{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://raw.githubusercontent.com/api-evangelist/accessibility-standards/refs/heads/main/json-schema/wcag-success-criterion-schema.json",
  "title": "WcagSuccessCriterion",
  "description": "A WCAG success criterion defining a testable requirement for accessible web content.",
  "type": "object",
  "properties": {
    "id": {
      "type": "string",
      "description": "The WCAG success criterion identifier, e.g. 1.1.1",
      "example": "1.1.1",
      "pattern": "^[0-9]+\\.[0-9]+\\.[0-9]+$"
    },
    "title": {
      "type": "string",
      "description": "Short name of the success criterion",
      "example": "Non-text Content"
    },
    "level": {
      "type": "string",
      "description": "Conformance level of the success criterion",
      "enum": ["A", "AA", "AAA"],
      "example": "A"
    },
    "principle": {
      "type": "string",
      "description": "The POUR principle the criterion belongs to",
      "enum": ["Perceivable", "Operable", "Understandable", "Robust"],
      "example": "Perceivable"
    },
    "guideline": {
      "type": "string",
      "description": "The guideline number the criterion belongs to",
      "example": "1.1"
    },
    "description": {
      "type": "string",
      "description": "Full text of the success criterion requirement"
    },
    "url": {
      "type": "string",
      "format": "uri",
      "description": "URL to the official WCAG success criterion documentation",
      "example": "https://www.w3.org/TR/WCAG22/#non-text-content"
    },
    "version": {
      "type": "string",
      "description": "WCAG version that introduced this criterion",
      "example": "2.0"
    },
    "understanding": {
      "type": "string",
      "format": "uri",
      "description": "URL to the understanding document for this criterion"
    },
    "techniques": {
      "type": "array",
      "description": "List of technique identifiers applicable to this criterion",
      "items": {
        "type": "string"
      },
      "example": ["G94", "H37", "C9"]
    }
  },
  "required": ["id", "title", "level", "principle"]
}