Review an API contract (endpoints, request/response shapes, error codes, auth model) BEFORE implementation for naming consistency, versioning, pagination, idempotency, and alignment with existing endpoints. Distinct from review-hard (post-implementation risk) and repo-consistency-sweep (pattern matching on written code). Use when designing new endpoints or modifying existing API contracts. Do not use when the API is already implemented (use review-hard or repo-consistency-sweep instead).
