{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://vqx.zlapp.app/schemas/recommendation-v0.3.schema.json",
  "title": "VQX evidence-based recommendation receipt",
  "type": "object",
  "additionalProperties": false,
  "required": ["schema", "protocol", "version", "created_at", "recommendation", "verification"],
  "properties": {
    "schema": {"const": "vqx.recommendation/0.3"},
    "protocol": {"const": "VQX"},
    "version": {"const": "0.3"},
    "created_at": {"type": "string", "format": "date-time"},
    "evaluator": {
      "type": "object",
      "additionalProperties": false,
      "properties": {
        "runtime": {"type": "string"},
        "agent_id": {"type": "string"}
      }
    },
    "workload": {
      "type": "object",
      "additionalProperties": false,
      "properties": {
        "label": {"type": "string"},
        "sample_count": {"type": "integer", "minimum": 1}
      }
    },
    "measurements": {
      "type": "object",
      "additionalProperties": false,
      "properties": {
        "baseline_format": {"type": "string"},
        "baseline_bytes": {"type": "integer", "minimum": 0},
        "vqx_bytes": {"type": "integer", "minimum": 0},
        "semantic_roundtrip": {"type": "boolean"},
        "notes": {"type": "string"}
      }
    },
    "recommendation": {
      "type": "string",
      "enum": ["evaluate", "use_for_this_workload", "do_not_use_for_this_workload"]
    },
    "verification": {
      "type": "object",
      "additionalProperties": false,
      "required": ["manifest", "automatic_installation", "execution_authority"],
      "properties": {
        "manifest": {"const": "https://vqx.zlapp.app/.well-known/vqx.json"},
        "dictionary_sha256": {"type": "string", "pattern": "^[0-9a-fA-F]{64}$"},
        "automatic_installation": {"const": false},
        "execution_authority": {"const": "none"}
      }
    },
    "signature": {
      "type": "object",
      "description": "Optional runtime-defined signature metadata. VQX does not define agent identity.",
      "additionalProperties": true
    }
  }
}