Caiyun Weather MCP Server
Most file and storage access work still happens through a UI a human drives. MCP MCP server moves it into the conversation instead. Caiyun Weather MCP Server.
Caiyun Weather provides a hosted Streamable HTTP MCP server, so you can use the weather tools without installing or running this package locally.
The server publishes 11 tools. What each one is for:
get_realtime_weather — Get real-time weather data for a specific locationParameters — - lng: The longitude of the locationlat — The latitude of the locationHumidity — Wind speed and directionget_hourly_forecast — Get an hourly weather forecast for a configurable number of hourshours — The number of hours to return (1–360, defaults to 72)Temperature — Weather conditionsget_weekly_forecast — Get daily weather forecast for the next 7 daysget_historical_weather — Get historical weather data for the past 24 hoursget_weather_alerts — Get weather alerts for a specific locationDebugging — Run: bash npx @modelcontextprotocol/inspector \ uv \ --directory /ABSOLUTE/PATH/TO/PARENT/FOLDER/mcp-caiyun-weather \ run \ mcp-caiyun-weatherBecause this one is hosted, setup is mostly authentication — you point your client at the endpoint and approve access. Nothing runs on your machine, so there is no runtime to keep patched.
Configuration is passed through the environment: CAIYUN_WEATHER_API_TOKEN, YOUR_CAIYUN_WEATHER_API_KEY. Treat anything key-shaped as a real credential — scope it to the minimum the server needs, and rotate it if it ever lands in a shared config.
This sits in the file and storage access group, where several servers overlap in what they claim to do but differ sharply once you actually set them up. MCP's toolset — get_realtime_weather, Parameters, lat and 8 more — is a fair guide to whether it matches your workflow.
We check each listing at SyncDev against the project's documentation before it goes live — if something here drifts out of date, it is a bug worth reporting.
| Tool | What it does |
|---|---|
| get_realtime_weather | Get real-time weather data for a specific location |
| Parameters | - lng: The longitude of the location |
| lat | The latitude of the location |
| Humidity | Wind speed and direction |
| get_hourly_forecast | Get an hourly weather forecast for a configurable number of hours |
| hours | The number of hours to return (1–360, defaults to 72) |
| Temperature | Weather conditions |
| get_weekly_forecast | Get daily weather forecast for the next 7 days |
| get_historical_weather | Get historical weather data for the past 24 hours |
| get_weather_alerts | Get weather alerts for a specific location |
| Debugging | Run: bash npx @modelcontextprotocol/inspector \ uv \ --directory /ABSOLUTE/PATH/TO/PARENT/FOLDER/mcp-caiyun-weather \ run \ mcp-caiyun-weather |
# claude_desktop_config.json
# Can find location through:
# Hamburger Menu -> File -> Settings -> Developer -> Edit Config
{
"mcpServers": {
"caiyun-weather": {
"command": "uvx",
"args": ["mcp-caiyun-weather"],
"env": {
"CAIYUN_WEATHER_API_TOKEN": "YOUR_API_KEY_HERE"
}
}
}
}Configuration as documented by the project. Restart the client after saving.
| Variable | Description | Required |
|---|---|---|
| CAIYUN_WEATHER_API_TOKEN | Credential the server authenticates with. | Yes |
| YOUR_CAIYUN_WEATHER_API_KEY | Credential the server authenticates with. | Yes |
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