---
title: WeChat
description: Connect CowAgent to personal WeChat
---

> Connect CowAgent to your personal WeChat. Simply scan a QR code to log in — no public IP required. Supports text, image, voice, file, and video messages.

## 1. Configuration

### Option A: Web Console

Start the program and open the Web console (local access: http://127.0.0.1:9899). Go to the **Channels** tab, click **Connect Channel**, select **WeChat**, and follow the prompts to scan the QR code.

### Option B: Config File

Set `channel_type` to `weixin` in your `config.json`:

```json
{
  "channel_type": "weixin"
}
```

After starting the program, a QR code will be displayed in the terminal. Scan it with WeChat and confirm on your phone to complete login.

<Note>
  For backward compatibility, setting `channel_type` to `wx` also activates the WeChat channel.
</Note>

## 2. Parameters

| Parameter | Description | Default |
| --- | --- | --- |
| `channel_type` | Set to `weixin` or `wx` | — |

Login credentials are automatically saved to `~/.weixin_cow_credentials.json`. To force a re-login, delete this file and restart.

## 3. Login

### QR Code Login

On first startup, a QR code is displayed in the terminal (valid for approximately 2 minutes). Scan it with WeChat and confirm on your phone.

- The QR code automatically refreshes when it expires
- The `qrcode` dependency is already included in `requirements.txt`, enabling QR code rendering directly in the terminal

### Credential Persistence

After successful login, credentials are saved to `~/.weixin_cow_credentials.json`. Subsequent startups will reuse the saved credentials without requiring a new scan.

To force a re-login, delete the credentials file and restart the program.

### Session Expiry

When the WeChat session expires (errcode -14), the program automatically clears old credentials and initiates a new QR login — no manual intervention required.

## 4. Supported Features

| Feature | Status |
| --- | --- |
| Direct Messages | ✅ |
| Text Messages | ✅ Send & Receive |
| Image Messages | ✅ Send & Receive |
| File Messages | ✅ Send & Receive |
| Video Messages | ✅ Send & Receive |
| Voice Messages | ✅ Receive |

## 5. Notes

1. Ensure network access to `ilinkai.weixin.qq.com`.
2. Media files (images, files, videos) are transferred via CDN with AES-128-ECB encryption, handled automatically by the program.
3. A stable network connection is recommended to avoid frequent disconnections that would require re-scanning.