Specification Links

You can find the latest released draft on the Specification page. The complex numbering and naming system for drafts and meta-schemas is fully explained here as well.

Table of Contents

Understanding draft names and numbers

IETF Internet-Drafts (I-Ds) are named with the editor's name and a sequential number which resets with each new editor. Meta-schemas were more-or-less numbered sequentially up through Draft 7, but the increasingly confusing mismatch between "draft-nn" versions on the meta-schemas and the IETF documents has made that unsustainable. The practice of fixing meta-schema bugs in place to preserve the sequential numbering has also been controversial.

Starting with what had been called "Draft 8" while it was being written, meta-schemas are identified by the year and month of publication. This allows for bug fixes to be published with new URIs (as long as it is not more than once a month).

Table of All Versions of Everything

For links to the somewhat more readably formatted versions on this web site, and for links to the various meta-schemas and other supplemental documents, see the the following sections.

Published Drafts

2020-12

• Specifications
  • Core: draft-bhutton-json-schema-01 (changes)
  • Validation: draft-bhutton-json-schema-validation-01 (changes)
  • Relative JSON Pointer: draft-bhutton-relative-json-pointer-00 (changes)
  • Published: 16-June-2022
• General use meta-schemas
  • JSON Schema meta-schema
  • JSON Hyper-Schema meta-schema (2019-09 Hyper-Schema with 2020-12 Validation)
  • JSON Hyper-Schema Link Description Object meta-schema
• Individual vocabulary meta-schemas
  • Core Vocabulary meta-schema
  • Applicator Vocabulary meta-schema
  • Validation Vocabulary meta-schema
  • Unevaluated Vocabulary meta-schema
  • Format Annotation Vocabulary meta-schema
  • Format Assertion Vocabulary meta-schema
  • Content Vocabulary meta-schema
  • Meta-Data Vocabulary meta-schema
• Output schemas
  • JSON Schema recommended output schema
• Output examples
  • JSON Schema verbose output example

Obsolete Draft 2020-12 Documents

These were updated without changing functionality or meta-schemas due to a few errors and unclear sections.

• Core: draft-bhutton-json-schema-00 (changes)
• Validation: draft-bhutton-json-schema-validation-00 (changes)

Draft 2019-09 (formerly known as Draft 8)

NOTE: All meta-schema URIs now use https://. While currently also available over plain HTTP due to the limitations of GitHub pages and the need to keep prior drafts available over HTTP, only the HTTPS URIs should be used.

• Specifications
  • Core: draft-handrews-json-schema-02 (changes)
  • Validation: draft-handrews-json-schema-validation-02 (changes)
  • Hyper-Schema: draft-handrews-json-schema-hyperschema-02 (changes)
  • Relative JSON Pointer: draft-handrews-relative-json-pointer-02 (changes)
  • Published: 17-September-2019
• General use meta-schemas
  • JSON Schema meta-schema
  • JSON Hyper-Schema meta-schema
  • JSON Hyper-Schema Link Description Object meta-schema
• Individual vocabulary meta-schemas
  • Core Vocabulary meta-schema
  • Applicator Vocabulary meta-schema
  • Validation Vocabulary meta-schema
  • Format Vocabulary meta-schema
  • Content Vocabulary meta-schema
  • Meta-Data Vocabulary meta-schema
  • Hyper-Schema Vocabulary meta-schema
• Output schemas
  • JSON Schema recommended output schema
  • JSON Hyper-Schema recommended output schema
• Output examples
  • JSON Schema verbose output example

Draft 7

• Core: draft-handrews-json-schema-01 (changes)
• Validation: draft-handrews-json-schema-validation-01 (changes)
• Hyper-Schema: draft-handrews-json-schema-hyperschema-01 (changes)
• JSON Schema meta-schema
• JSON Hyper-Schema meta-schema
• JSON Hyper-Schema Link Description Object meta-schema
• JSON Hyper-Schema recommended output schema
• Relative JSON Pointer: draft-handrews-relative-json-pointer-01 (changes)
• Published: 19-March-2018

Obsolete Draft 7 Documents

These were updated without changing functionality or meta-schemas due to a few errors and unclear sections.

• Core: draft-handrews-json-schema-00 (changes)
• Validation: draft-handrews-json-schema-validation-00 (changes)
• Hyper-Schema: draft-handrews-json-schema-hyperschema-00 (changes)
• Relative JSON Pointer: draft-handrews-relative-json-pointer-00 (changes)

Draft 6

• Core: draft-wright-json-schema-01 (changes)
• Validation: draft-wright-json-schema-validation-01 (changes) (schema migration FAQ)
• Hyper-Schema: draft-wright-json-schema-hyperschema-01 (changes) (hyper-schema migration FAQ)
• JSON Schema meta-schema
• JSON Hyper-Schema meta-schema
• Published: 21-April-2017

Draft 5

• Core: draft-wright-json-schema-00 (changes)
• Validation: draft-wright-json-schema-validation-00 (changes)
• Hyper-Schema: draft-wright-json-schema-hyperschema-00 (changes)
• Draft 5 was primarily a cleanup of Draft 4 and continued to use the Draft 4 meta-schemas.
• Published: 13-October-2016

Draft 4

• Core: draft-zyp-json-schema-04 (changes)
• Validation: draft-fge-json-schema-validation-00 (changes)
• Hyper-Schema: draft-luff-json-hyper-schema-00 (changes)
• JSON Reference: draft-pbryan-zyp-json-ref-03 (changes)
• JSON Schema meta-schema
• JSON Hyper-Schema meta-schema
• Published: 31-January-2013

Draft 3

• Complete Specification: draft-zyp-json-schema-03 (changes)
  • JSON Schema meta-schema
  • JSON Hyper-Schema meta-schema
  • Published: 22-November-2010

Draft 2

• Complete Specification: draft-zyp-json-schema-02 (changes: Appendix-A)
  • JSON Schema meta-schema
  • JSON Hyper-Schema meta-schema
  • Published: 23-March-2010

Draft 1

• Complete Specification: draft-zyp-json-schema-01 (changes)
  • JSON Schema meta-schema
  • JSON Hyper-Schema meta-schema
  • Published: 05-December-2009

Draft 0

Note that Draft 0 erroneously claimed to update another RFC, and was replaced the same day by Draft 1. It is included here for completeness only.

• Specification: draft-zyp-json-schema-00 (changes: Appendix-A))
  • JSON Schema meta-schema
  • JSON Hyper-Schema meta-schema
  • Published: 05-December-2009

Latest Snapshot (work in progress)

The next unreleased draft is a work in progress. You can give feedback and get involved on GitHub.

The specification links here link to the raw sources. We do not provide rendered work-in-progress drafts except near the very end of a publication cycle, during the final review period.

• Core: jsonschema-core.md
• Validation: jsonschema-validation.md
• Hyper-Schema: jsonschema-hyperschema.xml
  • Relative JSON Pointer: relative-json-pointer.xml
  • JSON Schema meta-schema
  • JSON Hyper-Schema meta-schema
  • JSON Hyper-Schema Link Description Object meta-schema
  • JSON Schema Vocabulary meta-schemas
  • JSON Schema Output schemas and examples