Weather Hello Agent

A minimal demo of an MCP tool server (weather + greetings) and a LangChain agent that calls those tools.

Features

• MCP server built with fastmcp
• Two example tools
  • /get_today_weather → summary string
  • /greet → “Hello ”
• LangChain agent that auto-discovers and calls the tools

Quick start

git clone https://github.com/<you>/weather-hello-agent.git
cd weather-hello-agent
python -m venv .venv && source .venv/bin/activate
pip install -r requirements.txt
cp .env.example .env      # put your keys here
python -m weatherhello.basic_server &  # run in background
python -m weatherhello.basic_agent     # talk to the agent

Support me

Buy me a coffee at https://coff.ee/josjen