OpenAPI DevTools is a user-friendly Chrome extension that automatically generates OpenAPI specifications while you browse the web. It converts network requests into a specification, allowing you to instantly generate an OpenAPI 3.1 specification for any website or application. The extension can merge new request and response headers, bodies, and query parameters per endpoint, making it easy to view and download the specification using Redocly. Installation is simple, and once installed, the specification will populate based on JSON requests. The extension also allows for filtering hosts and parameterizing paths in URLs. If any information is missing from a request, simply trigger a request that contains the missing information. The project is open for contribution and development, with instructions provided for those interested.
https://github.com/AndrewWalsh/openapi-devtools