typeof meta, typeof paramDef> {
 				deeplIsPro: instance.deeplIsPro,
 				enableIpLogging: instance.enableIpLogging,
 				enableActiveEmailValidation: instance.enableActiveEmailValidation,
+				baseRole: { ...DEFAULT_ROLE, ...instance.defaultRoleOverride },
 			};
 		});
 	}
diff --git a/packages/backend/src/server/api/endpoints/admin/moderators/add.ts b/packages/backend/src/server/api/endpoints/admin/moderators/add.ts
deleted file mode 100644
index 2fc5a35e8e..0000000000
--- a/packages/backend/src/server/api/endpoints/admin/moderators/add.ts
+++ /dev/null
@@ -1,49 +0,0 @@
-import { Inject, Injectable } from '@nestjs/common';
-import { Endpoint } from '@/server/api/endpoint-base.js';
-import type { UsersRepository } from '@/models/index.js';
-import { GlobalEventService } from '@/core/GlobalEventService.js';
-import { DI } from '@/di-symbols.js';
-
-export const meta = {
-	tags: ['admin'],
-
-	requireCredential: true,
-	requireAdmin: true,
-} as const;
-
-export const paramDef = {
-	type: 'object',
-	properties: {
-		userId: { type: 'string', format: 'misskey:id' },
-	},
-	required: ['userId'],
-} as const;
-
-// eslint-disable-next-line import/no-default-export
-@Injectable()
-export default class extends Endpoint<typeof meta, typeof paramDef> {
-	constructor(
-		@Inject(DI.usersRepository)
-		private usersRepository: UsersRepository,
-
-		private globalEventService: GlobalEventService,
-	) {
-		super(meta, paramDef, async (ps) => {
-			const user = await this.usersRepository.findOneBy({ id: ps.userId });
-
-			if (user == null) {
-				throw new Error('user not found');
-			}
-
-			if (user.isAdmin) {
-				throw new Error('cannot mark as moderator if admin user');
-			}
-
-			await this.usersRepository.update(user.id, {
-				isModerator: true,
-			});
-
-			this.globalEventService.publishInternalEvent('userChangeModeratorState', { id: user.id, isModerator: true });
-		});
-	}
-}
diff --git a/packages/backend/src/server/api/endpoints/admin/reset-password.ts b/packages/backend/src/server/api/endpoints/admin/reset-password.ts
index f7d27be9cb..d263f99f6e 100644
--- a/packages/backend/src/server/api/endpoints/admin/reset-password.ts
+++ b/packages/backend/src/server/api/endpoints/admin/reset-password.ts
@@ -50,8 +50,8 @@ export default class extends Endpoint<typeof meta, typeof paramDef> {
 				throw new Error('user not found');
 			}
 
-			if (user.isAdmin) {
-				throw new Error('cannot reset password of admin');
+			if (user.isRoot) {
+				throw new Error('cannot reset password of root');
 			}
 
