About
OpenAPI Definition Designer is a web-based editor for creating OpenAPI 3 definitions. It supports adding schemas, paths, operations, parameters, request bodies, responses, and API security definitions, with JSON and YAML views for editing and saving definitions.
The product is aimed at developers who need to draft or maintain OpenAPI specifications in the browser. The pricing page shows a saved-definitions area and a workflow for creating new definitions, but it does not state any numeric free-usage allowance, time limit, or credit amount for the hosted service.
- OpenAPI 3 specification editor
- Schema and path creation workflow
- Parameters, request bodies, responses
- API security scheme support
- JSON and YAML editing modes
- Saved definitions list
Free Tier Value
This free tier is genuinely usable for small OpenAPI 3 work: it lets a developer create definitions, schemas, paths, operations, and security definitions, then export the JSON for Linx or Postman. There’s no paid plan shown to anchor against, so the value is estimated as a small but real standalone tool at about $2/month, held down by the support gap for only a subset of OpenAPI 3 specifications and the lack of any clearly stated premium tier or expanded limits.
What's included in the free tier
- Access to create OpenAPI 3 definitions.
- Access to create schemas, paths, operations, and API security definitions.
- Access to use the JSON definition in Linx or Postman.
- Limited to supported OpenAPI 3 specifications only; not all specifications are supported.
See OpenAPI Definition Designer pricing for current limits.
