1from fastmcp import FastMCP 2 3mcp = FastMCP("demo-stdio") 4 5@mcp.tool() 6def echo(payload: dict) -> dict: 7 return {"received": payload} 8 9if __name__ == "__main__": 10 # This runs an MCP server over stdio (stdin/stdout). 11 mcp.run() 12 13 14