diff --git a/packages/backend/src/server/api/endpoints/admin/relays/remove.ts b/packages/backend/src/server/api/endpoints/admin/relays/remove.ts
index 5e26f61fa7..94c523a6c9 100644
--- a/packages/backend/src/server/api/endpoints/admin/relays/remove.ts
+++ b/packages/backend/src/server/api/endpoints/admin/relays/remove.ts
@@ -2,28 +2,14 @@ import { Injectable } from '@nestjs/common';
 import { Endpoint } from '@/server/api/endpoint-base.js';
 import { RelayService } from '@/core/RelayService.js';
 
-export const meta = {
-	tags: ['admin'],
-
-	requireCredential: true,
-	requireModerator: true,
-} as const;
-
-export const paramDef = {
-	type: 'object',
-	properties: {
-		inbox: { type: 'string' },
-	},
-	required: ['inbox'],
-} as const;
-
 // eslint-disable-next-line import/no-default-export
 @Injectable()
-export default class extends Endpoint<typeof meta, typeof paramDef> {
+export default class extends Endpoint<'admin/relays/remove'> {
+	name = 'admin/relays/remove' as const;
 	constructor(
 		private relayService: RelayService,
 	) {
-		super(meta, paramDef, async (ps, me) => {
+		super(async (ps, me) => {
 			return await this.relayService.removeRelay(ps.inbox);
 		});
 	}
diff --git a/packages/backend/src/server/api/endpoints/admin/roles/assign.ts b/packages/backend/src/server/api/endpoints/admin/roles/assign.ts
index b80aaba122..198fee55f7 100644
--- a/packages/backend/src/server/api/endpoints/admin/roles/assign.ts
+++ b/packages/backend/src/server/api/endpoints/admin/roles/assign.ts
@@ -5,52 +5,10 @@ import { DI } from '@/di-symbols.js';
 import { ApiError } from '@/server/api/error.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' },
-		expiresAt: {
-			type: 'integer',
-			nullable: true,
-		},
-	},
-	required: [
-		'roleId',
-		'userId',
-	],
-} as const;
-
 // eslint-disable-next-line import/no-default-export
 @Injectable()
-export default class extends Endpoint<typeof meta, typeof paramDef> {
+export default class extends Endpoint<'admin/roles/assign'> {
+	name = 'admin/roles/assign' as const;
 	constructor(
 		@Inject(DI.usersRepository)
 		private usersRepository: UsersRepository,
@@ -60,19 +18,19 @@ export default class extends Endpoint<typeof meta, typeof paramDef> {
 
 		private roleService: RoleService,
 	) {
-		super(meta, paramDef, async (ps, me) => {
+		super(async (ps, me) => {
 			const role = await this.rolesRepository.findOneBy({ id: ps.roleId });
 			if (role == null) {
-				throw new ApiError(meta.errors.noSuchRole);
+				throw new ApiError(this.meta.errors.noSuchRole);
 			}
 
 			if (!role.canEditMembersByModerator && !(await this.roleService.isAdministrator(me))) {
-				throw new ApiError(meta.errors.accessDenied);
+				throw new ApiError(this.meta.errors.accessDenied);
 			}
 
 			const user = await this.usersRepository.findOneBy({ id: ps.userId });
 			if (user == null) {
-				throw new ApiError(meta.errors.noSuchUser);
+				throw new ApiError(this.meta.errors.noSuchUser);
 			}
 