 			const passwd = rndstr('a-zA-Z0-9', 8);
diff --git a/packages/backend/src/server/api/endpoints/admin/roles/assign.ts b/packages/backend/src/server/api/endpoints/admin/roles/assign.ts
new file mode 100644
index 0000000000..7bfb2f6625
--- /dev/null
+++ b/packages/backend/src/server/api/endpoints/admin/roles/assign.ts
@@ -0,0 +1,96 @@
+import { Inject, Injectable } from '@nestjs/common';
+import { Endpoint } from '@/server/api/endpoint-base.js';
+import type { RoleAssignmentsRepository, RolesRepository, UsersRepository } from '@/models/index.js';
+import { DI } from '@/di-symbols.js';
+import { ApiError } from '@/server/api/error.js';
+import { IdService } from '@/core/IdService.js';
+import { GlobalEventService } from '@/core/GlobalEventService.js';
+import { RoleService } from '@/core/RoleService.js';
+
+export const meta = {
+	tags: ['admin', 'role'],
+
+	requireCredential: true,
+	requireModerator: true,
+
+	errors: {
+		noSuchRole: {
+			message: 'No such role.',
+			code: 'NO_SUCH_ROLE',
+			id: '6503c040-6af4-4ed9-bf07-f2dd16678eab',
+		},
+
+		noSuchUser: {
+			message: 'No such user.',
+			code: 'NO_SUCH_USER',
+			id: '558ea170-f653-4700-94d0-5a818371d0df',
+		},
+
+		accessDenied: {
+			message: 'Only administrators can edit members of the role.',
+			code: 'ACCESS_DENIED',
+			id: '25b5bc31-dc79-4ebd-9bd2-c84978fd052c',
+		},
+	},
+} as const;
+
+export const paramDef = {
+	type: 'object',
+	properties: {
+		roleId: { type: 'string', format: 'misskey:id' },
+		userId: { type: 'string', format: 'misskey:id' },
+	},
+	required: [
+		'roleId',
+		'userId',
+	],
+} as const;
+
+// eslint-disable-next-line import/no-default-export
+@Injectable()
+export default class extends Endpoint<typeof meta, typeof paramDef> {
+	constructor(
+		@Inject(DI.usersRepository)
+		private usersRepository: UsersRepository,
+
+		@Inject(DI.rolesRepository)
+		private rolesRepository: RolesRepository,
+
+		@Inject(DI.roleAssignmentsRepository)
+		private roleAssignmentsRepository: RoleAssignmentsRepository,
+
+		private globalEventService: GlobalEventService,
+		private roleService: RoleService,
+		private idService: IdService,
+	) {
+		super(meta, paramDef, async (ps, me) => {
+			const role = await this.rolesRepository.findOneBy({ id: ps.roleId });
+			if (role == null) {
+				throw new ApiError(meta.errors.noSuchRole);
+			}
+
+			if (!role.canEditMembersByModerator && !(await this.roleService.isAdministrator(me))) {
+				throw new ApiError(meta.errors.accessDenied);
+			}
+
+			const user = await this.usersRepository.findOneBy({ id: ps.userId });
+			if (user == null) {
+				throw new ApiError(meta.errors.noSuchUser);
+			}
+
+			const date = new Date();
+			const created = await this.roleAssignmentsRepository.insert({
+				id: this.idService.genId(),
+				createdAt: date,
+				roleId: role.id,
+				userId: user.id,
+			}).then(x => this.roleAssignmentsRepository.findOneByOrFail(x.identifiers[0]));
+
+			this.rolesRepository.update(ps.roleId, {
+				lastUsedAt: new Date(),
+			});
+	
+			this.globalEventService.publishInternalEvent('userRoleAssigned', created);
+		});
+	}
+}
diff --git a/packages/backend/src/server/api/endpoints/admin/roles/create.ts b/packages/backend/src/server/api/endpoints/admin/roles/create.ts
new file mode 100644
index 0000000000..b04188fac6
--- /dev/null
+++ b/packages/backend/src/server/api/endpoints/admin/roles/create.ts
@@ -0,0 +1,75 @@
+import { Inject, Injectable } from '@nestjs/common';
+import { Endpoint } from '@/server/api/endpoint-base.js';
+import type { RolesRepository } from '@/models/index.js';
+import { GlobalEventService } from '@/core/GlobalEventService.js';
+import { DI } from '@/di-symbols.js';
+import { IdService } from '@/core/IdService.js';
+import { RoleEntityService } from '@/core/entities/RoleEntityService.js';
+
+export const meta = {
+	tags: ['admin', 'role'],
+
+	requireCredential: true,
+	requireAdmin: true,
+} as const;
+
+export const paramDef = {
+	type: 'object',
+	properties: {
+		name: { type: 'string' },
+		description: { type: 'string' },
+		color: { type: 'string', nullable: true },
+		isPublic: { type: 'boolean' },
+		isModerator: { type: 'boolean' },
+		isAdministrator: { type: 'boolean' },
+		canEditMembersByModerator: { type: 'boolean' },
+		options: {
+			type: 'object',
+		},
+	},
+	required: [
+		'name',
+		'description',
+		'color',
+		'isPublic',
+		'isModerator',
+		'isAdministrator',
+		'canEditMembersByModerator',
+		'options',
+	],
+} as const;
+
+// eslint-disable-next-line import/no-default-export
+@Injectable()
+export default class extends Endpoint<typeof meta, typeof paramDef> {
+	constructor(
+		@Inject(DI.rolesRepository)
+		private rolesRepository: RolesRepository,
+
+		private globalEventService: GlobalEventService,
+		private idService: IdService,
+		private roleEntityService: RoleEntityService,
+	) {
+		super(meta, paramDef, async (ps, me) => {
+			const date = new Date();
+			const created = await this.rolesRepository.insert({
+				id: this.idService.genId(),
+				createdAt: date,
+				updatedAt: date,
+				lastUsedAt: date,
+				name: ps.name,
+				description: ps.description,
+				color: ps.color,
+				isPublic: ps.isPublic,
+				isAdministrator: ps.isAdministrator,
+				isModerator: ps.isModerator,
+				canEditMembersByModerator: ps.canEditMembersByModerator,
+				options: ps.options,
+			}).then(x => this.rolesRepository.findOneByOrFail(x.identifiers[0]));
+	
+			this.globalEventService.publishInternalEvent('roleCreated', created);
+
+			return await this.roleEntityService.pack(created, me);
+		});
+	}
+}
diff --git a/packages/backend/src/server/api/endpoints/admin/roles/delete.ts b/packages/backend/src/server/api/endpoints/admin/roles/delete.ts
new file mode 100644
index 0000000000..b56ebdb3ee
--- /dev/null
+++ b/packages/backend/src/server/api/endpoints/admin/roles/delete.ts
@@ -0,0 +1,53 @@
+import { Inject, Injectable } from '@nestjs/common';
+import { Endpoint } from '@/server/api/endpoint-base.js';
+import type { RolesRepository } from '@/models/index.js';
+import { GlobalEventService } from '@/core/GlobalEventService.js';
+import { DI } from '@/di-symbols.js';
+import { ApiError } from '@/server/api/error.js';
+
+export const meta = {
+	tags: ['admin', 'role'],
+
+	requireCredential: true,
+	requireAdmin: true,
+
+	errors: {
+		noSuchRole: {
+			message: 'No such role.',
+			code: 'NO_SUCH_ROLE',
+			id: 'de0d6ecd-8e0a-4253-88ff-74bc89ae3d45',
+		},
+	},
+} as const;
+
+export const paramDef = {
+	type: 'object',
+	properties: {
+		roleId: { type: 'string', format: 'misskey:id' },
+	},
+	required: [
+		'roleId',
+	],
+} as const;
+
+// eslint-disable-next-line import/no-default-export
+@Injectable()
+export default class extends Endpoint<typeof meta, typeof paramDef> {
+	constructor(
+		@Inject(DI.rolesRepository)
+		private rolesRepository: RolesRepository,
+
+		private globalEventService: GlobalEventService,
+	) {
+		super(meta, paramDef, async (ps) => {
+			const role = await this.rolesRepository.findOneBy({ id: ps.roleId });
+			if (role == null) {
+				throw new ApiError(meta.errors.noSuchRole);
+			}
+			await this.rolesRepository.delete({
+				id: ps.roleId,
+			});
+			this.globalEventService.publishInternalEvent('roleDeleted', role);
+		});
+	}
+}
diff --git a/packages/backend/src/server/api/endpoints/admin/roles/list.ts b/packages/backend/src/server/api/endpoints/admin/roles/list.ts
new file mode 100644
index 0000000000..458a8d535b
--- /dev/null
+++ b/packages/backend/src/server/api/endpoints/admin/roles/list.ts
@@ -0,0 +1,39 @@
+import { Inject, Injectable } from '@nestjs/common';
+import { Endpoint } from '@/server/api/endpoint-base.js';
+import type { RolesRepository } from '@/models/index.js';
+import { DI } from '@/di-symbols.js';
+import { ApiError } from '@/server/api/error.js';
+import { RoleEntityService } from '@/core/entities/RoleEntityService.js';
+
+export const meta = {
+	tags: ['admin', 'role'],
+
+	requireCredential: true,
+	requireModerator: true,
+} as const;
+
+export const paramDef = {
+	type: 'object',
+	properties: {
+	},
+	required: [
+	],
+} as const;
+
+// eslint-disable-next-line import/no-default-export
+@Injectable()
+export default class extends Endpoint<typeof meta, typeof paramDef> {
+	constructor(
+		@Inject(DI.rolesRepository)
+		private rolesRepository: RolesRepository,
+
+		private roleEntityService: RoleEntityService,
+	) {
+		super(meta, paramDef, async (ps, me) => {
+			const roles = await this.rolesRepository.find({
+				order: { lastUsedAt: 'DESC' },
+			});
+			return await this.roleEntityService.packMany(roles, me, { detail: false });
+		});
+	}
+}
diff --git a/packages/backend/src/server/api/endpoints/admin/roles/show.ts b/packages/backend/src/server/api/endpoints/admin/roles/show.ts
new file mode 100644
index 0000000000..c83f96191d
--- /dev/null
+++ b/packages/backend/src/server/api/endpoints/admin/roles/show.ts
@@ -0,0 +1,50 @@
+import { Inject, Injectable } from '@nestjs/common';
+import { Endpoint } from '@/server/api/endpoint-base.js';
+import type { RolesRepository } from '@/models/index.js';
+import { DI } from '@/di-symbols.js';
+import { ApiError } from '@/server/api/error.js';
+import { RoleEntityService } from '@/core/entities/RoleEntityService.js';
+
+export const meta = {
+	tags: ['admin', 'role'],
+
+	requireCredential: true,
+	requireModerator: true,
+
+	errors: {
+		noSuchRole: {
+			message: 'No such role.',
+			code: 'NO_SUCH_ROLE',
+			id: '07dc7d34-c0d8-49b7-96c6-db3ce64ee0b3',
+		},
+	},
+} as const;
+
+export const paramDef = {
+	type: 'object',
+	properties: {
+		roleId: { type: 'string', format: 'misskey:id' },
+	},
+	required: [
+		'roleId',
+	],
+} as const;
+
+// eslint-disable-next-line import/no-default-export
+@Injectable()
+export default class extends Endpoint<typeof meta, typeof paramDef> {
+	constructor(
+		@Inject(DI.rolesRepository)
+		private rolesRepository: RolesRepository,
+
+		private roleEntityService: RoleEntityService,
+	) {
+		super(meta, paramDef, async (ps) => {
+			const role = await this.rolesRepository.findOneBy({ id: ps.roleId });
+			if (role == null) {
+				throw new ApiError(meta.errors.noSuchRole);
+			}
+			return await this.roleEntityService.pack(role);
+		});
+	}
+}
diff --git a/packages/backend/src/server/api/endpoints/admin/roles/unassign.ts b/packages/backend/src/server/api/endpoints/admin/roles/unassign.ts
new file mode 100644
index 0000000000..141cc5ee89
--- /dev/null
+++ b/packages/backend/src/server/api/endpoints/admin/roles/unassign.ts
@@ -0,0 +1,101 @@
+import { Inject, Injectable } from '@nestjs/common';
+import { Endpoint } from '@/server/api/endpoint-base.js';
+import type { RoleAssignmentsRepository, RolesRepository, UsersRepository } from '@/models/index.js';
+import { DI } from '@/di-symbols.js';
+import { ApiError } from '@/server/api/error.js';
+import { IdService } from '@/core/IdService.js';
+import { GlobalEventService } from '@/core/GlobalEventService.js';
+import { RoleService } from '@/core/RoleService.js';
+
+export const meta = {
+	tags: ['admin', 'role'],
+
+	requireCredential: true,
+	requireModerator: true,
+
+	errors: {
+		noSuchRole: {
+			message: 'No such role.',
+			code: 'NO_SUCH_ROLE',
+			id: '6e519036-a70d-4c76-b679-bc8fb18194e2',
+		},
+
+		noSuchUser: {
+			message: 'No such user.',
+			code: 'NO_SUCH_USER',
+			id: '2b730f78-1179-461b-88ad-d24c9af1a5ce',
+		},
+
+		notAssigned: {
+			message: 'Not assigned.',
+			code: 'NOT_ASSIGNED',
+			id: 'b9060ac7-5c94-4da4-9f55-2047c953df44',
+		},
+
+		accessDenied: {
+			message: 'Only administrators can edit members of the role.',
+			code: 'ACCESS_DENIED',
+			id: '24636eee-e8c1-493e-94b2-e16ad401e262',
+		},
+	},
+} as const;
+
+export const paramDef = {
+	type: 'object',
+	properties: {
+		roleId: { type: 'string', format: 'misskey:id' },
+		userId: { type: 'string', format: 'misskey:id' },
+	},
+	required: [
+		'roleId',
+		'userId',
+	],
+} as const;
+
+// eslint-disable-next-line import/no-default-export
+@Injectable()
+export default class extends Endpoint<typeof meta, typeof paramDef> {
+	constructor(
+		@Inject(DI.usersRepository)
+		private usersRepository: UsersRepository,
+
+		@Inject(DI.rolesRepository)
+		private rolesRepository: RolesRepository,
+
+		@Inject(DI.roleAssignmentsRepository)
+		private roleAssignmentsRepository: RoleAssignmentsRepository,
+
+		private globalEventService: GlobalEventService,
+		private roleService: RoleService,
+		private idService: IdService,
+	) {
+		super(meta, paramDef, async (ps, me) => {
+			const role = await this.rolesRepository.findOneBy({ id: ps.roleId });
+			if (role == null) {
+				throw new ApiError(meta.errors.noSuchRole);
+			}
+
+			if (!role.canEditMembersByModerator && !(await this.roleService.isAdministrator(me))) {
+				throw new ApiError(meta.errors.accessDenied);
+			}
+
+			const user = await this.usersRepository.findOneBy({ id: ps.userId });
+			if (user == null) {
+				throw new ApiError(meta.errors.noSuchUser);
+			}
+
+			const roleAssignment = await this.roleAssignmentsRepository.findOneBy({ userId: user.id, roleId: role.id });
+			if (roleAssignment == null) {
+				throw new ApiError(meta.errors.notAssigned);
+			}
+
+			await this.roleAssignmentsRepository.delete(roleAssignment.id);
+
+			this.rolesRepository.update(ps.roleId, {
+				lastUsedAt: new Date(),
+			});
+	
+			this.globalEventService.publishInternalEvent('userRoleUnassigned', roleAssignment);
+		});
+	}
+}
diff --git a/packages/backend/src/server/api/endpoints/admin/moderators/remove.ts b/packages/backend/src/server/api/endpoints/admin/roles/update-default-role-override.ts
index f0d7a3f12d..35da04efd2 100644
--- a/packages/backend/src/server/api/endpoints/admin/moderators/remove.ts
+++ b/packages/backend/src/server/api/endpoints/admin/roles/update-default-role-override.ts
@@ -1,11 +1,13 @@
 import { Inject, Injectable } from '@nestjs/common';
 import { Endpoint } from '@/server/api/endpoint-base.js';
-import type { UsersRepository } from '@/models/index.js';
+import type { RolesRepository } from '@/models/index.js';
 import { GlobalEventService } from '@/core/GlobalEventService.js';
 import { DI } from '@/di-symbols.js';
+import { ApiError } from '@/server/api/error.js';
+import { MetaService } from '@/core/MetaService.js';
 
