Weather MCP Server

A mini project demonstrating how to build and use a Model Context Protocol (MCP) server with Python.

Features

• Weather Alerts Tool

• Weather Forecast Tool

• SSE Transport

• STDIO Transport

• MCP Client Integration

• Docker Support

• Async Python Implementation

Related MCP server: Weather-MCP-Server

Project Structure

mcpcrashcourse/
│
├── server/
│   └── mcpserver/
│       ├── server.py
│       ├── client-sse.py
│       ├── client-stdio.py
│       ├── Dockerfile
│       └── requirements.txt
│
├── weather.py
├── weather.json
├── client.py
├── README.md
├── pyproject.toml
└── uv.lock

Tools

get_alerts

Returns active weather alerts for a US state.

Example:

get_alerts("CA")

get_forecast

Returns forecast information based on latitude and longitude.

Example:

get_forecast(
    latitude=37.7749,
    longitude=-122.4194
)

Transports

STDIO

Used for local MCP communication.

SSE

Used for remote communication through HTTP.

Running the Server

STDIO

uv run server/mcpserver/server.py

SSE

Configure transport as:

mcp.run(transport="sse")

Then:

uv run server/mcpserver/server.py

Running Clients

SSE Client

uv run server/mcpserver/client-sse.py

STDIO Client

uv run server/mcpserver/client-stdio.py

Docker

Build:

docker build -t weather-mcp .

Run:

docker run weather-mcp

Technologies Used

• Python

• MCP

• FastMCP

• HTTPX

• AsyncIO

• Docker

• SSE

• STDIO

Learning Outcomes

• Building MCP tools

• Creating MCP servers

• Working with MCP clients

• Using SSE transport

• Using STDIO transport

• Tool invocation

• Agent-tool communication

• Dockerizing MCP applications