feat: add host option for command-line interface

Author: hqn21

src/protocols_io_mcp/__main__.py

@@ -3,14 +3,15 @@
 
 @click.command()
 @click.option("--transport", default="stdio", type=click.Choice(['stdio', 'http', 'sse']), help="Transport protocol to use [default: stdio]")
+@click.option("--host", default="127.0.0.1", help="Host to bind to when using http and sse transport [default: 127.0.0.1]")
 @click.option("--port", default=8000, help="Port to bind to when using http and sse transport [default: 8000]")
-def main(transport: str, port: int):
+def main(transport: str, host: str, port: int):
     """Run the protocols.io MCP server."""
     print("Starting protocols.io MCP server...")
     if transport == "stdio":
         mcp.run(transport=transport)
     else:
-        mcp.run(transport=transport, port=port)
+        mcp.run(transport=transport, host=host, port=port)
 
 if __name__ == "__main__":
     main()