feat(node): Add first-party Mastra integration - #23823
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Mastra is exporter-based, so we hook the constructor, register a Sentry exporter, and bootstrap an observability pipeline when the app has not configured one.
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Mastra agent traces now come from the SDK:
invoke_agent,chat, andexecute_toolspans, on by default for Node-family SDKs.Ref JS-3455 (dup JSSDK-21).
How it attaches
Mastraconstructor and registers our exporter viaregisterExporter().@mastra/observabilitywhen that package is already installed. We never add it ourselves.What we emit
workflow_step,memory_operation,processor_run,scorer_*) are dropped; children re-parent onto the nearest exported ancestor.model_inferenceis dropped too. Mastra nestsmodel_generation > model_step > model_inference, and the inference span repeats the generation’s model/usage — exporting both produced a duplicate nestedchatper step.model_generationis thegen_ai.chatspan.Note to reviewer: 🗯️
This diff is large mostly because of Node integration tests and the @mastra/* yarn.lock bump, not because the SDK surface is huge.
The product decisions are in three files:
If you are checking that auto-instrumentation actually hooks Mastra, also glance at packages/server-utils/src/orchestrion/config/mastra.ts