 export const meta = {
-	tags: ['admin'],
+	tags: ['admin', 'role'],
 
 	requireCredential: true,
 	requireAdmin: true,
@@ -14,32 +16,27 @@ export const meta = {
 export const paramDef = {
 	type: 'object',
 	properties: {
-		userId: { type: 'string', format: 'misskey:id' },
+		options: {
+			type: 'object',
+		},
 	},
-	required: ['userId'],
+	required: [
+		'options',
+	],
 } as const;
 
 // eslint-disable-next-line import/no-default-export
 @Injectable()
 export default class extends Endpoint<typeof meta, typeof paramDef> {
 	constructor(
-		@Inject(DI.usersRepository)
-		private usersRepository: UsersRepository,
-
+		private metaService: MetaService,
 		private globalEventService: GlobalEventService,
 	) {
 		super(meta, paramDef, async (ps) => {
-			const user = await this.usersRepository.findOneBy({ id: ps.userId });
-
-			if (user == null) {
-				throw new Error('user not found');
-			}
-
-			await this.usersRepository.update(user.id, {
-				isModerator: false,
+			await this.metaService.update({
+				defaultRoleOverride: ps.options,
 			});
-
-			this.globalEventService.publishInternalEvent('userChangeModeratorState', { id: user.id, isModerator: false });
+			this.globalEventService.publishInternalEvent('defaultRoleOverrideUpdated', ps.options);
 		});
 	}
 }
diff --git a/packages/backend/src/server/api/endpoints/admin/roles/update.ts b/packages/backend/src/server/api/endpoints/admin/roles/update.ts
new file mode 100644
index 0000000000..7d97d68e14
--- /dev/null
+++ b/packages/backend/src/server/api/endpoints/admin/roles/update.ts
@@ -0,0 +1,82 @@
+import { Inject, Injectable } from '@nestjs/common';
+import { Endpoint } from '@/server/api/endpoint-base.js';
+import type { RolesRepository } from '@/models/index.js';
+import { GlobalEventService } from '@/core/GlobalEventService.js';
+import { DI } from '@/di-symbols.js';
+import { ApiError } from '@/server/api/error.js';
+
+export const meta = {
+	tags: ['admin', 'role'],
+
+	requireCredential: true,
+	requireAdmin: true,
+
+	errors: {
+		noSuchRole: {
+			message: 'No such role.',
+			code: 'NO_SUCH_ROLE',
+			id: 'cd23ef55-09ad-428a-ac61-95a45e124b32',
+		},
+	},
+} as const;
+
+export const paramDef = {
+	type: 'object',
+	properties: {
+		roleId: { type: 'string', format: 'misskey:id' },
+		name: { type: 'string' },
+		description: { type: 'string' },
+		color: { type: 'string', nullable: true },
+		isPublic: { type: 'boolean' },
+		isModerator: { type: 'boolean' },
+		isAdministrator: { type: 'boolean' },
+		canEditMembersByModerator: { type: 'boolean' },
+		options: {
+			type: 'object',
+		},
+	},
+	required: [
+		'roleId',
+		'name',
+		'description',
+		'color',
+		'isPublic',
+		'isModerator',
+		'isAdministrator',
+		'canEditMembersByModerator',
+		'options',
+	],
+} as const;
+
+// eslint-disable-next-line import/no-default-export
+@Injectable()
+export default class extends Endpoint<typeof meta, typeof paramDef> {
+	constructor(
+		@Inject(DI.rolesRepository)
+		private rolesRepository: RolesRepository,
+
+		private globalEventService: GlobalEventService,
+	) {
+		super(meta, paramDef, async (ps) => {
+			const role = await this.rolesRepository.findOneBy({ id: ps.roleId });
+			if (role == null) {
+				throw new ApiError(meta.errors.noSuchRole);
+			}
+
+			const date = new Date();
+			await this.rolesRepository.update(ps.roleId, {
+				updatedAt: date,
+				name: ps.name,
+				description: ps.description,
+				color: ps.color,
+				isPublic: ps.isPublic,
+				isModerator: ps.isModerator,
+				isAdministrator: ps.isAdministrator,
+				canEditMembersByModerator: ps.canEditMembersByModerator,
+				options: ps.options,
+			});
+			const updated = await this.rolesRepository.findOneByOrFail({ id: ps.roleId });
+			this.globalEventService.publishInternalEvent('roleUpdated', updated);
+		});
+	}
+}
diff --git a/packages/backend/src/server/api/endpoints/admin/show-user.ts b/packages/backend/src/server/api/endpoints/admin/show-user.ts
index e4031cf960..3f4ec299af 100644
--- a/packages/backend/src/server/api/endpoints/admin/show-user.ts
+++ b/packages/backend/src/server/api/endpoints/admin/show-user.ts
@@ -2,6 +2,8 @@ import { Inject, Injectable } from '@nestjs/common';
 import type { UsersRepository, SigninsRepository, UserProfilesRepository } from '@/models/index.js';
 import { Endpoint } from '@/server/api/endpoint-base.js';
 import { DI } from '@/di-symbols.js';
+import { RoleService } from '@/core/RoleService.js';
+import { RoleEntityService } from '@/core/entities/RoleEntityService.js';
 
 export const meta = {
 	tags: ['admin'],
@@ -35,6 +37,9 @@ export default class extends Endpoint<typeof meta, typeof paramDef> {
 
 		@Inject(DI.signinsRepository)
 		private signinsRepository: SigninsRepository,
+
+		private roleService: RoleService,
+		private roleEntityService: RoleEntityService,
 	) {
 		super(meta, paramDef, async (ps, me) => {
 			const [user, profile] = await Promise.all([
@@ -46,15 +51,16 @@ export default class extends Endpoint<typeof meta, typeof paramDef> {
 				throw new Error('user not found');
 			}
 
+			const isModerator = await this.roleService.isModerator(user);
+			const isSilenced = !(await this.roleService.getUserRoleOptions(user.id)).canPublicNote;
+
 			const _me = await this.usersRepository.findOneByOrFail({ id: me.id });
-			if ((_me.isModerator && !_me.isAdmin) && user.isAdmin) {
+			if (!await this.roleService.isAdministrator(_me) && await this.roleService.isAdministrator(user)) {
 				throw new Error('cannot show info of admin');
 			}
 
-			if (!_me.isAdmin) {
+			if (!await this.roleService.isAdministrator(_me)) {
 				return {
-					isModerator: user.isModerator,
-					isSilenced: user.isSilenced,
 					isSuspended: user.isSuspended,
 				};
 			}
@@ -66,6 +72,8 @@ export default class extends Endpoint<typeof meta, typeof paramDef> {
 
 			const signins = await this.signinsRepository.findBy({ userId: user.id });
 
