diff --git a/src/models/repositories/note-favorite.ts b/src/models/repositories/note-favorite.ts
index b5875802fb..01064f3065 100644
--- a/src/models/repositories/note-favorite.ts
+++ b/src/models/repositories/note-favorite.ts
@@ -2,6 +2,7 @@ import { EntityRepository, Repository } from 'typeorm';
 import { NoteFavorite } from '../entities/note-favorite';
 import { Notes } from '..';
 import { ensure } from '../../prelude/ensure';
+import { types, bool } from '../../misc/schema';
 
 @EntityRepository(NoteFavorite)
 export class NoteFavoriteRepository extends Repository<NoteFavorite> {
@@ -26,3 +27,33 @@ export class NoteFavoriteRepository extends Repository<NoteFavorite> {
 		return Promise.all(favorites.map(x => this.pack(x, me)));
 	}
 }
+
+export const packedNoteFavoriteSchema = {
+	type: types.object,
+	optional: bool.false, nullable: bool.false,
+	properties: {
+		id: {
+			type: types.string,
+			optional: bool.false, nullable: bool.false,
+			format: 'id',
+			description: 'The unique identifier for this favorite.',
+			example: 'xxxxxxxxxx',
+		},
+		createdAt: {
+			type: types.string,
+			optional: bool.false, nullable: bool.false,
+			format: 'date-time',
+			description: 'The date that the favorite was created.'
+		},
+		note: {
+			type: types.object,
+			optional: bool.false, nullable: bool.false,
+			ref: 'Note',
+		},
+		noteId: {
+			type: types.string,
+			optional: bool.false, nullable: bool.false,
+			format: 'id',
+		},
+	},
+};
diff --git a/src/server/api/endpoints/i/favorites.ts b/src/server/api/endpoints/i/favorites.ts
index aad706545a..d1e90dd15c 100644
--- a/src/server/api/endpoints/i/favorites.ts
+++ b/src/server/api/endpoints/i/favorites.ts
@@ -3,6 +3,7 @@ import { ID } from '../../../../misc/cafy-id';
 import define from '../../define';
 import { NoteFavorites } from '../../../../models';
 import { makePaginationQuery } from '../../common/make-pagination-query';
+import { types, bool } from '../../../../misc/schema';
 
 export const meta = {
 	desc: {
@@ -29,7 +30,17 @@ export const meta = {
 		untilId: {
 			validator: $.optional.type(ID),
 		},
-	}
+	},
+
+	res: {
+		type: types.array,
+		optional: bool.false, nullable: bool.false,
+		items: {
+			type: types.object,
+			optional: bool.false, nullable: bool.false,
+			ref: 'NoteFavorite',
+		}
+	},
 };
 
 export default define(meta, async (ps, user) => {
diff --git a/src/server/api/openapi/schemas.ts b/src/server/api/openapi/schemas.ts
index 32f69bdef3..0a49607f05 100644
--- a/src/server/api/openapi/schemas.ts
+++ b/src/server/api/openapi/schemas.ts
@@ -14,6 +14,7 @@ import { packedNoteReactionSchema } from '../../../models/repositories/note-reac
 import { packedHashtagSchema } from '../../../models/repositories/hashtag';
 import { packedPageSchema } from '../../../models/repositories/page';
 import { packedUserGroupSchema } from '../../../models/repositories/user-group';
+import { packedNoteFavoriteSchema } from '../../../models/repositories/note-favorite';
 
 export function convertSchemaToOpenApiSchema(schema: Schema) {
 	const res: any = schema;
@@ -71,13 +72,14 @@ export const schemas = {
 	App: convertSchemaToOpenApiSchema(packedAppSchema),
 	MessagingMessage: convertSchemaToOpenApiSchema(packedMessagingMessageSchema),
 	Note: convertSchemaToOpenApiSchema(packedNoteSchema),
+	NoteReaction: convertSchemaToOpenApiSchema(packedNoteReactionSchema),
+	NoteFavorite: convertSchemaToOpenApiSchema(packedNoteFavoriteSchema),
 	Notification: convertSchemaToOpenApiSchema(packedNotificationSchema),
 	DriveFile: convertSchemaToOpenApiSchema(packedDriveFileSchema),
 	DriveFolder: convertSchemaToOpenApiSchema(packedDriveFolderSchema),
 	Following: convertSchemaToOpenApiSchema(packedFollowingSchema),
 	Muting: convertSchemaToOpenApiSchema(packedMutingSchema),
 	Blocking: convertSchemaToOpenApiSchema(packedBlockingSchema),
-	NoteReaction: convertSchemaToOpenApiSchema(packedNoteReactionSchema),
 	Hashtag: convertSchemaToOpenApiSchema(packedHashtagSchema),
 	Page: convertSchemaToOpenApiSchema(packedPageSchema),
 };