diff --git a/src/types/services/gamePrize.ts b/src/types/services/gamePrize.ts
index 21259f3..44602f0 100644
--- a/src/types/services/gamePrize.ts
+++ b/src/types/services/gamePrize.ts
@@ -33,3 +33,13 @@ export interface GamePrizeRequest {
   threshold?: number // optional (int64 → number in TS)
   fallback_prize_id?: string // optional uuid
 }
+
+export interface GamePrizeRequest {
+  game_id: string // uuid
+  name: string
+  weight: number // min 1
+  stock: number // min 0
+  max_stock?: number // optional
+  threshold?: number // optional (int64 → number in TS)
+  fallback_prize_id?: string // optional uuid
+}