Platform Engineering
OpenAPI 3.x Validator
Paste an OpenAPI 3.x specification in YAML or JSON to validate required fields, operation structure, response codes, $ref integrity, and operationId presence. Runs entirely in your browser.
No data is transmitted — everything runs locallyTool
About this tool
OpenAPI 3.x Validator
The OpenAPI Validator checks 3.0.x and 3.1.x specifications for required fields, operation structure, response codes, $ref integrity, and operationId presence.
• Validate an API spec before committing to catch structural errors before codegen
• Debug a 'Missing required field' error from your OpenAPI toolchain
• Check all paths have operationId set before generating an SDK
• Verify $ref paths resolve correctly within the specification document
Affiliate disclosure
Enterprise cloud infrastructure at scale. Google Cloud provides compute, Kubernetes, CI/CD, and developer tooling.
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External site · Independent provider · We may receive a commission · Not a recommendation
FAQ
What does this tool tell you?
The OpenAPI Validator checks 3.0.x and 3.1.x specifications for required fields, operation structure, response codes, $ref integrity, and operationId presence.
What affects the result most?
Validates OpenAPI 3.x specification structure (3.0.x and 3.1.x). Checks required fields: openapi version string, info.title, info.version, paths. Validates path item structure: operation objects, response codes, parameter locations.
How should I use the result?
Treat the tool's output as a first-pass check, not a proof of correctness. A clean pass means no issues in the patterns this tool recognizes; a failure points to a specific problem you can investigate in your source. The underlying spec is the authoritative source for edge cases.
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