JSON Schema - Specification [#section]

The current version is 2020-12! The previous version was 2019-09.
See also the release notes / change log (Work in progress).
The specification is split into two parts, Core and Validation. We also publish the Relative JSON Pointers spec although it's not currently used by Core or Validation in any significant way.
The meta-schemas are schemas against which other schemas can be validated. It is self-descriptive: the JSON Schema meta-schema validates itself.
The latest meta-schema is 2020-12. For an explanation of the change to date-based identifiers, see the Specification Links page.
If you are accessing these JSON document links from a web browser, you will need to save the file then open it as a JSON document. This is due to limitations with GitHub Pages.
Please note, additional vocabulary specific schema files are needed to fully construct and use the Core/Validation Dialect meta-schema.
These are relevant primarily to people who want to write their own meta-schemas that build on specific parts of the existing specification.
The release notes discuss the changes impacting users and implementers:
Please see Specification Links for older drafts and the latest unreleased version of the specification.
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