# MCP Test Weather Server

This project is a small Python MCP server that exposes a `get_weather` tool.
The tool accepts a city name, calls the OpenWeatherMap API, and returns current
temperature, weather description, and humidity.

## What It Contains

- `mcp_server.py`: Defines the MCP server, registers the `get_weather` tool, and
  serves it over Streamable HTTP using Starlette/Uvicorn.
- `agent.py`: Defines a LangGraph workflow that fetches weather data with
  `httpx`.
- `requirements.txt`: Python dependencies for the server.

## Requirements

- Python 3.13 or newer
- An OpenWeatherMap API key

## Setup

Create and activate a virtual environment:

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

Install dependencies:

```bash
pip install -r requirements.txt
```

## Configure Weather API

The weather client in `agent.py` currently uses an OpenWeatherMap API key in the
`API_KEY` constant. For local development, replace it with your own key before
running the server.

## Run The Server

Start the MCP server:

```bash
python mcp_server.py
```

The server listens on:

```text
http://0.0.0.0:7070
```

## Available MCP Tool

### `get_weather`

Gets current weather information for a city.

Input schema:

```json
{
  "city": "Ahmedabad"
}
```

Example response text:

```text
Ahmedabad: 31.2°C, clear sky, humidity 42%
```

If no city is provided, the agent defaults to `Ahmedabad`.