json-metaschema

A repository of JSON Schema meta-schemas – the schemas that describe JSON Schema documents themselves. This package provides pre-built JSON Schema drafts (e.g., draft-04, draft-07, 2019-09, 2020-12) as reusable modules. Current stable version is 1.3.0, released on a monthly cadence. Key differentiator: it is the canonical source for meta-schemas, maintained by the JSON Schema specification authors, and includes official drafts and hyper-schemas.