opentelemetry-propagator-b3 has 4.5M monthly downloads and 3K GitHub stars. Version 1.43.0 supports Python 3.10+, first published in 2021.
It is actively maintained under a permissive license, last released in Jun 2026.
It is built on top of opentelemetry-api and typing-extensions. It is used by 26 tracked packages, including aws-opentelemetry-distro, splunk-opentelemetry and svc-infra.
GitHub topics include opentelemetry, tracecontext and correlationcontext.
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Dependencies
- opentelemetry-api ~=1.3
- typing-extensions >=4.5.0
Used By
- aws-opentelemetry-distro
- splunk-opentelemetry
- svc-infra
- fastapi-factory-utilities
- aws-opentelemetry-distro-genai-beta
- middleware-io
- lilypad-sdk
- elven-opentelemetry-instrumentation-py
- harness-sdk
- middleware-apm
- hypertrace-agent
- opentelemetry-launcher
- chaostoolkit-opentracing
- brokle
- cisco-telescope
- reliably-app
- middleware-apm-dev
- impulse-telemetry
- tyke-agent
- middleware-io-k8s
- kei-agent-py-sdk
- ndc-sdk-python
- baotool
- otel-file-exporter
- yiyuanh-test-fork-aws-opentelemetry-distro
- python-base-agent