Show HN: I added webhook response support for MCP tool calls in asyncmcp

github.com

2 points by bharatgel a day ago

Building on asyncmcp, a library for custom transport layers for Model Context Protocol (MCP), I added a custom transport for webhook support that lets MCP server tools respond asynchronously via webhook. When async marked tools are called, the result gets sent to the registered endpoint instead of blocking the connection.

This is still experimental but provides a way to add webhook support to MCP. You can clone the repo and try the streamable_http_webhook examples.