Validate OpenAPI/Swagger specs for common issues
OpenAPI (formerly Swagger) is the standard way to describe RESTful APIs. This page lints your OpenAPI documents for common quality issues so your contracts are consistent, discoverable, and easy to consume.
An OpenAPI document defines endpoints, methods, parameters, request/response bodies, authentication, and reusable components in YAML or JSON. Clear, validated specs power documentation, code generation, testing, and governance across teams.
The linter checks for missing descriptions, ambiguous status codes, inconsistent schemas, and opportunities to reuse components. It encourages consistent naming, explicit content types, and complete examples—reducing friction for SDKs and client integrations.
Consider a POST /users with requestBody but no schema or example. Linting flags this and suggests adding a JSON Schema under components.schemas.User and referencing it via $ref, plus documenting 201 and 400 responses with example payloads.
Paste your spec to see quick feedback. Use it during design reviews and CI to keep specs readable and tool‑friendly. Pair with contract testing to ensure implementations stay aligned.
Healthy API ecosystems start with high‑quality specs. Lint early and often to produce documentation and SDKs that developers love.