JSON is a commonly used data format for exchanging messages and storing content. JSON Schema provides a data definition language to describe JSON content and enable it to be validated.

Using JSON Schema covers the creation of JSON schema definitions, along with a set of programs that show how to use it. The programs include, configuration and lightweight text files, Internet message exchange, and automated validation.

More advanced topics include use of references, using custom resource URI and storage, creating validation processes for custom validation, and robust file storage.

All programs are provided in Javascript (using Node.js) and Python, and use JSON Schema draft 4.