+			const roles = await this.roleService.getUserRoles(user.id);
+
 			return {
 				email: profile.email,
 				emailVerified: profile.emailVerified,
@@ -80,12 +88,13 @@ export default class extends Endpoint<typeof meta, typeof paramDef> {
 				mutedWords: profile.mutedWords,
 				mutedInstances: profile.mutedInstances,
 				mutingNotificationTypes: profile.mutingNotificationTypes,
-				isModerator: user.isModerator,
-				isSilenced: user.isSilenced,
+				isModerator: isModerator,
+				isSilenced: isSilenced,
 				isSuspended: user.isSuspended,
 				lastActiveDate: user.lastActiveDate,
 				moderationNote: profile.moderationNote,
 				signins,
+				roles: await this.roleEntityService.packMany(roles, me, { detail: false }),
 			};
 		});
 	}
diff --git a/packages/backend/src/server/api/endpoints/admin/show-users.ts b/packages/backend/src/server/api/endpoints/admin/show-users.ts
index 5a67cf522a..426973f282 100644
--- a/packages/backend/src/server/api/endpoints/admin/show-users.ts
+++ b/packages/backend/src/server/api/endpoints/admin/show-users.ts
@@ -4,6 +4,7 @@ import { Endpoint } from '@/server/api/endpoint-base.js';
 import { DI } from '@/di-symbols.js';
 import { UserEntityService } from '@/core/entities/UserEntityService.js';
 import { sqlLikeEscape } from '@/misc/sql-like-escape.js';
+import { RoleService } from '@/core/RoleService.js';
 
 export const meta = {
 	tags: ['admin'],
@@ -28,7 +29,7 @@ export const paramDef = {
 		limit: { type: 'integer', minimum: 1, maximum: 100, default: 10 },
 		offset: { type: 'integer', default: 0 },
 		sort: { type: 'string', enum: ['+follower', '-follower', '+createdAt', '-createdAt', '+updatedAt', '-updatedAt', '+lastActiveDate', '-lastActiveDate'] },
-		state: { type: 'string', enum: ['all', 'alive', 'available', 'admin', 'moderator', 'adminOrModerator', 'silenced', 'suspended'], default: 'all' },
+		state: { type: 'string', enum: ['all', 'alive', 'available', 'admin', 'moderator', 'adminOrModerator', 'suspended'], default: 'all' },
 		origin: { type: 'string', enum: ['combined', 'local', 'remote'], default: 'combined' },
 		username: { type: 'string', nullable: true, default: null },
 		hostname: {
@@ -49,18 +50,33 @@ export default class extends Endpoint<typeof meta, typeof paramDef> {
 		private usersRepository: UsersRepository,
 
 		private userEntityService: UserEntityService,
+		private roleService: RoleService,
 	) {
 		super(meta, paramDef, async (ps, me) => {
 			const query = this.usersRepository.createQueryBuilder('user');
 
 			switch (ps.state) {
 				case 'available': query.where('user.isSuspended = FALSE'); break;
-				case 'admin': query.where('user.isAdmin = TRUE'); break;
-				case 'moderator': query.where('user.isModerator = TRUE'); break;
-				case 'adminOrModerator': query.where('user.isAdmin = TRUE OR user.isModerator = TRUE'); break;
 				case 'alive': query.where('user.updatedAt > :date', { date: new Date(Date.now() - 1000 * 60 * 60 * 24 * 5) }); break;
-				case 'silenced': query.where('user.isSilenced = TRUE'); break;
 				case 'suspended': query.where('user.isSuspended = TRUE'); break;
+				case 'admin': {
+					const adminIds = await this.roleService.getAdministratorIds();
+					if (adminIds.length === 0) return [];
+					query.where('user.id IN (:...adminIds)', { adminIds: adminIds });
+					break;
+				}
+				case 'moderator': {
+					const moderatorIds = await this.roleService.getModeratorIds(false);
+					if (moderatorIds.length === 0) return [];
+					query.where('user.id IN (:...moderatorIds)', { moderatorIds: moderatorIds });
+					break;
+				}
+				case 'adminOrModerator': {
+					const adminOrModeratorIds = await this.roleService.getModeratorIds();
+					if (adminOrModeratorIds.length === 0) return [];
+					query.where('user.id IN (:...adminOrModeratorIds)', { adminOrModeratorIds: adminOrModeratorIds });
+					break;
+				}
 			}
 
 			switch (ps.origin) {
diff --git a/packages/backend/src/server/api/endpoints/admin/silence-user.ts b/packages/backend/src/server/api/endpoints/admin/silence-user.ts
deleted file mode 100644
index b9dbd211e0..0000000000
--- a/packages/backend/src/server/api/endpoints/admin/silence-user.ts
+++ /dev/null
@@ -1,55 +0,0 @@
-import { Inject, Injectable } from '@nestjs/common';
-import { Endpoint } from '@/server/api/endpoint-base.js';
-import { ModerationLogService } from '@/core/ModerationLogService.js';
-import type { UsersRepository } from '@/models/index.js';
-import { GlobalEventService } from '@/core/GlobalEventService.js';
-import { DI } from '@/di-symbols.js';
-
-export const meta = {
-	tags: ['admin'],
-
-	requireCredential: true,
-	requireModerator: true,
-} as const;
-
-export const paramDef = {
-	type: 'object',
-	properties: {
-		userId: { type: 'string', format: 'misskey:id' },
-	},
-	required: ['userId'],
-} as const;
-
-// eslint-disable-next-line import/no-default-export
-@Injectable()
-export default class extends Endpoint<typeof meta, typeof paramDef> {
-	constructor(
-		@Inject(DI.usersRepository)
-		private usersRepository: UsersRepository,
-
-		private moderationLogService: ModerationLogService,
-		private globalEventService: GlobalEventService,
-	) {
-		super(meta, paramDef, async (ps, me) => {
-			const user = await this.usersRepository.findOneBy({ id: ps.userId });
-
-			if (user == null) {
-				throw new Error('user not found');
-			}
-
-			if (user.isAdmin) {
-				throw new Error('cannot silence admin');
-			}
-
-			await this.usersRepository.update(user.id, {
-				isSilenced: true,
-			});
-
-			this.globalEventService.publishInternalEvent('userChangeSilencedState', { id: user.id, isSilenced: true });
-
-			this.moderationLogService.insertModerationLog(me, 'silence', {
-				targetId: user.id,
-			});
-		});
-	}
-}
diff --git a/packages/backend/src/server/api/endpoints/admin/suspend-user.ts b/packages/backend/src/server/api/endpoints/admin/suspend-user.ts
index 9fc1391570..3ad6c7c484 100644
--- a/packages/backend/src/server/api/endpoints/admin/suspend-user.ts
+++ b/packages/backend/src/server/api/endpoints/admin/suspend-user.ts
@@ -9,6 +9,7 @@ import { UserFollowingService } from '@/core/UserFollowingService.js';
 import { DI } from '@/di-symbols.js';
 import { UserEntityService } from '@/core/entities/UserEntityService.js';
 import { bindThis } from '@/decorators.js';
+import { RoleService } from '@/core/RoleService.js';
 
 export const meta = {
 	tags: ['admin'],
@@ -41,6 +42,7 @@ export default class extends Endpoint<typeof meta, typeof paramDef> {
 		private userEntityService: UserEntityService,
 		private userFollowingService: UserFollowingService,
 		private userSuspendService: UserSuspendService,
+		private roleService: RoleService,
 		private moderationLogService: ModerationLogService,
 		private globalEventService: GlobalEventService,
 	) {
@@ -51,12 +53,8 @@ export default class extends Endpoint<typeof meta, typeof paramDef> {
 				throw new Error('user not found');
 			}
 
-			if (user.isAdmin) {
-				throw new Error('cannot suspend admin');
-			}
-
-			if (user.isModerator) {
-				throw new Error('cannot suspend moderator');
+			if (await this.roleService.isModerator(user)) {
+				throw new Error('cannot suspend moderator account');
 			}
 
 			await this.usersRepository.update(user.id, {
diff --git a/packages/backend/src/server/api/endpoints/admin/unsilence-user.ts b/packages/backend/src/server/api/endpoints/admin/unsilence-user.ts
deleted file mode 100644
index 3a9d410de0..0000000000
--- a/packages/backend/src/server/api/endpoints/admin/unsilence-user.ts
+++ /dev/null
@@ -1,51 +0,0 @@
-import { Inject, Injectable } from '@nestjs/common';
-import { Endpoint } from '@/server/api/endpoint-base.js';
-import type { UsersRepository } from '@/models/index.js';
-import { GlobalEventService } from '@/core/GlobalEventService.js';
-import { ModerationLogService } from '@/core/ModerationLogService.js';
-import { DI } from '@/di-symbols.js';
-
-export const meta = {
-	tags: ['admin'],
-
-	requireCredential: true,
-	requireModerator: true,
-} as const;
-
-export const paramDef = {
-	type: 'object',
-	properties: {
-		userId: { type: 'string', format: 'misskey:id' },
-	},
-	required: ['userId'],
-} as const;
-
-// eslint-disable-next-line import/no-default-export
-@Injectable()
-export default class extends Endpoint<typeof meta, typeof paramDef> {
-	constructor(
-		@Inject(DI.usersRepository)
-		private usersRepository: UsersRepository,
-
-		private moderationLogService: ModerationLogService,
-		private globalEventService: GlobalEventService,
-	) {
-		super(meta, paramDef, async (ps, me) => {
-			const user = await this.usersRepository.findOneBy({ id: ps.userId });
-
-			if (user == null) {
-				throw new Error('user not found');
-			}
-
-			await this.usersRepository.update(user.id, {
-				isSilenced: false,
-			});
-
-			this.globalEventService.publishInternalEvent('userChangeSilencedState', { id: user.id, isSilenced: false });
-
-			this.moderationLogService.insertModerationLog(me, 'unsilence', {
-				targetId: user.id,
-			});
-		});
-	}
-}
diff --git a/packages/backend/src/server/api/endpoints/admin/update-meta.ts b/packages/backend/src/server/api/endpoints/admin/update-meta.ts
index 795b8460f3..c766494e6b 100644
--- a/packages/backend/src/server/api/endpoints/admin/update-meta.ts
+++ b/packages/backend/src/server/api/endpoints/admin/update-meta.ts
@@ -19,8 +19,6 @@ export const paramDef = {
 	type: 'object',
 	properties: {
 		disableRegistration: { type: 'boolean', nullable: true },
-		disableLocalTimeline: { type: 'boolean', nullable: true },
-		disableGlobalTimeline: { type: 'boolean', nullable: true },
 		useStarForReactionFallback: { type: 'boolean', nullable: true },
 		pinnedUsers: { type: 'array', nullable: true, items: {
 			type: 'string',
@@ -42,7 +40,6 @@ export const paramDef = {
 		description: { type: 'string', nullable: true },
 		defaultLightTheme: { type: 'string', nullable: true },
 		defaultDarkTheme: { type: 'string', nullable: true },
-		localDriveCapacityMb: { type: 'integer' },
 		remoteDriveCapacityMb: { type: 'integer' },
 		cacheRemoteFiles: { type: 'boolean' },
 		emailRequiredForSignup: { type: 'boolean' },
@@ -130,14 +127,6 @@ export default class extends Endpoint<typeof meta, typeof paramDef> {
 				set.disableRegistration = ps.disableRegistration;
 			}
 
