diff --git a/packages/backend/src/misc/schema.ts b/packages/backend/src/misc/schema.ts
index 37b0d713e..6bd714b0f 100644
--- a/packages/backend/src/misc/schema.ts
+++ b/packages/backend/src/misc/schema.ts
@@ -27,6 +27,7 @@ import { packedFederationInstanceSchema } from '@/models/schema/federation-insta
 import { packedQueueCountSchema } from '@/models/schema/queue.js';
 import { packedGalleryPostSchema } from '@/models/schema/gallery-post.js';
 import { packedEmojiSchema } from '@/models/schema/emoji.js';
+import { packedFlashSchema } from '@/models/schema/flash.js';
 
 export const refs = {
 	UserLite: packedUserLiteSchema,
@@ -57,6 +58,7 @@ export const refs = {
 	FederationInstance: packedFederationInstanceSchema,
 	GalleryPost: packedGalleryPostSchema,
 	Emoji: packedEmojiSchema,
+	Flash: packedFlashSchema,
 };
 
 export type Packed<x extends keyof typeof refs> = SchemaType<typeof refs[x]>;
diff --git a/packages/backend/src/models/schema/flash.ts b/packages/backend/src/models/schema/flash.ts
new file mode 100644
index 000000000..8471a138e
--- /dev/null
+++ b/packages/backend/src/models/schema/flash.ts
@@ -0,0 +1,51 @@
+export const packedFlashSchema = {
+	type: 'object',
+	properties: {
+		id: {
+			type: 'string',
+			optional: false, nullable: false,
+			format: 'id',
+			example: 'xxxxxxxxxx',
+		},
+		createdAt: {
+			type: 'string',
+			optional: false, nullable: false,
+			format: 'date-time',
+		},
+		updatedAt: {
+			type: 'string',
+			optional: false, nullable: false,
+			format: 'date-time',
+		},
+		title: {
+			type: 'string',
+			optional: false, nullable: false,
+		},
+		summary: {
+			type: 'string',
+			optional: false, nullable: false,
+		},
+		script: {
+			type: 'string',
+			optional: false, nullable: false,
+		},
+		userId: {
+			type: 'string',
+			optional: false, nullable: false,
+			format: 'id',
+		},
+		user: {
+			type: 'object',
+			ref: 'UserLite',
+			optional: false, nullable: false,
+		},
+		likedCount: {
+			type: 'number',
+			optional: false, nullable: true,
+		},
+		isLiked: {
+			type: 'boolean',
+			optional: true, nullable: false,
+		},
+	},
+} as const;