Workers - Workers tracing now supports custom spans
UpdateUnverifiedAdded Sep 24, 2026
You can now create custom trace spans in your Workers code using tracing.enterSpan() . Custom spans appear alongside the automatic platform instrumentation (fetch calls, KV reads, D1 queries, and other platform operations) in your traces and OpenTelemetry exports, with correct parent-child nesting.
Topics: Observability, Developer tools
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