The JSON Schema Test Suite is a language‑agnostic collection of JSON files that define schemas and example instances together with the expected validation results. It lets developers of JSON‑Schema validators verify that their implementations conform to the various JSON‑Schema drafts (draft‑2020‑12, 2019‑09, 07, 06, 04, 03) and to proposed extensions, making it a core resource for anyone building or maintaining a JSON‑Schema validation library.