Schema

What is JSON Schema?

JSON Schema is a vocabulary that allows you to define the structure, required properties, and data types of JSON data. It is used for validating JSON objects to ensure they follow a specified format.

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Basic Example

{
  "$schema": "http://json-schema.org/draft-07/schema#",
  "title": "Person",
  "type": "object",
  "properties": {
    "name": {
      "type": "string"
    },
    "age": {
      "type": "integer",
      "minimum": 0
    },
    "email": {
      "type": "string",
      "format": "email"
    }
  },
  "required": ["name", "age"]
}

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Key Keywords

Keyword	Description
$schema	Specifies the JSON Schema version
type	Defines the data type (object, string, integer, array, etc.)
properties	Defines the properties of an object and their schemas
required	Lists properties that must be present
minimum / maximum	Numeric limits for number types
format	Predefined formats (e.g., email, date-time)