Show HN: Traccia – Control what AI agents can do

Traccia is an open-source, production-ready Python SDK built on OpenTelemetry that provides distributed tracing, token and cost tracking, evaluation, governance evidence, and runtime policy enforcement for AI agents and LLM applications. It offers framework-agnostic integrations for OpenAI Agents, LangGraph, CrewAI, and LangChain, plus runtime policies via @govern, passive guardrail detection, and offline evaluation with CI gating through the traccia eval CLI. It is available on PyPI and supports OTLP-compatible exporters such as Grafana Tempo, Jaeger, Zipkin, and SigNoz.