Cloudflare adds OpenTelemetry startActiveSpan support to Workers
irvinebroque · x · 2026-07-29
Cloudflare is adding more OpenTelemetry tracing APIs to the Workers runtime.
- The runtime now includes tracing.startActiveSpan(name, callback, ...args).
- Developers call span.end() explicitly when the operation is finished.
- Cloudflare says this enables OpenTelemetry tracing with zero dependencies inside Workers.
Related event: Cloudflare Workers Introduces Cross-Async Tracing API(2 posts)→
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