JSON Schema

Please visit the JSON Schema Landscape and discover more companies using JSON Schema.
While JSON is probably the most popular format for exchanging data, JSON Schema is the vocabulary that enables JSON data consistency, validity, and interoperability at scale.
Simplify your validation logic to reduce your code’s complexity and save time on development. Define constraints for your data structures to catch and prevent errors, inconsistencies, and invalid data.
Establish a common language for data exchange, no matter the scale or complexity of your project. Define precise validation rules for your data structures to create shared understanding and increase interoperability across different systems and platforms.
Create a clear, standardized representation of your data to improve understanding and collaboration among developers, stakeholders, and collaborators.
Adopt JSON Schema with an expansive range of community-driven tools, libraries, and frameworks across many programming languages.
Discover JSON Schema tooling to help your organization leverage the benefits of JSON Schema. Because JSON Schema is much more than a Specification, it is a vibrant ecosystem of Validators, Generators, Linters, and other JSON Schema Utilities made by this amazing Community.
With over 60 million weekly downloads, JSON Schema has a large and active developer community across the world. Join the Community to learn, share ideas, ask questions, develop JSON Schema tooling and build new connections.
Join our Slack to ask questions, get feedback on your projects, and connect with +5000 practitioners and experts.
We hold monthly Office Hours and Open Community Working Meetings. Office Hours are every first Tuesday of the month and by appointment. Open Community Working Meetings are every third Monday of the month at 12:00 PT.
JSON Schema Open Community Working Meeting
November 16th 2026, 21:00 (UTC)
JSON Schema Weekly Office Hours
November 17th 2026, 18:00 (UTC)
JSON Schema Weekly Office Hours
November 24th 2026, 18:00 (UTC)
JSON Schema Weekly Office Hours
December 1st 2026, 18:00 (UTC)
JSON Schema Weekly Office Hours
December 8th 2026, 18:00 (UTC)
JSON Schema Weekly Office Hours
December 15th 2026, 18:00 (UTC)
JSON Schema Open Community Working Meeting
December 21st 2026, 21:00 (UTC)
JSON Schema Weekly Office Hours
December 22nd 2026, 18:00 (UTC)
JSON Schema Weekly Office Hours
December 29th 2026, 18:00 (UTC)
JSON Schema Weekly Office Hours
January 5th 2027, 18:00 (UTC)
JSON Schema Weekly Office Hours
January 12th 2027, 18:00 (UTC)
JSON Schema Open Community Working Meeting
January 18th 2027, 21:00 (UTC)
JSON Schema Weekly Office Hours
January 19th 2027, 18:00 (UTC)
JSON Schema Weekly Office Hours
January 26th 2027, 18:00 (UTC)
JSON Schema Weekly Office Hours
February 2nd 2027, 18:00 (UTC)