diff --git a/packages/core/src/v3/schemas/api.ts b/packages/core/src/v3/schemas/api.ts
index 49e5869ab..8630e183d 100644
--- a/packages/core/src/v3/schemas/api.ts
+++ b/packages/core/src/v3/schemas/api.ts
@@ -205,7 +205,7 @@ export const TriggerTaskRequestBody = z.object({
       region: z.string().optional(),
       debounce: z
         .object({
-          key: z.string(),
+          key: z.string().max(512),
           delay: z.string(),
         })
         .optional(),
@@ -259,7 +259,7 @@ export const BatchTriggerTaskItem = z.object({
       region: z.string().optional(),
       debounce: z
         .object({
-          key: z.string(),
+          key: z.string().max(512),
           delay: z.string(),
         })
         .optional(),