diff --git a/packages/backend/src/server/api/endpoints/admin/queue/inbox-delayed.ts b/packages/backend/src/server/api/endpoints/admin/queue/inbox-delayed.ts
index e74bf3111..a602e1072 100644
--- a/packages/backend/src/server/api/endpoints/admin/queue/inbox-delayed.ts
+++ b/packages/backend/src/server/api/endpoints/admin/queue/inbox-delayed.ts
@@ -5,8 +5,8 @@ import type { InboxQueue } from '@/core/QueueModule.js';
 
 // eslint-disable-next-line import/no-default-export
 @Injectable()
-export default class extends Endpoint<'admin/queue/inboc-delayed'> {
-	name = 'admin/queue/inboc-delayed' as const;
+export default class extends Endpoint<'admin/queue/inbox-delayed'> {
+	name = 'admin/queue/inbox-delayed' as const;
 	constructor(
 		@Inject('queue:inbox') public inboxQueue: InboxQueue,
 	) {
diff --git a/packages/misskey-js/src/endpoints.ts b/packages/misskey-js/src/endpoints.ts
index 8f8553a1b..43475d870 100644
--- a/packages/misskey-js/src/endpoints.ts
+++ b/packages/misskey-js/src/endpoints.ts
@@ -930,7 +930,7 @@ export const endpoints = {
 			},
 		}],
 	},
-	'admin/queue/inboc-delayed': {
+	'admin/queue/inbox-delayed': {
 		tags: ['admin'],
 	
 		requireCredential: true,
diff --git a/packages/misskey-js/src/endpoints.types.ts b/packages/misskey-js/src/endpoints.types.ts
index 4120e6840..38ecdd2e7 100644
--- a/packages/misskey-js/src/endpoints.types.ts
+++ b/packages/misskey-js/src/endpoints.types.ts
@@ -24,10 +24,31 @@ export type RolePolicies = {
 };
 
 export type EndpointDefines = ReadonlyArray<{
+	/**
+	 * 要求のJSON Schema
+	 * 何もないときはundefined
+	 * $refは使えない(ajv由来)
+	 */
 	req: DeepOmit<JSONSchema7, { $ref: never }> | undefined;
+
+	/**
+	 * 応答のJSON Schema
+	 * 何もないときはundefined
+	 */
 	res: JSONSchema7 | undefined;
 }>;
 
+/**
+ * JSON Schemaのとき型に変換し、undefinedのときvoid | Record<string, never>を返す
+ */
+export type SchemaOrUndefined<T extends JSONSchema7 | undefined, IsResponse extends boolean = false> = T extends JSONSchema7 ? SchemaType<T, References, IsResponse> : (void | Record<string, never>);
+
+/**
+ * reqからresを推論する
+ */
+export type ResponseOf<D extends IEndpointMeta, P, IsResponse extends boolean = false, DD extends D['defines'][number] = D['defines'][number]> =
+	P extends SchemaOrUndefined<DD['req'], IsResponse> ? SchemaOrUndefined<DD['res']> : never;
+
 export interface IEndpointMeta {
 	readonly stability?: 'deprecated' | 'experimental' | 'stable';
 
@@ -127,9 +148,4 @@ export interface IEndpointMeta {
 	readonly cacheSec?: number;
 }
 
-export type SchemaOrUndefined<T extends JSONSchema7 | undefined, IsResponse extends boolean = false> = T extends JSONSchema7 ? SchemaType<T, References, IsResponse> : (void | Record<string, never>);
-
-export type ResponseOf<D extends IEndpointMeta, P, IsResponse extends boolean = false, DD extends D['defines'][number] = D['defines'][number]> =
-	P extends SchemaOrUndefined<DD['req'], IsResponse> ? SchemaOrUndefined<DD['res']> : never;
-
 export type Endpoints = typeof endpoints;