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Merge pull request #34089 from backstage/otel/mcp-tools-call

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feat: Instrument MCP tool calls with semantically appropriate span
This commit is contained in:
Patrik Oldsberg
2026-05-19 10:53:13 +02:00
committed by GitHub
parent 05f13d50c0 828d3d4282
commit 9a88d85d50
21 changed files with 1221 additions and 78 deletions
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.changeset/mcp-actions-backend-otel-tracing.md
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'@backstage/plugin-mcp-actions-backend': patch
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Trace spans are now emitted for MCP `tools/call` invocations, following OpenTelemetry server-side MCP semantic conventions.
.changeset/tracing-service-context-and-baggage.md
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'@backstage/backend-plugin-api': patch
'@backstage/backend-defaults': patch
'@backstage/backend-test-utils': patch
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Added `context` and `propagation` to the alpha `TracingService`. Plugins can bridge OpenTelemetry context across async boundaries via `tracing.propagation.extract(tracing.context.active(), carrier)` followed by `tracing.context.with(ctx, fn)`, and read propagated baggage via `tracing.propagation.getActiveBaggage()` or `tracing.propagation.getBaggage(ctx)`.