fastapi (0.143.3-1) unstable; urgency=medium FastAPI no longer configures OpenTelemetry exporters from the OTEL_* environment variables by default. Applications that relied on it to export traces, metrics and logs to an OTLP endpoint (for example by setting OTEL_EXPORTER_OTLP_ENDPOINT) stop exporting after the upgrade. To keep the previous behavior, set FASTAPI_OTEL_AUTO_CONFIGURE=true in the environment, or pass telemetry={"auto_configure": True} to FastAPI(). Applications that set up their own providers and exporters are not affected. -- Sandro Tosi Sat, 17 Oct 2026 16:23:27 -0400