JSON Schema

JSON Schema is a vocabulary that allows you to annotate and validate JSON documents.

It's used by Google, Microsoft, Amazon, Mozilla, SAP, IBM, HM Government, NIH, and many others.

Used by webpack and eslint, with the main imeplementation weekly download of more than 20 million.

We're always looking for feedback from users and implementers, currently specifically on Vocabularies, a new concept in JSON Schema which allows for the formalised extension of JSON Schema.

More broadly, we're also looking to focus on educational resources, making sure they are consistent, up to date, and use developer friendly language, before we re-group to start work on the next draft.

JSON Schema is baked in to the worlds most popular editor, VS Code (according to the StackOverflow developer survey 2019).

JSON Schema is used as the means to specify payload data in the Open API Specification, which is the defacto API specification langauge today.

This project develops the JSON Schema specification, but does not develop any specific implementations.

This crowdfunding page is run by and for the benefit of the independent contributors to the
JSON Schema open source software project. This crowdfunding page is not endorsed or
administered by OpenJS Foundation, Inc. (the “OpenJS Foundation”), the OpenJS Foundation
does not receive and has no control over any funds contributed, the OpenJS Foundation does not
direct or otherwise supervise the actions of any contributor to the JSON Schema project, and all
donations made will be expended for the private benefit of or otherwise to reimburse individuals
that do not have an employer/employee, contractor, or other agency relationship with the OpenJS
Foundation. The JSON Schema marks used herein are used under license from the OpenJS
Foundation for the benefit of the open source software community.