Feature request: custom base path for SSE server

[marin-h]

I am working on a Kubernetes deployment for hosting many MCP servers our company needs behind a proxy, and Grafana MCP is one of them.

I run the rest of the MCPs using npx + supergateway, which allows adding a base path to SSE servers with a --baseUrl option, but noticed this was not possible using grafana MCP out of the box.

I need this feature to be able to route all requests from our client to the proxy and then be able to forward those requests to the mcp servers configured as downstream servers.

[sd2k]

Fixed by #137