-			if (typeof ps.disableLocalTimeline === 'boolean') {
-				set.disableLocalTimeline = ps.disableLocalTimeline;
-			}
-
-			if (typeof ps.disableGlobalTimeline === 'boolean') {
-				set.disableGlobalTimeline = ps.disableGlobalTimeline;
-			}
-
 			if (typeof ps.useStarForReactionFallback === 'boolean') {
 				set.useStarForReactionFallback = ps.useStarForReactionFallback;
 			}
@@ -194,10 +183,6 @@ export default class extends Endpoint<typeof meta, typeof paramDef> {
 				set.defaultDarkTheme = ps.defaultDarkTheme;
 			}
 
-			if (ps.localDriveCapacityMb !== undefined) {
-				set.localDriveCapacityMb = ps.localDriveCapacityMb;
-			}
-
 			if (ps.remoteDriveCapacityMb !== undefined) {
 				set.remoteDriveCapacityMb = ps.remoteDriveCapacityMb;
 			}
diff --git a/packages/backend/src/server/api/endpoints/antennas/create.ts b/packages/backend/src/server/api/endpoints/antennas/create.ts
index 2378660ec8..08625250c8 100644
--- a/packages/backend/src/server/api/endpoints/antennas/create.ts
+++ b/packages/backend/src/server/api/endpoints/antennas/create.ts
@@ -5,6 +5,7 @@ import type { UserListsRepository, UserGroupJoiningsRepository, AntennasReposito
 import { GlobalEventService } from '@/core/GlobalEventService.js';
 import { AntennaEntityService } from '@/core/entities/AntennaEntityService.js';
 import { DI } from '@/di-symbols.js';
+import { RoleService } from '@/core/RoleService.js';
 import { ApiError } from '../../error.js';
 
 export const meta = {
@@ -83,6 +84,7 @@ export default class extends Endpoint<typeof meta, typeof paramDef> {
 		private userGroupJoiningsRepository: UserGroupJoiningsRepository,
 
 		private antennaEntityService: AntennaEntityService,
+		private roleService: RoleService,
 		private idService: IdService,
 		private globalEventService: GlobalEventService,
 	) {
@@ -90,7 +92,7 @@ export default class extends Endpoint<typeof meta, typeof paramDef> {
 			const currentAntennasCount = await this.antennasRepository.countBy({
 				userId: me.id,
 			});
-			if (currentAntennasCount > 5) {
+			if (currentAntennasCount > (await this.roleService.getUserRoleOptions(me.id)).antennaLimit) {
 				throw new ApiError(meta.errors.tooManyAntennas);
 			}
 
diff --git a/packages/backend/src/server/api/endpoints/drive.ts b/packages/backend/src/server/api/endpoints/drive.ts
index 6f40225f15..2a06792dcf 100644
--- a/packages/backend/src/server/api/endpoints/drive.ts
+++ b/packages/backend/src/server/api/endpoints/drive.ts
@@ -2,6 +2,7 @@ import { Inject, Injectable } from '@nestjs/common';
 import { Endpoint } from '@/server/api/endpoint-base.js';
 import { MetaService } from '@/core/MetaService.js';
 import { DriveFileEntityService } from '@/core/entities/DriveFileEntityService.js';
+import { RoleService } from '@/core/RoleService.js';
 
 export const meta = {
 	tags: ['drive', 'account'],
@@ -38,6 +39,7 @@ export default class extends Endpoint<typeof meta, typeof paramDef> {
 	constructor(
 		private metaService: MetaService,
 		private driveFileEntityService: DriveFileEntityService,
+		private roleService: RoleService,
 	) {
 		super(meta, paramDef, async (ps, me) => {
 			const instance = await this.metaService.fetch(true);
@@ -45,8 +47,10 @@ export default class extends Endpoint<typeof meta, typeof paramDef> {
 			// Calculate drive usage
 			const usage = await this.driveFileEntityService.calcDriveUsageOf(me.id);
 
+			const myRole = await this.roleService.getUserRoleOptions(me.id);
+
 			return {
-				capacity: 1024 * 1024 * (me.driveCapacityOverrideMb ?? instance.localDriveCapacityMb),
+				capacity: 1024 * 1024 * myRole.driveCapacityMb,
 				usage: usage,
 			};
 		});
diff --git a/packages/backend/src/server/api/endpoints/drive/files/delete.ts b/packages/backend/src/server/api/endpoints/drive/files/delete.ts
index be7b050907..2ced97ee02 100644
--- a/packages/backend/src/server/api/endpoints/drive/files/delete.ts
+++ b/packages/backend/src/server/api/endpoints/drive/files/delete.ts
@@ -4,6 +4,7 @@ import type { DriveFilesRepository } from '@/models/index.js';
 import { DriveService } from '@/core/DriveService.js';
 import { GlobalEventService } from '@/core/GlobalEventService.js';
 import { DI } from '@/di-symbols.js';
+import { RoleService } from '@/core/RoleService.js';
 import { ApiError } from '../../../error.js';
 
 export const meta = {
@@ -46,6 +47,7 @@ export default class extends Endpoint<typeof meta, typeof paramDef> {
 		private driveFilesRepository: DriveFilesRepository,
 
 		private driveService: DriveService,
+		private roleService: RoleService,
 		private globalEventService: GlobalEventService,
 	) {
 		super(meta, paramDef, async (ps, me) => {
@@ -55,7 +57,7 @@ export default class extends Endpoint<typeof meta, typeof paramDef> {
 				throw new ApiError(meta.errors.noSuchFile);
 			}
 
-			if ((!me.isAdmin && !me.isModerator) && (file.userId !== me.id)) {
+			if (!await this.roleService.isModerator(me) && (file.userId !== me.id)) {
 				throw new ApiError(meta.errors.accessDenied);
 			}
 
diff --git a/packages/backend/src/server/api/endpoints/drive/files/show.ts b/packages/backend/src/server/api/endpoints/drive/files/show.ts
index 474d599cb6..e0a07a3640 100644
--- a/packages/backend/src/server/api/endpoints/drive/files/show.ts
+++ b/packages/backend/src/server/api/endpoints/drive/files/show.ts
@@ -4,6 +4,7 @@ import type { DriveFilesRepository } from '@/models/index.js';
 import { Endpoint } from '@/server/api/endpoint-base.js';
 import { DriveFileEntityService } from '@/core/entities/DriveFileEntityService.js';
 import { DI } from '@/di-symbols.js';
+import { RoleService } from '@/core/RoleService.js';
 import { ApiError } from '../../../error.js';
 
 export const meta = {
@@ -62,6 +63,7 @@ export default class extends Endpoint<typeof meta, typeof paramDef> {
 		private driveFilesRepository: DriveFilesRepository,
 
 		private driveFileEntityService: DriveFileEntityService,
+		private roleService: RoleService,
 	) {
 		super(meta, paramDef, async (ps, me) => {
 			let file: DriveFile | null = null;
@@ -84,7 +86,7 @@ export default class extends Endpoint<typeof meta, typeof paramDef> {
 				throw new ApiError(meta.errors.noSuchFile);
 			}
 
-			if ((!me.isAdmin && !me.isModerator) && (file.userId !== me.id)) {
+			if (!await this.roleService.isModerator(me) && (file.userId !== me.id)) {
 				throw new ApiError(meta.errors.accessDenied);
 			}
 
diff --git a/packages/backend/src/server/api/endpoints/drive/files/update.ts b/packages/backend/src/server/api/endpoints/drive/files/update.ts
index 9e2c767277..0fe57de6a8 100644
--- a/packages/backend/src/server/api/endpoints/drive/files/update.ts
+++ b/packages/backend/src/server/api/endpoints/drive/files/update.ts
@@ -5,6 +5,7 @@ import { Endpoint } from '@/server/api/endpoint-base.js';
 import { DriveFileEntityService } from '@/core/entities/DriveFileEntityService.js';
 import { GlobalEventService } from '@/core/GlobalEventService.js';
 import { DI } from '@/di-symbols.js';
+import { RoleService } from '@/core/RoleService.js';
 import { ApiError } from '../../../error.js';
 
 export const meta = {
@@ -72,6 +73,7 @@ export default class extends Endpoint<typeof meta, typeof paramDef> {
 		private driveFoldersRepository: DriveFoldersRepository,
 
 		private driveFileEntityService: DriveFileEntityService,
+		private roleService: RoleService,
 		private globalEventService: GlobalEventService,
 	) {
 		super(meta, paramDef, async (ps, me) => {
@@ -81,7 +83,7 @@ export default class extends Endpoint<typeof meta, typeof paramDef> {
 				throw new ApiError(meta.errors.noSuchFile);
 			}
 
