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WeCom Bot MCP Server

by loonghao
GitHub
Python
MIT License
33
  • Linux
  • Apple
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Integrations

  • Provides a Model Context Protocol (MCP) server implementation for WeCom (WeChat Work) bot, enabling sending of text, markdown, image and file messages to WeCom groups, with support for @mentions and message history tracking.

WeCom Bot MCP Server

A Model Context Protocol (MCP) compliant server implementation for WeCom (WeChat Work) bot.

English | 中文

Features

  • Support for multiple message types:
    • Text messages
    • Markdown messages
    • Image messages (base64)
    • File messages
  • @mention support (via user ID or phone number)
  • Message history tracking
  • Configurable logging system
  • Full type annotations
  • Pydantic-based data validation

Requirements

  • Python 3.10+
  • WeCom Bot Webhook URL (obtained from WeCom group settings)

Installation

There are several ways to install WeCom Bot MCP Server:

Using Smithery (For Claude Desktop):
npx -y @smithery/cli install wecom-bot-mcp-server --client claude
Using VSCode with Cline Extension:
  1. Install Cline Extension from VSCode marketplace
  2. Open Command Palette (Ctrl+Shift+P / Cmd+Shift+P)
  3. Search for "Cline: Install Package"
  4. Type "wecom-bot-mcp-server" and press Enter

2. Manual Installation

Install from PyPI:
pip install wecom-bot-mcp-server
Configure MCP manually:

Create or update your MCP configuration file:

// For Windsurf: ~/.windsurf/config.json { "mcpServers": { "wecom": { "command": "uvx", "args": [ "wecom-bot-mcp-server" ], "env": { "WECOM_WEBHOOK_URL": "your-webhook-url" } } } }

Configuration

Setting Environment Variables

# Windows PowerShell $env:WECOM_WEBHOOK_URL = "your-webhook-url" # Optional configurations $env:MCP_LOG_LEVEL = "DEBUG" # Log levels: DEBUG, INFO, WARNING, ERROR, CRITICAL $env:MCP_LOG_FILE = "path/to/custom/log/file.log" # Custom log file path

Log Management

The logging system uses platformdirs.user_log_dir() for cross-platform log file management:

  • Windows: C:\Users\<username>\AppData\Local\hal\wecom-bot-mcp-server
  • Linux: ~/.local/share/hal/wecom-bot-mcp-server
  • macOS: ~/Library/Application Support/hal/wecom-bot-mcp-server

The log file is named mcp_wecom.log and is stored in the above directory.

Usage

Starting the Server

wecom-bot-mcp-server

Usage Examples (With MCP)

# Scenario 1: Send weather information to WeCom USER: "How's the weather in Shenzhen today? Send it to WeCom" ASSISTANT: "I'll check Shenzhen's weather and send it to WeCom" await mcp.send_message( content="Shenzhen Weather:\n- Temperature: 25°C\n- Weather: Sunny\n- Air Quality: Good", msg_type="markdown" ) # Scenario 2: Send meeting reminder and @mention relevant people USER: "Send a reminder for the 3 PM project review meeting, remind Zhang San and Li Si to attend" ASSISTANT: "I'll send the meeting reminder" await mcp.send_message( content="## Project Review Meeting Reminder\n\nTime: Today 3:00 PM\nLocation: Meeting Room A\n\nPlease be on time!", msg_type="markdown", mentioned_list=["zhangsan", "lisi"] ) # Scenario 3: Send a file USER: "Send this weekly report to the WeCom group" ASSISTANT: "I'll send the weekly report" await mcp.send_message( content=Path("weekly_report.docx"), msg_type="file" )

Direct API Usage

Send Messages
from wecom_bot_mcp_server import mcp # Send markdown message await mcp.send_message( content="**Hello World!**", msg_type="markdown" ) # Send text message and mention users await mcp.send_message( content="Hello @user1 @user2", msg_type="text", mentioned_list=["user1", "user2"] )
Send Files
from wecom_bot_mcp_server import send_wecom_file # Send file await send_wecom_file("/path/to/file.txt")
Send Images
from wecom_bot_mcp_server import send_wecom_image # Send local image await send_wecom_image("/path/to/image.png") # Send URL image await send_wecom_image("https://example.com/image.png")

Development

Setup Development Environment

  1. Clone the repository:
git clone https://github.com/loonghao/wecom-bot-mcp-server.git cd wecom-bot-mcp-server
  1. Create a virtual environment and install dependencies:
# Using uv (recommended) pip install uv uv venv uv pip install -e ".[dev]" # Or using traditional method python -m venv venv source venv/bin/activate # On Windows: venv\Scripts\activate pip install -e ".[dev]"

Testing

# Using uv (recommended) uvx nox -s pytest # Or using traditional method nox -s pytest

Code Style

# Check code uvx nox -s lint # Automatically fix code style issues uvx nox -s lint_fix

Building and Publishing

# Build the package uv build # Build and publish to PyPI uv build && twine upload dist/*

Project Structure

wecom-bot-mcp-server/ ├── src/ │ └── wecom_bot_mcp_server/ │ ├── __init__.py │ ├── server.py │ ├── message.py │ ├── file.py │ ├── image.py │ ├── utils.py │ └── errors.py ├── tests/ │ ├── test_server.py │ ├── test_message.py │ ├── test_file.py │ └── test_image.py ├── docs/ ├── pyproject.toml ├── noxfile.py └── README.md

License

This project is licensed under the MIT License - see the LICENSE file for details.

Contact

This server cannot be installed

-
security - not tested
A
license - permissive license
-
quality - not tested

remote-capable server

The server can be hosted and run remotely because it primarily relies on remote services or has no dependency on the local environment.

Tools

A server for sending messages via WeCom bots using FastMCP, supporting asynchronous communication and message tracking through webhooks.

  1. Features
    1. Requirements
      1. Installation
        1. 1. Automated Installation (Recommended)
        2. 2. Manual Installation
      2. Configuration
        1. Setting Environment Variables
        2. Log Management
      3. Usage
        1. Starting the Server
        2. Usage Examples (With MCP)
        3. Direct API Usage
      4. Development
        1. Setup Development Environment
        2. Testing
        3. Code Style
        4. Building and Publishing
      5. Project Structure
        1. License
          1. Contact

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