{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://git.transaction.science/Transaction-Science/open-standards/src/branch/main/wai/registry/capabilities.schema.json",
  "title": "WAI capability registry",
  "description": "Every string SPEC §5 registers, generated by `wai registry export` from the reference implementation's registry (wai-rs/src/codecs/registry.rs). REGISTRY.md states the policy.",
  "type": "object",
  "additionalProperties": false,
  "required": [
    "schema",
    "capabilities",
    "identifiers",
    "unregistered_labels"
  ],
  "properties": {
    "schema": {
      "type": "string"
    },
    "capabilities": {
      "type": "array",
      "items": {
        "type": "object",
        "additionalProperties": false,
        "required": [
          "capability",
          "kind",
          "status",
          "media",
          "role",
          "tier",
          "licence",
          "replicate",
          "sets",
          "spec_section",
          "edition",
          "registered"
        ],
        "properties": {
          "capability": {
            "type": "string",
            "pattern": "^wai(\\.[a-z0-9_]+)+$"
          },
          "kind": {
            "enum": [
              "payload",
              "companion",
              "refinement",
              "derivation",
              "record"
            ]
          },
          "status": {
            "enum": [
              "registered",
              "candidate"
            ]
          },
          "media": {
            "enum": [
              "image",
              "audio",
              "video",
              "text",
              "volumetric",
              "haptic",
              "metadata",
              "interactive",
              "binary",
              null
            ]
          },
          "role": {
            "enum": [
              "standalone",
              "companion",
              "enhancement",
              "refinement",
              null
            ]
          },
          "tier": {
            "enum": [
              "lossless",
              "lossy",
              "perceptual",
              null
            ]
          },
          "licence": {
            "enum": [
              "royalty-free",
              "patent-pool",
              "proprietary",
              "non-commercial",
              null
            ]
          },
          "replicate": {
            "enum": [
              "standard-defined",
              "standard-tolerance",
              "standard-unclassified",
              "neural-int-exact",
              "neural-entropy-exact",
              "generative-exact",
              "neural-float",
              "behavioral",
              null
            ]
          },
          "sets": {
            "type": "array",
            "uniqueItems": true,
            "items": {
              "enum": [
                "floor",
                "recommended"
              ]
            }
          },
          "spec_section": {
            "type": "string"
          },
          "edition": {
            "type": [
              "string",
              "null"
            ],
            "description": "The edition the registration names; null means the edition of the named standard current on the date in `registered` (SPEC §8)."
          },
          "registered": {
            "type": "string",
            "pattern": "^[0-9]{4}-[0-9]{2}-[0-9]{2}$",
            "description": "The date of the first commit of this repository that registers the string; the specification entered the repository on 2026-06-12."
          }
        }
      }
    },
    "identifiers": {
      "type": "array",
      "items": {
        "type": "object",
        "additionalProperties": false,
        "required": [
          "identifier",
          "spec_section",
          "meaning"
        ],
        "properties": {
          "identifier": {
            "type": "string",
            "pattern": "^wai(\\.[a-z0-9_]+)+$"
          },
          "spec_section": {
            "type": "string"
          },
          "meaning": {
            "type": "string"
          }
        }
      }
    },
    "unregistered_labels": {
      "type": "array",
      "items": {
        "type": "object",
        "additionalProperties": false,
        "required": [
          "label",
          "reason"
        ],
        "properties": {
          "label": {
            "type": "string",
            "pattern": "^wai(\\.[a-z0-9_]+)+$"
          },
          "reason": {
            "type": "string"
          }
        }
      }
    }
  }
}