Full Stack Developer
mediumapi-contracts-openapi
Why are API contracts important and how do you keep frontend and backend in sync?
Answer
API contracts prevent integration bugs.
**Common strategies:**
- OpenAPI/Swagger specs for REST
- GraphQL schema as the contract
- Shared types generated from schema
- Contract tests in CI
Keep versioning and deprecations explicit, and use consistent error shapes so the frontend can handle failures reliably.
Related Topics
APICollaborationTooling