diff --git a/packages/frontend/src/utility/misskey-api.ts b/packages/frontend/src/utility/misskey-api.ts
index 72ba54ade3..f10249878f 100644
--- a/packages/frontend/src/utility/misskey-api.ts
+++ b/packages/frontend/src/utility/misskey-api.ts
@@ -9,24 +9,12 @@ import { apiUrl } from '@@/js/config.js';
 import { $i } from '@/i.js';
 export const pendingApiRequestsCount = ref(0);
 
-export type Endpoint = keyof Misskey.Endpoints;
-
-export type Request<E extends Endpoint> = Misskey.Endpoints[E]['req'];
-
-export type AnyRequest<E extends Endpoint | (string & unknown)> =
-	(E extends Endpoint ? Request<E> : never) | object;
-
-export type Response<E extends Endpoint | (string & unknown), P extends AnyRequest<E>> =
-	E extends Endpoint
-	? P extends Request<E> ? Misskey.api.SwitchCaseResponseType<E, P> : never
-	: object;
-
 // Implements Misskey.api.ApiClient.request
 export function misskeyApi<
 	ResT = void,
-	E extends Endpoint | NonNullable<string> = Endpoint,
-	P extends AnyRequest<E> = E extends Endpoint ? Request<E> : never,
-	_ResT = ResT extends void ? Response<E, P> : ResT,
+	E extends keyof Misskey.Endpoints = keyof Misskey.Endpoints,
+	P extends Misskey.Endpoints[E]['req'] = Misskey.Endpoints[E]['req'],
+	_ResT = ResT extends void ? Misskey.api.SwitchCaseResponseType<E, P> : ResT,
 >(
 	endpoint: E,
 	data: P & { i?: string | null; } = {} as any,