OpenTelemetry (OTel) is an open-source observability framework for distributed tracing, metrics, and logs.

OpenTelemetry (OTel) is an open-source observability framework for distributed tracing, metrics, and logs. In an agent platform: instrument each agent run as a trace with spans for LLM calls, tool executions, and memory operations. Capture attributes: model, token count, latency, tool name, success/failure. Export to a backend (Jaeger, Grafana Tempo) for full visibility into agent execution.