{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://mathgraph.org/schemas/capability-registry-v1.schema.json",
  "title": "MathGraph capability registry v1",
  "type": "object",
  "additionalProperties": false,
  "required": [
    "schema_version",
    "id",
    "version",
    "qualified_entries",
    "experimental_candidates"
  ],
  "properties": {
    "schema_version": {
      "const": "mathgraph.capability-registry.v1"
    },
    "id": {
      "type": "string",
      "pattern": "\\S"
    },
    "version": {
      "type": "string",
      "pattern": "\\S"
    },
    "qualified_entries": {
      "type": "array",
      "items": {
        "type": "object",
        "additionalProperties": false,
        "required": [
          "id",
          "version",
          "profile",
          "contract",
          "evaluation",
          "qualification_receipt",
          "trust_policy"
        ],
        "properties": {
          "id": {
            "type": "string",
            "pattern": "\\S"
          },
          "version": {
            "type": "string",
            "pattern": "\\S"
          },
          "profile": {
            "type": "string",
            "pattern": "\\S"
          },
          "contract": {
            "$ref": "#/$defs/artifact"
          },
          "evaluation": {
            "$ref": "#/$defs/artifact"
          },
          "qualification_receipt": {
            "$ref": "#/$defs/artifact"
          },
          "trust_policy": {
            "$ref": "#/$defs/artifact"
          }
        }
      },
      "uniqueItems": true
    },
    "experimental_candidates": {
      "type": "array",
      "items": {
        "type": "object",
        "additionalProperties": false,
        "required": [
          "id",
          "version",
          "profile",
          "status",
          "description",
          "source"
        ],
        "properties": {
          "id": {
            "type": "string",
            "pattern": "\\S"
          },
          "version": {
            "type": "string",
            "pattern": "\\S"
          },
          "profile": {
            "type": "string",
            "pattern": "\\S"
          },
          "status": {
            "const": "EXPERIMENTAL"
          },
          "description": {
            "type": "string",
            "pattern": "\\S"
          },
          "source": {
            "$ref": "#/$defs/artifact"
          }
        }
      },
      "uniqueItems": true
    }
  },
  "$defs": {
    "artifact": {
      "type": "object",
      "additionalProperties": false,
      "required": [
        "id",
        "locator",
        "sha256",
        "size_bytes",
        "media_type"
      ],
      "properties": {
        "id": {
          "type": "string",
          "pattern": "\\S"
        },
        "locator": {
          "type": "string",
          "pattern": "\\S"
        },
        "sha256": {
          "type": "string",
          "pattern": "^[0-9a-f]{64}$",
          "minLength": 64,
          "maxLength": 64
        },
        "size_bytes": {
          "type": "integer",
          "minimum": 0
        },
        "media_type": {
          "type": "string",
          "pattern": "\\S"
        }
      }
    }
  },
  "description": "An empty qualified index is valid. Experimental source pointers are not admitted descriptors. Qualified rows require independent receipt/policy admission; parsing an index does not establish trust. Strict consumer rejects duplicate (id, version) across both arrays."
}