---
title: Feishu (Lark)
description: Integrate CowAgent into Feishu via a custom enterprise app
---

> Integrate CowAgent into Feishu via a custom enterprise app. Supports p2p chat and group chat (@bot), uses WebSocket long connection (no public IP needed), supports streaming typewriter replies and voice messages.

<Note>
  You need to be a Feishu enterprise user with admin privileges.
</Note>

## 1. Setup

### Option 1: One-click Scan to Create (Recommended)

No need to manually create an app on the Feishu Developer Platform. Start the Cow project, open the web console (default `http://127.0.0.1:9899/`), go to **Channels**, click **Add Channel**, choose **Feishu**, then under the **Scan QR** tab click **One-click Create Feishu App** and scan with the **Feishu App** to complete app creation and connection automatically.

<Note>
  The created app comes with all required permissions (messaging, card read/write, group events, etc.) and event subscriptions pre-configured. Currently only the Feishu mainland version is supported (Lark international not yet supported).
</Note>

When starting from CLI without `feishu_app_id` configured, the QR code is also printed to the terminal.

### Option 2: Manual Setup

Manually create a custom app on the Feishu Developer Platform, then connect via Web Console or config file.

**Step 1: Create the App**

1. Go to [Feishu Developer Platform](https://open.feishu.cn/app/), click **Create Enterprise Custom App**:

<img src="https://img-1317903499.cos.ap-guangzhou.myqcloud.com/docs/feishu-hosting-create-app.jpg" width="500"/>

2. In **Add App Capabilities**, add the **Bot** capability:

<img src="https://img-1317903499.cos.ap-guangzhou.myqcloud.com/docs/feishu-hosting-add-bot.jpg" width="800"/>

3. In **Permission Management**, paste the following permissions and **Batch Enable** all:

```
im:message,im:message.group_at_msg,im:message.group_at_msg:readonly,im:message.p2p_msg,im:message.p2p_msg:readonly,im:message:send_as_bot,im:resource,cardkit:card:write
```

<img src="https://cdn.link-ai.tech/doc/feishu-hosting-add-auth2.png" width="800"/>

4. Get `App ID` and `App Secret` from **Credentials & Basic Info**:

<img src="https://img-1317903499.cos.ap-guangzhou.myqcloud.com/docs/feishu-hosting-appid-secret.jpg" width="800"/>

**Step 2: Connect to CowAgent**

<Tabs>
  <Tab title="Web Console">
    Open the web console, go to **Channels**, click **Add Channel**, choose **Feishu**, switch to the **Manual** tab, enter App ID and App Secret, then click connect.
  </Tab>
  <Tab title="Config File">
    Add the following to `config.json` and start the program:

    ```json
    {
      "channel_type": "feishu",
      "feishu_app_id": "YOUR_APP_ID",
      "feishu_app_secret": "YOUR_APP_SECRET",
      "feishu_stream_reply": true
    }
    ```

    | Parameter | Description | Default |
    | --- | --- | --- |
    | `feishu_app_id` | Feishu app App ID | - |
    | `feishu_app_secret` | Feishu app App Secret | - |
    | `feishu_stream_reply` | Enable streaming typewriter reply | `true` |
  </Tab>
</Tabs>

**Step 3: Publish the App**

1. After Cow is running, go to **Events & Callbacks** in the Feishu Developer Platform, choose **Long Connection** mode and save:

<img src="https://cdn.link-ai.tech/doc/202601311731183.png" width="600"/>

2. Click **Add Event**, search for "Receive Message" and choose **Receive Message v2.0**.

3. Click **Version Management & Release**, create a version and apply for **Production Release**. Approve the request in the Feishu client:

<img src="https://cdn.link-ai.tech/doc/202601311807356.png" width="600"/>

## 2. Features

| Feature | Status |
| --- | --- |
| P2P chat | ✅ |
| Group chat (@bot) | ✅ |
| Text messages | ✅ send/receive |
| Image messages | ✅ send/receive |
| Voice messages | ✅ send/receive |
| Streaming reply | ✅ (powered by Feishu cardkit streaming card) |

<Note>
  Streaming reply requires the `cardkit:card:write` permission (already enabled by one-click creation) and Feishu client version ≥ 7.20. Older clients see an upgrade prompt; if the permission or version is not satisfied, replies fall back to plain text automatically.
</Note>

## 3. Usage

After connection, search for the bot name in Feishu to start a chat.

To use in groups, add the bot to a group and @-mention it.
