How to Build an MCP Server with Python in 5 Min

You want to give Claude (or any MCP client) access to your own custom tools. Every Python tutorial you find is 2,000+ words and 15 steps. Here's a working MCP server with two tools in under 30 lines. The Code Create a file called notes_server.py: from fastmcp import FastMCP mcp = FastMCP("Notes") # In-memory storage notes: dict[str, str] = {} @mcp.tool def add_note(name: str, content: str) -> str: """Save a note with a given name and content.""" notes[name] = content return f"Saved note '{name}'." @mcp.tool def search_notes(query: str) -> list[dict]: """Search notes by keyword. Returns all notes containing the query string.""" results = [ {"name": name, "content": content} for name, content in notes.items() if query.lower() in name.lower() or query.lower() in content.lower() ] return results if results else [{"message": f"No notes found for '{query}'"}] if __name__ == "__main__": mcp.run() That's the entire server. Two tools, fully typed, ready to connect. Install and Run Install