diff --git a/extensions/discord/src/monitor/message-handler.process.test.ts b/extensions/discord/src/monitor/message-handler.process.test.ts
index 7b5e4c09ff0..21544d22cb1 100644
--- a/extensions/discord/src/monitor/message-handler.process.test.ts
+++ b/extensions/discord/src/monitor/message-handler.process.test.ts
@@ -5,9 +5,9 @@ import {
   type ChannelBotLoopProtectionFacts,
 } from "openclaw/plugin-sdk/channel-inbound";
 import type { ReplyPayload } from "openclaw/plugin-sdk/reply-dispatch-runtime";
+import { setReplyPayloadMetadata } from "openclaw/plugin-sdk/reply-payload-testing";
 import * as runtimeEnvModule from "openclaw/plugin-sdk/runtime-env";
 import { beforeAll, beforeEach, describe, expect, it, vi } from "vitest";
-import { setReplyPayloadMetadata } from "../../../../src/auto-reply/reply-payload.js";
 import type { DiscordMessagePreflightContext } from "./message-handler.preflight.js";
 
 const sendMocks = vi.hoisted(() => ({
diff --git a/package.json b/package.json
index 5bfe8839320..a75850fdab4 100644
--- a/package.json
+++ b/package.json
@@ -51,6 +51,8 @@
     "!dist/plugin-sdk/provider-http-test-mocks.d.ts",
     "!dist/plugin-sdk/provider-test-contracts.js",
     "!dist/plugin-sdk/provider-test-contracts.d.ts",
+    "!dist/plugin-sdk/reply-payload-testing.js",
+    "!dist/plugin-sdk/reply-payload-testing.d.ts",
     "!dist/plugin-sdk/test-env.js",
     "!dist/plugin-sdk/test-env.d.ts",
     "!dist/plugin-sdk/test-fixtures.js",
diff --git a/scripts/lib/plugin-sdk-entrypoints.json b/scripts/lib/plugin-sdk-entrypoints.json
index 258b53d9d5d..05782291993 100644
--- a/scripts/lib/plugin-sdk-entrypoints.json
+++ b/scripts/lib/plugin-sdk-entrypoints.json
@@ -46,6 +46,7 @@
   "reply-reference",
   "reply-chunking",
   "reply-payload",
+  "reply-payload-testing",
   "agent-media-payload",
   "inbound-reply-dispatch",
   "inbound-envelope",
diff --git a/scripts/lib/plugin-sdk-private-local-only-subpaths.json b/scripts/lib/plugin-sdk-private-local-only-subpaths.json
index 048479c76bf..82f65e719aa 100644
--- a/scripts/lib/plugin-sdk-private-local-only-subpaths.json
+++ b/scripts/lib/plugin-sdk-private-local-only-subpaths.json
@@ -13,6 +13,7 @@
   "qa-channel-protocol",
   "qa-lab",
   "qa-runtime",
+  "reply-payload-testing",
   "ssrf-runtime-internal",
   "test-env",
   "test-fixtures",
diff --git a/src/plugin-sdk/reply-payload-testing.ts b/src/plugin-sdk/reply-payload-testing.ts
new file mode 100644
index 00000000000..854b079dd18
--- /dev/null
+++ b/src/plugin-sdk/reply-payload-testing.ts
@@ -0,0 +1 @@
+export { setReplyPayloadMetadata } from "../auto-reply/reply-payload.js";