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.
Calculations run locally in your browserTool
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
Next step
Continue with Utility Matrix tools for the next decision in this workflow.
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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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