Agent Tracing
Best Agent Tracing Tools in 2026
Tracing tools make agent runs inspectable: prompts, tool calls, retrieved context, errors, retries, cost, and latency.
Search intent: Choose tracing tooling for debugging production agents and explaining why a run made a decision.
Last reviewed
May 11, 2026
Tools considered
3
Open source options
2
Definition
Agent tracing records the execution path of a run so developers can debug decisions instead of guessing from the final response.
Use cases
- Debugging failed tool calls
- Reviewing retrieved evidence and intermediate messages
- Monitoring latency and cost across model/tool steps
Selection criteria
- Does the trace include tool arguments and outputs?
- Can sensitive data be redacted before storage?
- Can traces feed evaluation and support workflows?
Selection advice
Tracing should be installed before the first serious user pilot. Without traces, every agent bug becomes anecdotal.