{
  "specification": "1.0",
  "rules": [
    {
      "code": "VS-ID-001",
      "severity": "error",
      "summary": "Document IDs must be unique."
    },
    {
      "code": "VS-REF-001",
      "severity": "error",
      "summary": "Identifier references must resolve to an object in the same document. Validators must not fetch external resources."
    },
    {
      "code": "VS-TOKEN-001",
      "severity": "error",
      "summary": "Token alias graphs must be acyclic."
    },
    {
      "code": "VS-TOKEN-002",
      "severity": "error",
      "summary": "Brace token references must name a token declared in the document."
    },
    {
      "code": "VS-TIME-001",
      "severity": "error",
      "summary": "Timed intervals must end at or after they start. Clips must fit their timeline and must not overlap on the same track."
    },
    {
      "code": "VS-GRAPH-001",
      "severity": "error",
      "summary": "Entity parts, component composition, scene instanceOf and joint parent graphs must be acyclic."
    },
    {
      "code": "VS-STATE-001",
      "severity": "error",
      "summary": "State transitions must target a declared state."
    },
    {
      "code": "VS-TOKEN-003",
      "severity": "error",
      "summary": "A token alias must target a token of the same type."
    },
    {
      "code": "VS-MOTION-001",
      "severity": "error",
      "summary": "Non-essential motion must declare a reduced-motion alternative."
    },
    {
      "code": "VS-MOTION-002",
      "severity": "error",
      "summary": "Keyframe offsets must be non-decreasing."
    },
    {
      "code": "VS-FLOW-001",
      "severity": "error",
      "summary": "A flow initial state and its transitions must name states declared on that flow."
    },
    {
      "code": "VS-PROV-001",
      "severity": "error",
      "summary": "A provenance path must be a JSON Pointer that exists in the document."
    }
  ]
}