Tracebox

Product Hunt listing

Tracebox

See exactly what your AI agent saw.

Tracebox hero

What is it?

Tracebox is a black box recorder for AI agents. It captures the full trajectory of a run — observations, decisions, tool calls, results, and artifacts — as an append-only, hash-chained event stream.

Built for developers shipping tool-using agents who need to replay a run, inspect why a decision was made, compare two versions, and fork from any event.

Key features

  • Agent recording
  • Timeline inspection
  • Step-through replay
  • First-divergence compare
  • Run forking
  • JavaScript + Python SDKs
  • MCP server for Cursor / Claude
  • Secret redaction + hash chains

Maker comment

After enough “the agent did something weird” moments, I wanted a flight recorder more than a chat log. Tracebox records what the agent saw, what it decided, which tools ran, and where two versions diverged. This is an early MVP — I’d love feedback on the replay/compare UX.