Simulation run on this device. Scenario values are not sent anywhere — the engine is fully local.
agents simulation · free
Agent Trace Replay
Replay model/tool spans on a timeline with latency, errors, and concurrency.
Where did time and failure accumulate in this agent trace?
Engine 1.0.0 · simulation
- Spans
- 5
- Total wall time
- 6.51 s
- Slowest span
- tool:search
- Failed spans
- 1
| Span | Duration | Status |
|---|---|---|
| plan | 240 ms | ok |
| retrieve | 1180 ms | ok |
| rerank | 90 ms | ok |
| tool:search | 4200 ms | error |
| answer | 800 ms | ok |
- highFailure span: tool:search
4200 ms and status "error" — attribute the run failure here.
Attribute the run to a span, then add the instrumentation that would have caught it earlier.
Method
- Parses spans (label, duration, status), aggregates time by span kind, and surfaces the failing or dominant span.
- Attribution first: which span owns the run, then what instrumentation would have caught it earlier.