Download XML ValidatorBuddy now as your JSON validator:
The JSON Schema standard is used to describe any data format for JSON in a similar way XML Schema is used for XML. At the same time JSON Schema provides a human- and machine-readable documentation for JSON content. The standard supports complete structural validation as well as data type checking. JSON Schema is also often used to validate client-submitted data especially for JSON based web services. Use JSON Schema to create documentations for web APIs and check response data using a validator engine.
Together with the mature validator and batch functionalities of XML ValidatorBuddy, JSON Schema is an important technology for automated testing of JSON.
See also the guide at How to validate JSON