twirl

API design and implementation guidance. Use when designing a new API, modifying an existing API, writing API contracts or specifications, or asking an agent to implement API endpoints, clients, or SDKs.

API review guidance. Use when reviewing an API proposal, specification, endpoint change, SDK interface, generated client surface, event contract, documentation, or compatibility-impacting API modification; use to find design defects, compatibility risks, unclear contracts, recovery gaps, REST/HTTP mistakes, SDK ergonomics issues, or unsafe API behavior.