 			if (ps.expiresAt && ps.expiresAt <= Date.now()) {
diff --git a/packages/backend/src/server/api/endpoints/admin/roles/create.ts b/packages/backend/src/server/api/endpoints/admin/roles/create.ts
index 916172f54a..e189fb27f5 100644
--- a/packages/backend/src/server/api/endpoints/admin/roles/create.ts
+++ b/packages/backend/src/server/api/endpoints/admin/roles/create.ts
@@ -6,53 +6,10 @@ 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 },
-		iconUrl: { type: 'string', nullable: true },
-		target: { type: 'string', enum: ['manual', 'conditional'] },
-		condFormula: { type: 'object' },
-		isPublic: { type: 'boolean' },
-		isModerator: { type: 'boolean' },
-		isAdministrator: { type: 'boolean' },
-		isExplorable: { type: 'boolean', default: false }, // optional for backward compatibility
-		asBadge: { type: 'boolean' },
-		canEditMembersByModerator: { type: 'boolean' },
-		displayOrder: { type: 'number' },
-		policies: {
-			type: 'object',
-		},
-	},
-	required: [
-		'name',
-		'description',
-		'color',
-		'iconUrl',
-		'target',
-		'condFormula',
-		'isPublic',
-		'isModerator',
-		'isAdministrator',
-		'asBadge',
-		'canEditMembersByModerator',
-		'displayOrder',
-		'policies',
-	],
-} as const;
-
 // eslint-disable-next-line import/no-default-export
 @Injectable()
-export default class extends Endpoint<typeof meta, typeof paramDef> {
+export default class extends Endpoint<'admin/roles/create'> {
+	name = 'admin/roles/create' as const;
 	constructor(
 		@Inject(DI.rolesRepository)
 		private rolesRepository: RolesRepository,
@@ -61,7 +18,7 @@ export default class extends Endpoint<typeof meta, typeof paramDef> {
 		private idService: IdService,
 		private roleEntityService: RoleEntityService,
 	) {
-		super(meta, paramDef, async (ps, me) => {
+		super(async (ps, me) => {
 			const date = new Date();
 			const created = await this.rolesRepository.insert({
 				id: this.idService.genId(),
diff --git a/packages/misskey-js/src/endpoints.ts b/packages/misskey-js/src/endpoints.ts
index 01709bea9a..6d629d8501 100644
--- a/packages/misskey-js/src/endpoints.ts
+++ b/packages/misskey-js/src/endpoints.ts
@@ -1039,7 +1039,116 @@ export const endpoints = {
 				},
 			},
 		}],
-	}
+	},
+	'admin/relays/remove': {
+		tags: ['admin'],
+	
+		requireCredential: true,
+		requireModerator: true,
+
+		defines: [{
+			req: {
+				type: 'object',
+				properties: {
+					inbox: { type: 'string' },
+				},
+				required: ['inbox'],
+			},
+			res: undefined,
+		}],
+	},
+	'admin/roles/assign': {
+		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',
+			},
+		},
+
+		defines: [{
+			req: {
+				type: 'object',
+				properties: {
+					roleId: { type: 'string', format: 'misskey:id' },
+					userId: { type: 'string', format: 'misskey:id' },
+					expiresAt: {
+						type: ['integer', 'null'],
+					},
+				},
+				required: [
+					'roleId',
+					'userId',
+				],
+			},
+			res: undefined,
+		}],
+	},
+	'admin/roles/create': {
+		tags: ['admin', 'role'],
+	
+		requireCredential: true,
+		requireAdmin: true,
+
+		defines: [{
+			req: {
+				type: 'object',
+				properties: {
+					name: { type: 'string' },
+					description: { type: 'string' },
+					color: { type: ['string', 'null'] },
+					iconUrl: { type: ['string', 'null'] },
+					target: { type: 'string', enum: ['manual', 'conditional'] },
+					condFormula: { type: 'object' },
+					isPublic: { type: 'boolean' },
+					isModerator: { type: 'boolean' },
+					isAdministrator: { type: 'boolean' },
+					isExplorable: { type: 'boolean', default: false }, // optional for backward compatibility
+					asBadge: { type: 'boolean' },
+					canEditMembersByModerator: { type: 'boolean' },
+					displayOrder: { type: 'number' },
+					policies: {
+						type: 'object',
+					},
+				},
+				required: [
+					'name',
+					'description',
+					'color',
+					'iconUrl',
+					'target',
+					'condFormula',
+					'isPublic',
+					'isModerator',
+					'isAdministrator',
+					'asBadge',
+					'canEditMembersByModerator',
+					'displayOrder',
+					'policies',
+				],
+			},
+			res: {
+				$ref: 'https://misskey-hub.net/api/schemas/Role',
+			},
+		}],
+	},
 } as const satisfies { [x: string]: IEndpointMeta; };
 
 /**