How to configure this mcp on N8N

[fredga]

Hi,

First of all, thank you for providing an MCP server for Prometheus—this is a very useful project!

I am trying to connect n8n to the Prometheus MCP Server using the community node n8n-nodes-mcp in SSE (Server-Sent Events) mode.
Community node link

I have entered the SSE URL (http://:8080/sse), the connection timeout, and added the required headers (Accept: text/event-stream as well as Basic or Bearer authentication).

However, I am having trouble establishing a working connection (authentication errors, session_id issues, etc).
The documentation for n8n and the server does not specify the exact configuration to use (headers, session_id handling, etc).
error: INFO: 127.0.0.1:60776 - "GET / HTTP/1.1" 404 Not Found

My questions:

What are the exact parameters and headers to set in the n8n node for a successful SSE connection?
Should the session_id be included in the URL or in the headers?
Is there an example configuration (or node export) for n8n with this server?
Thank you in advance for your help and for your work on this project!