feat: Add mcp-session-id header to HTTP request trace attributes #421
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✅ Docs preview readyThe preview is ready to be viewed. View the preview File Changes 0 new, 5 changed, 0 removedBuild ID: e958578b4f8d6bcab5e0eba2 URL: https://www.apollographql.com/docs/deploy-preview/e958578b4f8d6bcab5e0eba2 |
DaleSeo
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Oct 7, 2025
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Thanks, @swcollard, for taking care of this nice-to-have that we discussed!
DaleSeo
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Oct 7, 2025
| raw_operation = "Graphql operation text and metadata used for Tool generation" | ||
| client_name = "The client name that initializes with the MCP Server" | ||
| client_version = "The client version that initializes with the MCP Server" | ||
| session_id = "The value of the Mcp-Session-Id header in the HTTP request" |
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Because the mcp-session-id header is present on both request and response, can we add trace attributes for both, so we can correlate end-to-end?
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DaleSeo
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| if let Some(session_id) = response | ||
| .headers() | ||
| .get("mcp-session-id") | ||
| .and_then(|v| v.to_str().ok()) | ||
| { | ||
| span.record("session_id", tracing::field::display(session_id)); | ||
| } |
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This PR includes the value of the Mcp-Session-Id HTTP header as an attribute of the trace for HTTP requests to the MCP Server