host.py

import uvicorn
from fastmcp import FastMCP

# Create the FastMCP server
mcp = FastMCP("MathServer")

@mcp.tool()
def sum_numbers(a: int, b: int) -> int:
    """Returns the sum of two numbers."""
    return a + b

if __name__ == "__main__":
    # Create the ASGI app and run it explicitly with uvicorn
    app = mcp.http_app(transport="sse")
    uvicorn.run(app, host="0.0.0.0", port=7860)