-			if ((!me.isAdmin && !me.isModerator) && (file.userId !== me.id)) {
+			if (!await this.roleService.isModerator(me) && (file.userId !== me.id)) {
 				throw new ApiError(meta.errors.accessDenied);
 			}
 
diff --git a/packages/backend/src/server/api/endpoints/meta.ts b/packages/backend/src/server/api/endpoints/meta.ts
index c44d63d64b..f87fca63e3 100644
--- a/packages/backend/src/server/api/endpoints/meta.ts
+++ b/packages/backend/src/server/api/endpoints/meta.ts
@@ -7,6 +7,7 @@ import { UserEntityService } from '@/core/entities/UserEntityService.js';
 import { MetaService } from '@/core/MetaService.js';
 import type { Config } from '@/config.js';
 import { DI } from '@/di-symbols.js';
+import { DEFAULT_ROLE } from '@/core/RoleService.js';
 
 export const meta = {
 	tags: ['meta'],
@@ -77,18 +78,6 @@ export const meta = {
 				type: 'boolean',
 				optional: false, nullable: false,
 			},
-			disableLocalTimeline: {
-				type: 'boolean',
-				optional: false, nullable: false,
-			},
-			disableGlobalTimeline: {
-				type: 'boolean',
-				optional: false, nullable: false,
-			},
-			driveCapacityPerLocalUserMb: {
-				type: 'number',
-				optional: false, nullable: false,
-			},
 			driveCapacityPerRemoteUserMb: {
 				type: 'number',
 				optional: false, nullable: false,
@@ -314,9 +303,6 @@ export default class extends Endpoint<typeof meta, typeof paramDef> {
 				repositoryUrl: instance.repositoryUrl,
 				feedbackUrl: instance.feedbackUrl,
 				disableRegistration: instance.disableRegistration,
-				disableLocalTimeline: instance.disableLocalTimeline,
-				disableGlobalTimeline: instance.disableGlobalTimeline,
-				driveCapacityPerLocalUserMb: instance.localDriveCapacityMb,
 				driveCapacityPerRemoteUserMb: instance.remoteDriveCapacityMb,
 				emailRequiredForSignup: instance.emailRequiredForSignup,
 				enableHcaptcha: instance.enableHcaptcha,
@@ -353,6 +339,8 @@ export default class extends Endpoint<typeof meta, typeof paramDef> {
 
 				translatorAvailable: instance.deeplAuthKey != null,
 
+				baseRole: { ...DEFAULT_ROLE, ...instance.defaultRoleOverride },
+
 				...(ps.detail ? {
 					pinnedPages: instance.pinnedPages,
 					pinnedClipId: instance.pinnedClipId,
@@ -369,8 +357,6 @@ export default class extends Endpoint<typeof meta, typeof paramDef> {
 				response.proxyAccountName = proxyAccount ? proxyAccount.username : null;
 				response.features = {
 					registration: !instance.disableRegistration,
-					localTimeLine: !instance.disableLocalTimeline,
-					globalTimeLine: !instance.disableGlobalTimeline,
 					emailRequiredForSignup: instance.emailRequiredForSignup,
 					elasticsearch: this.config.elasticsearch ? true : false,
 					hcaptcha: instance.enableHcaptcha,
diff --git a/packages/backend/src/server/api/endpoints/notes/delete.ts b/packages/backend/src/server/api/endpoints/notes/delete.ts
index 3c6e7bf768..16c4c01387 100644
--- a/packages/backend/src/server/api/endpoints/notes/delete.ts
+++ b/packages/backend/src/server/api/endpoints/notes/delete.ts
@@ -4,8 +4,9 @@ import type { UsersRepository } from '@/models/index.js';
 import { Endpoint } from '@/server/api/endpoint-base.js';
 import { NoteDeleteService } from '@/core/NoteDeleteService.js';
 import { DI } from '@/di-symbols.js';
-import { ApiError } from '../../error.js';
 import { GetterService } from '@/server/api/GetterService.js';
+import { RoleService } from '@/core/RoleService.js';
+import { ApiError } from '../../error.js';
 
 export const meta = {
 	tags: ['notes'],
@@ -51,6 +52,7 @@ export default class extends Endpoint<typeof meta, typeof paramDef> {
 		private usersRepository: UsersRepository,
 
 		private getterService: GetterService,
+		private roleService: RoleService,
 		private noteDeleteService: NoteDeleteService,
 	) {
 		super(meta, paramDef, async (ps, me) => {
@@ -59,7 +61,7 @@ export default class extends Endpoint<typeof meta, typeof paramDef> {
 				throw err;
 			});
 
-			if ((!me.isAdmin && !me.isModerator) && (note.userId !== me.id)) {
+			if (!await this.roleService.isModerator(me) && (note.userId !== me.id)) {
 				throw new ApiError(meta.errors.accessDenied);
 			}
 
diff --git a/packages/backend/src/server/api/endpoints/notes/global-timeline.ts b/packages/backend/src/server/api/endpoints/notes/global-timeline.ts
index b6eaccb5ac..081563493d 100644
--- a/packages/backend/src/server/api/endpoints/notes/global-timeline.ts
+++ b/packages/backend/src/server/api/endpoints/notes/global-timeline.ts
@@ -6,6 +6,7 @@ import { NoteEntityService } from '@/core/entities/NoteEntityService.js';
 import { MetaService } from '@/core/MetaService.js';
 import ActiveUsersChart from '@/core/chart/charts/active-users.js';
 import { DI } from '@/di-symbols.js';
+import { RoleService } from '@/core/RoleService.js';
 import { ApiError } from '../../error.js';
 
 export const meta = {
@@ -57,14 +58,13 @@ export default class extends Endpoint<typeof meta, typeof paramDef> {
 		private noteEntityService: NoteEntityService,
 		private queryService: QueryService,
 		private metaService: MetaService,
+		private roleService: RoleService,
 		private activeUsersChart: ActiveUsersChart,
 	) {
 		super(meta, paramDef, async (ps, me) => {
-			const m = await this.metaService.fetch();
-			if (m.disableGlobalTimeline) {
-				if (me == null || (!me.isAdmin && !me.isModerator)) {
-					throw new ApiError(meta.errors.gtlDisabled);
-				}
+			const role = await this.roleService.getUserRoleOptions(me ? me.id : null);
+			if (!role.gtlAvailable) {
+				throw new ApiError(meta.errors.gtlDisabled);
 			}
 
 			//#region Construct query
diff --git a/packages/backend/src/server/api/endpoints/notes/hybrid-timeline.ts b/packages/backend/src/server/api/endpoints/notes/hybrid-timeline.ts
index 58bbf223a1..b2c504448e 100644
--- a/packages/backend/src/server/api/endpoints/notes/hybrid-timeline.ts
+++ b/packages/backend/src/server/api/endpoints/notes/hybrid-timeline.ts
@@ -7,6 +7,7 @@ import ActiveUsersChart from '@/core/chart/charts/active-users.js';
 import { MetaService } from '@/core/MetaService.js';
 import { NoteEntityService } from '@/core/entities/NoteEntityService.js';
 import { DI } from '@/di-symbols.js';
+import { RoleService } from '@/core/RoleService.js';
 import { ApiError } from '../../error.js';
 
 export const meta = {
@@ -66,11 +67,12 @@ export default class extends Endpoint<typeof meta, typeof paramDef> {
 		private noteEntityService: NoteEntityService,
 		private queryService: QueryService,
 		private metaService: MetaService,
+		private roleService: RoleService,
 		private activeUsersChart: ActiveUsersChart,
 	) {
 		super(meta, paramDef, async (ps, me) => {
-			const m = await this.metaService.fetch();
-			if (m.disableLocalTimeline && (!me.isAdmin && !me.isModerator)) {
+			const role = await this.roleService.getUserRoleOptions(me.id);
+			if (!role.ltlAvailable) {
 				throw new ApiError(meta.errors.stlDisabled);
 			}
 
diff --git a/packages/backend/src/server/api/endpoints/notes/local-timeline.ts b/packages/backend/src/server/api/endpoints/notes/local-timeline.ts
index d3594814b0..6361edc310 100644
--- a/packages/backend/src/server/api/endpoints/notes/local-timeline.ts
+++ b/packages/backend/src/server/api/endpoints/notes/local-timeline.ts
@@ -7,6 +7,7 @@ import { NoteEntityService } from '@/core/entities/NoteEntityService.js';
 import { MetaService } from '@/core/MetaService.js';
 import ActiveUsersChart from '@/core/chart/charts/active-users.js';
 import { DI } from '@/di-symbols.js';
+import { RoleService } from '@/core/RoleService.js';
 import { ApiError } from '../../error.js';
 
 export const meta = {
@@ -62,14 +63,13 @@ export default class extends Endpoint<typeof meta, typeof paramDef> {
 		private noteEntityService: NoteEntityService,
 		private queryService: QueryService,
 		private metaService: MetaService,
+		private roleService: RoleService,
 		private activeUsersChart: ActiveUsersChart,
 	) {
 		super(meta, paramDef, async (ps, me) => {
-			const m = await this.metaService.fetch();
-			if (m.disableLocalTimeline) {
-				if (me == null || (!me.isAdmin && !me.isModerator)) {
-					throw new ApiError(meta.errors.ltlDisabled);
-				}
+			const role = await this.roleService.getUserRoleOptions(me ? me.id : null);
+			if (!role.ltlAvailable) {
+				throw new ApiError(meta.errors.ltlDisabled);
 			}
 
