Option to Mount SSE Server to Existing ASGI Server #311
Comments
comfuture
added a commit
to comfuture/python-sdk
that referenced
this issue
Mar 18, 2025
Fixes modelcontextprotocol#311 Add option to mount SSE server to an existing ASGI server. * Add a new method `sse_app` in `src/mcp/server/fastmcp/server.py` to return an instance of the SSE server app. * Update the `run_sse_async` method in `src/mcp/server/fastmcp/server.py` to use the new `sse_app` method. * Update the documentation in `README.md` to include instructions on how to mount the SSE server to an existing ASGI server. * Fix the example in `README.md` to use `app.mount('/', mcp.sse_app())` instead. --- For more details, open the [Copilot Workspace session](https://copilot-workspace.githubnext.com/modelcontextprotocol/python-sdk/issues/311?shareId=XXXX-XXXX-XXXX-XXXX).
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
The SSE server in fastmcp currently operates as a Starlette app. In addition to running it as a standalone server, it would be beneficial to provide an option to mount it to an existing ASGI server.
Suggested solution
Currently, the
run(transport="sse")method and therun_sse_async()method include the code for actually serving the application. It would be better to separate this functionality and allow users to obtain an instance of the SSE server app via a method likemcp.sse_app()ormcp.starlette_app().The text was updated successfully, but these errors were encountered: