API Spec Generator
Generate OpenAPI/Swagger specs from JSON sample data for API documentation.
Writing an OpenAPI or Swagger specification by hand from scratch is slow, and documenting an API that already exists but was never formally specified usually means someone has to reverse-engineer its shape from an actual example response instead of a written contract that was never created in the first place. This tool generates an OpenAPI or Swagger spec directly from JSON sample data, inferring the structure and types from an actual response rather than requiring the specification written manually field by field.
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Useful for bootstrapping API documentation from a real example response instead of writing YAML by hand, documenting an existing but previously undocumented endpoint by feeding in one of its actual responses, or generating a starting spec that can be refined rather than built entirely from nothing.
Key features
- Clean interface
- Fast processing
- No signup required
- Works offline