 			//#region Construct query
diff --git a/packages/backend/src/server/api/endpoints/users.ts b/packages/backend/src/server/api/endpoints/users.ts
index b015129a7a..8becb68a34 100644
--- a/packages/backend/src/server/api/endpoints/users.ts
+++ b/packages/backend/src/server/api/endpoints/users.ts
@@ -27,7 +27,7 @@ export const paramDef = {
 		limit: { type: 'integer', minimum: 1, maximum: 100, default: 10 },
 		offset: { type: 'integer', default: 0 },
 		sort: { type: 'string', enum: ['+follower', '-follower', '+createdAt', '-createdAt', '+updatedAt', '-updatedAt'] },
-		state: { type: 'string', enum: ['all', 'admin', 'moderator', 'adminOrModerator', 'alive'], default: 'all' },
+		state: { type: 'string', enum: ['all', 'alive'], default: 'all' },
 		origin: { type: 'string', enum: ['combined', 'local', 'remote'], default: 'local' },
 		hostname: {
 			type: 'string',
@@ -54,9 +54,6 @@ export default class extends Endpoint<typeof meta, typeof paramDef> {
 			query.where('user.isExplorable = TRUE');
 
 			switch (ps.state) {
-				case 'admin': query.andWhere('user.isAdmin = TRUE'); break;
-				case 'moderator': query.andWhere('user.isModerator = TRUE'); break;
-				case 'adminOrModerator': query.andWhere('user.isAdmin = TRUE OR user.isModerator = TRUE'); break;
 				case 'alive': query.andWhere('user.updatedAt > :date', { date: new Date(Date.now() - 1000 * 60 * 60 * 24 * 5) }); break;
 			}
 
diff --git a/packages/backend/src/server/api/endpoints/users/report-abuse.ts b/packages/backend/src/server/api/endpoints/users/report-abuse.ts
index 13badab727..d19d4007d6 100644
--- a/packages/backend/src/server/api/endpoints/users/report-abuse.ts
+++ b/packages/backend/src/server/api/endpoints/users/report-abuse.ts
@@ -7,8 +7,9 @@ import { GlobalEventService } from '@/core/GlobalEventService.js';
 import { MetaService } from '@/core/MetaService.js';
 import { EmailService } from '@/core/EmailService.js';
 import { DI } from '@/di-symbols.js';
-import { ApiError } from '../../error.js';
 import { GetterService } from '@/server/api/GetterService.js';
+import { RoleService } from '@/core/RoleService.js';
+import { ApiError } from '../../error.js';
 
 export const meta = {
 	tags: ['users'],
@@ -61,6 +62,7 @@ export default class extends Endpoint<typeof meta, typeof paramDef> {
 		private metaService: MetaService,
 		private emailService: EmailService,
 		private getterService: GetterService,
+		private roleService: RoleService,
 		private globalEventService: GlobalEventService,
 	) {
 		super(meta, paramDef, async (ps, me) => {
@@ -74,7 +76,7 @@ export default class extends Endpoint<typeof meta, typeof paramDef> {
 				throw new ApiError(meta.errors.cannotReportYourself);
 			}
 
-			if (user.isAdmin) {
+			if (await this.roleService.isAdministrator(user)) {
 				throw new ApiError(meta.errors.cannotReportAdmin);
 			}
 
@@ -90,13 +92,7 @@ export default class extends Endpoint<typeof meta, typeof paramDef> {
 
 			// Publish event to moderators
 			setImmediate(async () => {
-				const moderators = await this.usersRepository.find({
-					where: [{
-						isAdmin: true,
-					}, {
-						isModerator: true,
-					}],
-				});
+				const moderators = await this.roleService.getModerators();
 
 				for (const moderator of moderators) {
 					this.globalEventService.publishAdminStream(moderator.id, 'newAbuseUserReport', {
diff --git a/packages/backend/src/server/api/endpoints/users/show.ts b/packages/backend/src/server/api/endpoints/users/show.ts
index fcdaeae1c9..70258ef009 100644
--- a/packages/backend/src/server/api/endpoints/users/show.ts
+++ b/packages/backend/src/server/api/endpoints/users/show.ts
@@ -7,6 +7,7 @@ import { UserEntityService } from '@/core/entities/UserEntityService.js';
 import { RemoteUserResolveService } from '@/core/RemoteUserResolveService.js';
 import { DI } from '@/di-symbols.js';
 import PerUserPvChart from '@/core/chart/charts/per-user-pv.js';
+import { RoleService } from '@/core/RoleService.js';
 import { ApiError } from '../../error.js';
 import { ApiLoggerService } from '../../ApiLoggerService.js';
 import type { FindOptionsWhere } from 'typeorm';
@@ -91,20 +92,21 @@ export default class extends Endpoint<typeof meta, typeof paramDef> {
 
 		private userEntityService: UserEntityService,
 		private remoteUserResolveService: RemoteUserResolveService,
+		private roleService: RoleService,
 		private perUserPvChart: PerUserPvChart,
 		private apiLoggerService: ApiLoggerService,
 	) {
 		super(meta, paramDef, async (ps, me, _1, _2, _3, ip) => {
 			let user;
 
-			const isAdminOrModerator = me && (me.isAdmin || me.isModerator);
+			const isModerator = await this.roleService.isModerator(me);
 
 			if (ps.userIds) {
 				if (ps.userIds.length === 0) {
 					return [];
 				}
 
-				const users = await this.usersRepository.findBy(isAdminOrModerator ? {
+				const users = await this.usersRepository.findBy(isModerator ? {
 					id: In(ps.userIds),
 				} : {
 					id: In(ps.userIds),
@@ -135,7 +137,7 @@ export default class extends Endpoint<typeof meta, typeof paramDef> {
 					user = await this.usersRepository.findOneBy(q);
 				}
 
-				if (user == null || (!isAdminOrModerator && user.isSuspended)) {
+				if (user == null || (!isModerator && user.isSuspended)) {
 					throw new ApiError(meta.errors.noSuchUser);
 				}
 
diff --git a/packages/backend/src/server/api/stream/channels/global-timeline.ts b/packages/backend/src/server/api/stream/channels/global-timeline.ts
index 34f782e580..185c813869 100644
--- a/packages/backend/src/server/api/stream/channels/global-timeline.ts
+++ b/packages/backend/src/server/api/stream/channels/global-timeline.ts
@@ -7,6 +7,7 @@ import type { Packed } from '@/misc/schema.js';
 import { MetaService } from '@/core/MetaService.js';
 import { NoteEntityService } from '@/core/entities/NoteEntityService.js';
 import { bindThis } from '@/decorators.js';
+import { RoleService } from '@/core/RoleService.js';
 import Channel from '../channel.js';
 
 class GlobalTimelineChannel extends Channel {
@@ -16,6 +17,7 @@ class GlobalTimelineChannel extends Channel {
 
 	constructor(
 		private metaService: MetaService,
+		private roleService: RoleService,
 		private noteEntityService: NoteEntityService,
 
 		id: string,
@@ -27,10 +29,8 @@ class GlobalTimelineChannel extends Channel {
 
 	@bindThis
 	public async init(params: any) {
-		const meta = await this.metaService.fetch();
-		if (meta.disableGlobalTimeline) {
-			if (this.user == null || (!this.user.isAdmin && !this.user.isModerator)) return;
-		}
+		const role = await this.roleService.getUserRoleOptions(this.user ? this.user.id : null);
+		if (!role.gtlAvailable) return;
 
