{
  "$schema": "https://json-structure.org/meta/core/v0/#",
  "$id": "https://raw.githubusercontent.com/api-evangelist/accessibility-standards/refs/heads/main/json-structure/wcag-success-criterion-structure.json",
  "name": "WcagSuccessCriterion",
  "description": "A WCAG success criterion defining a testable requirement for accessible web content.",
  "type": "object",
  "properties": {
    "id": {
      "description": "The WCAG success criterion identifier, e.g. 1.1.1",
      "example": "1.1.1",
      "pattern": "^[0-9]+\\.[0-9]+\\.[0-9]+$",
      "type": "string"
    },
    "title": {
      "description": "Short name of the success criterion",
      "example": "Non-text Content",
      "type": "string"
    },
    "level": {
      "description": "Conformance level of the success criterion",
      "example": "A",
      "enum": [
        "A",
        "AA",
        "AAA"
      ],
      "type": "string"
    },
    "principle": {
      "description": "The POUR principle the criterion belongs to",
      "example": "Perceivable",
      "enum": [
        "Perceivable",
        "Operable",
        "Understandable",
        "Robust"
      ],
      "type": "string"
    },
    "guideline": {
      "description": "The guideline number the criterion belongs to",
      "example": "1.1",
      "type": "string"
    },
    "description": {
      "description": "Full text of the success criterion requirement",
      "type": "string"
    },
    "url": {
      "description": "URL to the official WCAG success criterion documentation",
      "example": "https://www.w3.org/TR/WCAG22/#non-text-content",
      "type": "uri"
    },
    "version": {
      "description": "WCAG version that introduced this criterion",
      "example": "2.0",
      "type": "string"
    },
    "understanding": {
      "description": "URL to the understanding document for this criterion",
      "type": "uri"
    },
    "techniques": {
      "description": "List of technique identifiers applicable to this criterion",
      "example": [
        "G94",
        "H37",
        "C9"
      ],
      "type": "array",
      "items": {
        "$schema": "https://json-structure.org/meta/core/v0/#",
        "type": "string"
      }
    }
  },
  "required": [
    "id",
    "title",
    "level",
    "principle"
  ]
}