Weather API MCP server

This MCP server provides weather services, allowing you to retrieve weather alerts and forecasts through a standardized interface that can be connected to Claude.

Installation

To install and set up the Weather MCP server:

1. Create and activate a virtual environment:

   python -m venv .venv
   source .venv/bin/activate
   

2. Install the required dependencies:

   uv pip install "mcp[cli]" httpx
   

Running the Server

You can start the Weather MCP server using either of these commands:

python run_claude.py

Or alternatively:

python main.py

The server will run on localhost port 8000 by default.

Connecting to Claude

If you encounter a [weather] Server transport closed error when loading this MCP in Claude, use the HTTP transport mode:

1. Make sure the server is running (using the commands above)
2. In Claude, connect to the MCP using:
   • URL: http://localhost:8000
   • Or load the MCP through Claude's settings panel

Available Weather Functions

The Weather MCP provides two main functions:

Get Weather Alerts

Retrieve weather alerts for a specific state:

get_alerts(state)

Parameters:

• state: The state code for which you want to retrieve weather alerts

Get Weather Forecast

Retrieve weather forecast for a specific location:

get_forecast(latitude, longitude)

Parameters:

• latitude: The latitude coordinate of the location
• longitude: The longitude coordinate of the location

How to add this MCP server to Cursor

There are two ways to add an MCP server to Cursor. The most common way is to add the server globally in the ~/.cursor/mcp.json file so that it is available in all of your projects.

If you only need the server in a single project, you can add it to the project instead by creating or adding it to the .cursor/mcp.json file.

Adding an MCP server to Cursor globally

To add a global MCP server go to Cursor Settings > MCP and click "Add new global MCP server".

When you click that button the ~/.cursor/mcp.json file will be opened and you can add your server like this:

{
    "mcpServers": {
        "cursor-rules-mcp": {
            "command": "npx",
            "args": [
                "-y",
                "cursor-rules-mcp"
            ]
        }
    }
}

Adding an MCP server to a project

To add an MCP server to a project you can create a new .cursor/mcp.json file or add it to the existing one. This will look exactly the same as the global MCP server example above.

How to use the MCP server

Once the server is installed, you might need to head back to Settings > MCP and click the refresh button.

The Cursor agent will then be able to see the available tools the added MCP server has available and will call them when it needs to.

You can also explictly ask the agent to use the tool by mentioning the tool name and describing what the function does.