 		// Subscribe events
 		this.subscriber.on('notesStream', this.onNote);
@@ -95,6 +95,7 @@ export class GlobalTimelineChannelService {
 
 	constructor(
 		private metaService: MetaService,
+		private roleService: RoleService,
 		private noteEntityService: NoteEntityService,
 	) {
 	}
@@ -103,6 +104,7 @@ export class GlobalTimelineChannelService {
 	public create(id: string, connection: Channel['connection']): GlobalTimelineChannel {
 		return new GlobalTimelineChannel(
 			this.metaService,
+			this.roleService,
 			this.noteEntityService,
 			id,
 			connection,
diff --git a/packages/backend/src/server/api/stream/channels/hybrid-timeline.ts b/packages/backend/src/server/api/stream/channels/hybrid-timeline.ts
index 6c6afb12bf..a0f75f202c 100644
--- a/packages/backend/src/server/api/stream/channels/hybrid-timeline.ts
+++ b/packages/backend/src/server/api/stream/channels/hybrid-timeline.ts
@@ -8,6 +8,7 @@ import { DI } from '@/di-symbols.js';
 import { MetaService } from '@/core/MetaService.js';
 import { NoteEntityService } from '@/core/entities/NoteEntityService.js';
 import { bindThis } from '@/decorators.js';
+import { RoleService } from '@/core/RoleService.js';
 import Channel from '../channel.js';
 
 class HybridTimelineChannel extends Channel {
@@ -17,6 +18,7 @@ class HybridTimelineChannel extends Channel {
 
 	constructor(
 		private metaService: MetaService,
+		private roleService: RoleService,
 		private noteEntityService: NoteEntityService,
 
 		id: string,
@@ -28,8 +30,8 @@ class HybridTimelineChannel extends Channel {
 
 	@bindThis
 	public async init(params: any): Promise<void> {
-		const meta = await this.metaService.fetch();
-		if (meta.disableLocalTimeline && !this.user!.isAdmin && !this.user!.isModerator) return;
+		const role = await this.roleService.getUserRoleOptions(this.user ? this.user.id : null);
+		if (!role.ltlAvailable) return;
 
 		// Subscribe events
 		this.subscriber.on('notesStream', this.onNote);
@@ -112,6 +114,7 @@ export class HybridTimelineChannelService {
 
 	constructor(
 		private metaService: MetaService,
+		private roleService: RoleService,
 		private noteEntityService: NoteEntityService,
 	) {
 	}
@@ -120,6 +123,7 @@ export class HybridTimelineChannelService {
 	public create(id: string, connection: Channel['connection']): HybridTimelineChannel {
 		return new HybridTimelineChannel(
 			this.metaService,
+			this.roleService,
 			this.noteEntityService,
 			id,
 			connection,
diff --git a/packages/backend/src/server/api/stream/channels/local-timeline.ts b/packages/backend/src/server/api/stream/channels/local-timeline.ts
index 54388787ef..7d76f42fe7 100644
--- a/packages/backend/src/server/api/stream/channels/local-timeline.ts
+++ b/packages/backend/src/server/api/stream/channels/local-timeline.ts
@@ -6,6 +6,7 @@ import type { Packed } from '@/misc/schema.js';
 import { MetaService } from '@/core/MetaService.js';
 import { NoteEntityService } from '@/core/entities/NoteEntityService.js';
 import { bindThis } from '@/decorators.js';
+import { RoleService } from '@/core/RoleService.js';
 import Channel from '../channel.js';
 
 class LocalTimelineChannel extends Channel {
@@ -15,6 +16,7 @@ class LocalTimelineChannel extends Channel {
 
 	constructor(
 		private metaService: MetaService,
+		private roleService: RoleService,
 		private noteEntityService: NoteEntityService,
 
 		id: string,
@@ -26,10 +28,8 @@ class LocalTimelineChannel extends Channel {
 
 	@bindThis
 	public async init(params: any) {
-		const meta = await this.metaService.fetch();
-		if (meta.disableLocalTimeline) {
-			if (this.user == null || (!this.user.isAdmin && !this.user.isModerator)) return;
-		}
+		const role = await this.roleService.getUserRoleOptions(this.user ? this.user.id : null);
+		if (!role.ltlAvailable) return;
 
 		// Subscribe events
 		this.subscriber.on('notesStream', this.onNote);
@@ -92,6 +92,7 @@ export class LocalTimelineChannelService {
 
 	constructor(
 		private metaService: MetaService,
+		private roleService: RoleService,
 		private noteEntityService: NoteEntityService,
 	) {
 	}
@@ -100,6 +101,7 @@ export class LocalTimelineChannelService {
 	public create(id: string, connection: Channel['connection']): LocalTimelineChannel {
 		return new LocalTimelineChannel(
 			this.metaService,
+			this.roleService,
 			this.noteEntityService,
 			id,
 			connection,
diff --git a/packages/backend/src/server/api/stream/types.ts b/packages/backend/src/server/api/stream/types.ts
index ec05be56ee..3bc844f949 100644
--- a/packages/backend/src/server/api/stream/types.ts
+++ b/packages/backend/src/server/api/stream/types.ts
@@ -14,23 +14,33 @@ import type { Page } from '@/models/entities/Page.js';
 import type { Packed } from '@/misc/schema.js';
 import type { Webhook } from '@/models/entities/Webhook.js';
 import type { Meta } from '@/models/entities/Meta.js';
+import { Role, RoleAssignment } from '@/models';
 import type Emitter from 'strict-event-emitter-types';
 import type { EventEmitter } from 'events';
 
+// redis通すとDateのインスタンスはstringに変換されるので
+type Serialized<T> = {
+	[K in keyof T]: T[K] extends Date ? string : T[K];
+};
+
 //#region Stream type-body definitions
 export interface InternalStreamTypes {
-	userChangeSuspendedState: { id: User['id']; isSuspended: User['isSuspended']; };
-	userChangeSilencedState: { id: User['id']; isSilenced: User['isSilenced']; };
-	userChangeModeratorState: { id: User['id']; isModerator: User['isModerator']; };
-	userTokenRegenerated: { id: User['id']; oldToken: User['token']; newToken: User['token']; };
-	remoteUserUpdated: { id: User['id']; };
-	webhookCreated: Webhook;
-	webhookDeleted: Webhook;
-	webhookUpdated: Webhook;
-	antennaCreated: Antenna;
-	antennaDeleted: Antenna;
-	antennaUpdated: Antenna;
-	metaUpdated: Meta,
+	userChangeSuspendedState: Serialized<{ id: User['id']; isSuspended: User['isSuspended']; }>;
+	userTokenRegenerated: Serialized<{ id: User['id']; oldToken: User['token']; newToken: User['token']; }>;
+	remoteUserUpdated: Serialized<{ id: User['id']; }>;
+	defaultRoleOverrideUpdated: Serialized<Role['options']>;
+	roleCreated: Serialized<Role>;
+	roleDeleted: Serialized<Role>;
+	roleUpdated: Serialized<Role>;
+	userRoleAssigned: Serialized<RoleAssignment>;
+	userRoleUnassigned: Serialized<RoleAssignment>;
+	webhookCreated: Serialized<Webhook>;
+	webhookDeleted: Serialized<Webhook>;
+	webhookUpdated: Serialized<Webhook>;
+	antennaCreated: Serialized<Antenna>;
+	antennaDeleted: Serialized<Antenna>;
+	antennaUpdated: Serialized<Antenna>;
+	metaUpdated: Serialized<Meta>;
 }
 
 export interface BroadcastTypes {
diff --git a/packages/backend/src/server/web/ClientServerService.ts b/packages/backend/src/server/web/ClientServerService.ts
index 5c29224019..2a764a25b0 100644
--- a/packages/backend/src/server/web/ClientServerService.ts
+++ b/packages/backend/src/server/web/ClientServerService.ts
@@ -29,6 +29,7 @@ import type { ChannelsRepository, ClipsRepository, EmojisRepository, FlashsRepos
 import { deepClone } from '@/misc/clone.js';
 import { bindThis } from '@/decorators.js';
 import { FlashEntityService } from '@/core/entities/FlashEntityService.js';
+import { RoleService } from '@/core/RoleService.js';
 import manifest from './manifest.json' assert { type: 'json' };
 import { FeedService } from './FeedService.js';
 import { UrlPreviewService } from './UrlPreviewService.js';
@@ -83,6 +84,7 @@ export class ClientServerService {
 		private metaService: MetaService,
 		private urlPreviewService: UrlPreviewService,
 		private feedService: FeedService,
+		private roleService: RoleService,
 
 		@Inject('queue:system') public systemQueue: SystemQueue,
 		@Inject('queue:endedPollNotification') public endedPollNotificationQueue: EndedPollNotificationQueue,
@@ -125,7 +127,12 @@ export class ClientServerService {
 					throw new Error('login required');
 				}
 				const user = await this.usersRepository.findOneBy({ token });
-				if (user == null || !(user.isAdmin || user.isModerator)) {
+				if (user == null) {
+					reply.code(403);
+					throw new Error('no such user');
+				}
+				const isAdministrator = await this.roleService.isAdministrator(user);
+				if (!isAdministrator) {
 					reply.code(403);
 					throw new Error('access denied');
 				}
diff --git a/packages/backend/src/server/web/boot.js b/packages/backend/src/server/web/boot.js
index 86df3308ec..e2fc27fecd 100644
--- a/packages/backend/src/server/web/boot.js
+++ b/packages/backend/src/server/web/boot.js
@@ -301,6 +301,10 @@
 
 			const meta = await res.json();
 
+			if (meta.version == null) {
+				throw new Error('failed to fetch instance metadata');
+			}
+
 			if (meta.version != v) {
 				localStorage.setItem('v', meta.version);
 				refresh();