api-contract-sync

API specification drift occurs when your OpenAPI or Swagger spec diverges from actual route registrations and handler implementations, leading to undocumented endpoints, stale documentation, and DTO inconsistencies.

You detect undocumented API routes by enforcing cross-reference checks between your API specs and route files, which identifies mismatches and generates a structured report highlighting stale documentation.

The best way to verify DTO consistency is to apply cross-reference checks to your DTOs and API specs, enforcing validation that flags mismatches between data transfer objects and documented endpoints.

Yes, API drift detection applies to changes in route files, API specs, handlers, and DTOs across common stacks, validating alignment and reporting stale endpoints regardless of the specific framework.

You should run API spec validation after updating APIs to validate alignment, catching implementation drift early by verifying that route files, handlers, and DTOs match the OpenAPI or Swagger specifications.