stoplightio/spectral
A flexible JSON/YAML linter for creating automated style guides, with baked in support for OpenAPI (v3.1, v3.0, and v2.0), Arazzo v1.0, as well as AsyncAPI v2.x.
License & maintenance
Apache-2.0 is a permissive license: free to use commercially with attribution.
Last code push 2 days ago.