API Documentation Formats: OpenAPI, AsyncAPI, GraphQL SDL
Compare API documentation formats: OpenAPI for REST, AsyncAPI for event-driven, GraphQL SDL for schema, and RAML for resource modeling.
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API Documentation Formats: OpenAPI, AsyncAPI, GraphQL SDL, and RAML Choosing the right specification format for your API is a decision that affects tooling support, team workflow, onboarding time, and how well your documentation stays in sync with your implementation. The four formats with significant adoption today — OpenAPI, AsyncAPI, GraphQL SDL, and RAML — each evolved to solve a different problem and bring different strengths to that problem. This guide compares them on their technical capabilities, tooling ecosystems, and the use cases each is genuinely suited for. --- OpenAPI (Formerly Swagger) OpenAPI Specification is the dominant standard for describing synchronous REST HTTP APIs. The OpenAPI Initiative (under the Linux Foundation) maintains the spec; OpenAPI 3.1.0 is the current…
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