# Replay trace divergence check

Build-time release reference. Runtime readiness, deployment, payment settlement and external indexing are not evaluated here. Prices are proposed; this file cannot authorize execution or payment.

Align two supplied execution traces by stable step ID, distinguish reordered/missing/extra steps and compare operation, canonical JSON requests, outcomes and result presence. Returns digest evidence without executing a replay.

Release: 0.29.0. Built: 2026-10-06T15:38:00Z.

## Choose for
- Locate deterministic replay divergence between recorded agent runs
- Compare step-level requests and outputs after a tool or prompt upgrade

## Outside this profile
- Executing tools, sending messages, retrying effects, restoring state, or contacting live services
- Authenticating evidence, verifying signatures or identities, granting permission, or enforcing authorization
- Inferring facts omitted from the supplied artifact snapshot or guaranteeing exactly-once execution

Proposed nominal USD 0.005 per successful call; payer fees excluded. No verified runtime availability.

- [Exact release contract](/reference/services/replay-divergence-check.json)
- [Input schema](/reference/schemas/replay-divergence-check.input.json)
- [Output schema](/reference/schemas/replay-divergence-check.output.json)
- [Fixed example](/reference/examples/replay-divergence-check.json)
- [Complete HTML reference](/discover/tools/replay-divergence-check)