Validate OpenAPI 3.x and Swagger 2.0 specifications. Check for errors, missing fields, and get detailed validation reports.
OpenAPI Specification
Why Use OpenAPI Validator?
OpenAPI validation ensures your API specification is correct before generating documentation, client SDKs, or server stubs. Catch errors early in the API design process.
FAQ
What versions are supported?
The validator supports OpenAPI 3.0.x, 3.1.x, and Swagger 2.0 specifications. OpenAPI 3.x is recommended for new projects.
Can I validate YAML files?
Yes, both JSON and YAML formats are supported. You can paste YAML directly or upload a .yaml/.yml file.
What errors does it check for?
The validator checks for required fields (info, title, version, paths), valid path formats, response definitions, and schema structures.