Typed trace timeline
Agents SDK turns, tools, handoffs, guardrails, and MCP calls are first-class spans.
Flight recorder for OpenAI agents
Your agent failed in production. Here's exactly what happened.
Capture every Agents SDK run as a structured trace. Inspect the failed span, replay it against GPT-5.6, and turn the fix into a regression eval.
EARLY ACCESS / SELF-HOSTED
RECORDER ONLINE
TRACE / REFUND AGENT
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customer · turn“Refund the duplicate charge.”
0.42s -
lookup_order · tool_callorder_id: “ord_142”
0.31s -
refund_order · tool_callinvalid_tool_arguments
FAIL
CAPTURED / FAILED
{"amount": "12.OO"}
REPLAY / PASSED
{"amount": 12}
✓ FAILURE FIXED6 ASSERTIONS · RUN ALL GREEN
01 CAPTURE•02 INSPECT•03 REPLAY GPT-5.6•04 DIFF RED→GREEN•05 GENERATE EVAL•06 RUN ALL GREEN•
FLIGHT PLAN / 01
From production failure to permanent regression test.
One continuous path. No raw-log archaeology.
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01
Capture the run
One tracing processor records turns, tools, handoffs, guardrails, and MCP calls as typed spans.
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02
Inspect the red span
Read the exact prompt, arguments, output, timing, and failure—without scanning a wall of JSON.
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03
Replay on GPT-5.6
Re-drive captured context while recorded tool outputs act as safe, side-effect-free stubs.
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04
Lock in the fix
Generate structured assertions from the successful replay and run them as a regression eval.
INSTRUMENT PANEL / 02
Built for the code-first agent stack.
Live GPT-5.6 replay
Replay through one Responses API boundary and compare the original with the new output.
Evals from real runs
Turn fixed production behavior into structured, repeatable assertions.
Ingest-side redaction
Secret-like values are removed before trace payloads reach persistence.
Readable red→green diffs
See tool arguments, outputs, token use, and verdict changes in one review surface.
Self-hosted by default
Run Phoenix and PostgreSQL on one box. Keep operational traces in your infrastructure.
RECORDER GUARANTEES / 03
A debugging surface you can trust with production evidence.
- Before storage
- Secret redaction
- Captured tools
- Side-effect-free replay stubs
- Model access
- One OpenAI module
- Deployment
- Phoenix + PostgreSQL
READY FOR THE NEXT FAILURE?