Hi , quick announcement: JSONSchema (https://github.com/zweidenker/JSONSchema), just got a real conformance push against the official Test-Suite (https://github.com/json-schema-org/JSON-Schema-Test-Suite) Udo ported that suite into Pharo a while back — over 1000 individual test methods — but it sat mostly unexplored until now. Claude and me went through it bucket by bucket and moved from roughly a third of the suite genuinely passing to about two-thirds: boolean schemas, oneOf/anyOf/not/pattern, dependencies, const, contains, patternProperties, if/then/else, tuple-shaped items, and a long list of format validators. For more information I’ve wrote an article: https://norbert.hartl.name/blog/2026-07-28_jsonschema-picked-back-up.html Feedback welcome, as always. Norbert