Weather China

🇨🇳 中文  |  🇺🇸 English

A Model Context Protocol (MCP) server that provides real-time weather and 3-day forecast for Chinese cities, powered by QWeather (和风天气) API.

Inspiration: This project is a learning exercise by the author, inspired by the MCP server weather tutorial on modelcontextprotocol.io — which demonstrated building a US weather MCP server. This is the Chinese weather counterpart, adapted for the QWeather API.

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✨ Features

• Real-time weather — temperature, feels-like, humidity, wind, visibility, and more
• 3-day forecast — daily high/low, day/night weather, humidity, wind
• MCP-native — works with any MCP-compatible client (Claude Code, Codex, OpenClaw, etc.)
• Secure — API credentials stored in .env, never committed to Git

📋 Prerequisites

Requirement	Description
Python	≥ 3.11
uv	Python package manager (install)
QWeather Account	Free tier: 1,000 calls/day. Register at console.qweather.com

After registering on QWeather Console:

1. Create a project → get your API Key
2. Go to Settings → copy your dedicated API Host (format: xxx.xxx.qweatherapi.com)

🚀 Quick Start

# 1. Clone the repo
git clone <your-repo-url>
cd weather-china

# 2. Set up environment variables
cp .env.example .env
# Edit .env and fill in your QWeather API Key & API Host

# 3. Install dependencies
uv sync

# 4. Run the server (for testing)
uv run weather.py

🔧 MCP Client Configuration

Claude Code

Add to .mcp.json in your project root (or ~/.claude/mcp.json for global):

{
  "mcpServers": {
    "weather-china": {
      "command": "uv",
      "args": [
        "--directory",
        "/path/to/weather-china",
        "run",
        "weather.py"
      ]
    }
  }
}

Restart Claude Code or run /mcp reload to pick up the change.

Codex (OpenAI)

In Codex, open Settings → MCP Servers → Add:

{
  "mcpServers": {
    "weather-china": {
      "command": "uv",
      "args": [
        "--directory",
        "/path/to/weather-china",
        "run",
        "weather.py"
      ]
    }
  }
}

OpenClaw

Add to your OpenClaw MCP configuration file:

mcp_servers:
  weather-china:
    command: uv
    args:
      - --directory
      - /path/to/weather-china
      - run
      - weather.py

Other MCP Clients (Generic stdio)

Any MCP client that supports stdio transport:

{
  "mcpServers": {
    "weather-china": {
      "command": "uv",
      "args": ["--directory", "/path/to/weather-china", "run", "weather.py"],
      "env": {
        "QWEATHER_API_KEY": "<your-api-key>",
        "QWEATHER_API_HOST": "<your-api-host>"
      }
    }
  }
}

Note: If your client doesn't inherit shell environment variables, pass QWEATHER_API_KEY and QWEATHER_API_HOST via the env field as shown above. When using .env file, the server loads them automatically.

🛠 Available Tools

get_weather

Get real-time weather for a Chinese city.

Parameters:
  city: string — City name (e.g., "北京", "上海", "广州")

get_forecast

Get 3-day weather forecast for a Chinese city.

Parameters:
  city: string — City name (e.g., "北京", "上海", "广州")

📁 Project Structure

weather-china/
├── weather.py          # MCP server — main entry point
├── main.py             # Placeholder entry
├── .env.example        # Environment variable template
├── .env                # Your credentials (gitignored)
├── .gitignore
├── .mcp.json           # Claude Code MCP config (example)
├── pyproject.toml      # Python project metadata & dependencies
├── uv.lock             # Dependency lock file
├── README.md           # English readme
└── README.zh.md        # Chinese readme

🔒 Security

• .env is listed in .gitignore — never commit your API credentials
• .env.example provides a template for others to set up their own credentials
• Both QWEATHER_API_KEY and QWEATHER_API_HOST are read from environment variables, not hardcoded

📄 License

MIT