diff --git a/packages/channels/dingtalk/package.json b/packages/channels/dingtalk/package.json
index e6f6f2c6037..64de9d5c547 100644
--- a/packages/channels/dingtalk/package.json
+++ b/packages/channels/dingtalk/package.json
@@ -15,7 +15,9 @@
     "dist"
   ],
   "scripts": {
-    "build": "tsc --build"
+    "build": "tsc --build",
+    "test": "vitest run",
+    "test:ci": "vitest run"
   },
   "dependencies": {
     "@qwen-code/channel-base": "file:../base",
diff --git a/packages/channels/dingtalk/src/DingtalkAdapter.test.ts b/packages/channels/dingtalk/src/DingtalkAdapter.test.ts
new file mode 100644
index 00000000000..98a46f42887
--- /dev/null
+++ b/packages/channels/dingtalk/src/DingtalkAdapter.test.ts
@@ -0,0 +1,111 @@
+import { describe, expect, it, vi } from 'vitest';
+
+vi.mock('dingtalk-stream-sdk-nodejs', () => ({
+  DWClient: class {
+    disconnect = vi.fn();
+    getConfig = vi.fn(() => ({ access_token: 'token' }));
+    registerCallbackListener = vi.fn();
+    send = vi.fn();
+    connect = vi.fn();
+  },
+  TOPIC_ROBOT: 'robot',
+  EventAck: { SUCCESS: 'success' },
+}));
+
+vi.mock('@qwen-code/channel-base', () => ({
+  ChannelBase: class {
+    protected config: Record<string, unknown>;
+    protected name: string;
+
+    constructor(
+      name: string,
+      config: Record<string, unknown>,
+      _bridge: unknown,
+    ) {
+      this.name = name;
+      this.config = config;
+    }
+  },
+}));
+
+const { DingtalkChannel } = await import('./DingtalkAdapter.js');
+
+function createChannel(): DingtalkChannel {
+  return new DingtalkChannel(
+    'test-dingtalk',
+    {
+      type: 'dingtalk',
+      clientId: 'client-id',
+      clientSecret: 'client-secret',
+      senderPolicy: 'open',
+      allowedUsers: [],
+      sessionScope: 'user',
+      cwd: '/tmp',
+      groupPolicy: 'open',
+      groups: {},
+    },
+    {} as never,
+  );
+}
+
+function getPromptHook(
+  channel: DingtalkChannel,
+  hook: 'onPromptStart' | 'onPromptEnd',
+): (chatId: string, sessionId: string, messageId?: string) => void {
+  const fn = (channel as unknown as Record<string, unknown>)[hook] as (
+    chatId: string,
+    sessionId: string,
+    messageId?: string,
+  ) => void;
+  return fn.bind(channel);
+}
+
+describe('DingtalkChannel prompt reactions', () => {
+  it('skips uppercase webhook URLs when starting a prompt', () => {
+    const channel = createChannel();
+    const attachReaction = vi.fn().mockResolvedValue(undefined);
+    (
+      channel as unknown as { attachReaction: typeof attachReaction }
+    ).attachReaction = attachReaction;
+
+    getPromptHook(channel, 'onPromptStart')(
+      'HTTPS://oapi.dingtalk.com/robot/send?access_token=token',
+      'session-1',
+      'message-1',
+    );
+
+    expect(attachReaction).not.toHaveBeenCalled();
+  });
+
+  it('still attaches reactions for conversation IDs', () => {
+    const channel = createChannel();
+    const attachReaction = vi.fn().mockResolvedValue(undefined);
+    (
+      channel as unknown as { attachReaction: typeof attachReaction }
+    ).attachReaction = attachReaction;
+
+    getPromptHook(channel, 'onPromptStart')(
+      'cid-123',
+      'session-1',
+      'message-1',
+    );
+
+    expect(attachReaction).toHaveBeenCalledWith('message-1', 'cid-123');
+  });
+
+  it('skips uppercase webhook URLs when ending a prompt', () => {
+    const channel = createChannel();
+    const recallReaction = vi.fn().mockResolvedValue(undefined);
+    (
+      channel as unknown as { recallReaction: typeof recallReaction }
+    ).recallReaction = recallReaction;
+
+    getPromptHook(channel, 'onPromptEnd')(
+      'HTTPS://oapi.dingtalk.com/robot/send?access_token=token',
+      'session-1',
+      'message-1',
+    );
+
+    expect(recallReaction).not.toHaveBeenCalled();
+  });
+});
diff --git a/packages/channels/dingtalk/src/DingtalkAdapter.ts b/packages/channels/dingtalk/src/DingtalkAdapter.ts
index 1729504c84a..7309e320e3c 100644
--- a/packages/channels/dingtalk/src/DingtalkAdapter.ts
+++ b/packages/channels/dingtalk/src/DingtalkAdapter.ts
@@ -244,7 +244,7 @@ export class DingtalkChannel extends ChannelBase {
    * conversation ID — skip the webhook-URL fallback case.
    */
   private isConversationId(chatId: string): boolean {
-    return !!chatId && !chatId.startsWith('http');
+    return !!chatId && !/^https?:\/\//i.test(chatId);
   }
 
   protected override onPromptStart(