API
OpenAPI Validator
Separate errors from quality warnings and export a deterministic local validation report.
How this tool works
Validate OpenAPI 3.x syntax, required structure, operations, and local references.
This focused validator does not implement every semantic rule or resolve remote references.
Examples
- Detect a missing info.version.
- Find a duplicate operationId.
- Report an undefined component reference.
Common use cases
Common mistakes
- This focused validator does not implement every semantic rule or resolve remote references.
- Validate the output in the system that will consume it.
- Use synthetic data when sharing debugging evidence.
Privacy and limitations
Processing is local to this browser tab. Device, extension, clipboard, and shared-screen risks still apply, so redact secrets before using any browser tool.
Representative valid workflow
Valid example
Detect a missing info.version.
Expected: Use the tool output only after validating it in the receiving system.
Failure workflow
Invalid/failure example
This focused validator does not implement every semantic rule or resolve remote references.
QA checklist
- Exercise a valid input.
- Exercise malformed or unsupported input.
- Verify copy or download output.
- Confirm the input remains local during the interaction.
Documented limitation
This focused validator does not implement every semantic rule or resolve remote references.
Invalid or unsafe assumption
Invalid/failure example
A document without openapi, info, and paths does not meet the minimum OpenAPI structure.
Mistakes to avoid
- Treating warnings as syntax errors.
- Reusing operationId values.
- Assuming a local $ref target exists without resolving its JSON Pointer.
Limits of this workflow
The validator implements focused structural and QA rules, not every possible semantic rule.
Remote references are rejected instead of fetched.
Local-processing and privacy boundary
Validation and report export remain local; specifications are never submitted to a service.
Practical workflow
- Parse YAML or JSON.
- Fix syntax and required-field errors.
- Review operation and documentation warnings.
- Export the report for a synthetic or approved specification.
Official references
FAQ
Does the OpenAPI Validator upload my input?
No. The operation runs in the browser and does not send tool input to a DevPouch processing service.
What are the limits of the OpenAPI Validator?
This focused validator does not implement every semantic rule or resolve remote references.
Does a passing report prove the API implementation is correct?
No. It evaluates the document; contract tests must compare the running API separately.