# Idempotency observation conflict 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.

Group supplied attempts by exact scope and idempotency key; find conflicting operation/request or success-result fingerprints and unresolved/stale pending outcomes. Advisory reconciliation only, never retry permission.

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

## Choose for
- Find conflicting idempotency keys before retrying an uncertain agent tool call
- Triage duplicate success receipts and stale pending attempt logs

## 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 0.003 per successful call; payer fees excluded. No verified runtime availability.

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