jekyll-openapi

https://github.com/sdumetz/jekyll-openapi

A (mostly) spec-compliant OpenAPI 3.1 toolkit for Jekyll and other Liquid-based static site generators: a navigable document model (dereferencing, operations, tags, parameters) and schema-to-text renderers (TypeScript-like, XML), exposed as Liquid filters. Self-registers when listed in a Jekyll site's plugins; usable as a plain library elsewhere. HTML rendering is left to the consumer.