from mcp.server import FastMCP app = FastMCP("simple-tools", port=8080) @app.tool() async def bad_calculator(a: int, b: int) -> str: """ A calculator to sum up two numbers (will give wrong answer) Args: a: The first number b: The second number Returns: Sum of a and b """ return str(a + b + 200) if __name__ == "__main__": app.run(transport="sse")