MCP Server for notify to weixin / telegram / bark / lark

Instructions

Implementation Reference

• mcp_notify/wework.py:44-61 (handler)

  The core handler function for the 'wework_send_image' tool. It fetches the image from the provided URL, base64-encodes it, computes its MD5 hash, and sends it as an image message via the WeWork group robot webhook API.

  @mcp.tool(
      title="企业微信群机器人-发送图片消息",
      description="通过企业微信群机器人发送图片消息",
  )
  def wework_send_image(
      url: str = Field(description="图片url"),
      bot_key: str = FIELD_BOT_KEY,
  ):
      res = requests.get(url, timeout=120)
      res.raise_for_status()
      b64str = base64.b64encode(res.content).decode()
      md5str = hashlib.md5(res.content).hexdigest()
      res = requests.post(
          f"{WEWORK_BASE_URL}/cgi-bin/webhook/send?key={bot_key or WEWORK_BOT_KEY}",
          json={"msgtype": "image", "image": {"base64": b64str, "md5": md5str}},
          timeout=120,
      )
      return res.json()

• mcp_notify/__init__.py:19-19 (registration)

  Registers all tools from the wework module, including 'wework_send_image', by calling its add_tools function on the FastMCP instance.

  wework.add_tools(mcp)

• mcp_notify/wework.py:20-21 (schema)

  Pydantic Field definitions used as default parameters for tool schemas, including bot_key for wework_send_image.

  FIELD_BOT_KEY = Field("", description="企业微信群机器人key，uuid格式，默认从环境变量获取")
  FIELD_TO_USER = Field("", description="接收消息的成员ID，多个用`|`分隔，为`@all`时向该企业应用全部成员发送，默认从环境变量获取")