api_design

Designing a RESTful API with OpenAPI involves defining endpoints, HTTP methods, and status codes in a spec-first workflow. This approach guides you through mocking, implementation, testing, and documentation to ensure consistency and best practices from the outset.

The best way to version an API contract is to apply versioning strategies directly within your OpenAPI or GraphQL schema definitions. Spec-first development ensures versioning rules are established and documented before any implementation code is written.

GraphQL schema definition structures API endpoints around a typed graph, while OpenAPI defines discrete RESTful endpoints and HTTP methods. Both approaches facilitate industry-standard API documentation, response formatting, and contract testing within a spec-first workflow.

Yes, a spec-first API design workflow explicitly supports generating documentation and running contract testing. Defining your API schema first allows automated workflow stages including mocking, security checks, testing, and final documentation generation.

You need spec-first development for microservices when starting a new service to define the API contract using OpenAPI before writing implementation code. This ensures robust endpoint design, consistent response formatting, and automated contract testing across services.