The latest Internet-Drafts at the IETF are the draft-handrews-json-schema*-00 documents, which correspond to the draft-07 meta-schemas. These were published on 2017-11-19. (Due to a change in author/editorship the I-D numbering was reset to -00 again).
Please see the release notes for more information on this release and on migrating from draft-06 or draft-04.
The specification is split into three parts, Core, Validation, and Hyper-Schema, along with a related specification, Relative JSON Pointers:
|JSON Schema Core||defines the basic foundation of JSON Schema|
|JSON Schema Validation||defines the validation keywords of JSON Schema|
|JSON Hyper-Schema (errata)||defines the hyper-media keywords of JSON Schema|
|Relative JSON Pointers||extends the JSON Pointer sytnax for relative pointers|
They are also available on the IETF main site:
- draft-handrews-json-schema-00 (core)
The meta-schemas are schemas against which other schemas can be validated. They are self-descriptive: the JSON Schema meta-schema validates itself, while the JSON Hyper-Schema meta-schema both validates itself and defines its own “self” link. The latest meta-schema is draft-07.
|Core/Validation meta-schema||Used for schemas written for pure validation.|
|Hyper meta-schema||Used for schemas written for validation and hyper-linking.|
If you are accessing the above meta-schema links from a web browser, you will need to save the file then open it as a JSON document.
Migrating from draft-04 or draft-06
The release notes discuss the changes impacting users and implementors:
Please see Specification Links for older drafts and the latest unreleased version of the specification.