{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://arr-research.github.io/schema/model-assessment.schema.json",
  "title": "ARR public frontier-model assessment",
  "type": "object",
  "additionalProperties": false,
  "required": [
    "assessment_id", "paper_id", "version", "version_id", "canonical_sha256",
    "provider", "model_id", "assessed_at", "prompt_version", "independence",
    "recommendation", "millennium_score", "overall_stars", "criteria",
    "summary", "strengths", "weaknesses", "potential_errors",
    "strong_novelty_candidates", "unresolved_material_objections",
    "source_response_sha256"
  ],
  "properties": {
    "assessment_id": {"type": "string", "pattern": "^arr:assessment:[0-9a-f-]{36}$"},
    "paper_id": {"type": "string", "pattern": "^ARR-[0-9]{4}-[0-9A-HJKMNP-TV-Z]{16}$"},
    "version": {"type": "string", "pattern": "^v[1-9][0-9]*$"},
    "version_id": {"type": "string", "pattern": "^arr:version:[0-9a-f-]{36}$"},
    "canonical_sha256": {"type": "string", "pattern": "^[0-9a-f]{64}$"},
    "provider": {"type": "string", "minLength": 2, "maxLength": 100},
    "model_id": {"type": "string", "minLength": 2, "maxLength": 160},
    "runtime_provenance": {
      "type": "object",
      "additionalProperties": false,
      "required": ["provider", "model_id", "reasoning_effort", "basis", "evidence_sha256"],
      "properties": {
        "provider": {"type": "string", "minLength": 2, "maxLength": 100},
        "model_id": {"type": "string", "minLength": 2, "maxLength": 160},
        "reasoning_effort": {"enum": ["none", "minimal", "low", "medium", "high", "xhigh", "max", "ultra"]},
        "basis": {"enum": ["platform_runtime_metadata", "author_verified_ui", "operator_verified_ui"]},
        "evidence_sha256": {"type": "string", "pattern": "^[0-9a-f]{64}$"}
      }
    },
    "assessed_at": {"type": "string", "format": "date-time"},
    "prompt_version": {"const": "ARR-ASSESS-1.0"},
    "independence": {"enum": ["not_involved_in_manuscript", "involved_in_manuscript", "unknown"]},
    "recommendation": {"enum": ["accept", "minor_revision", "major_revision", "reject"]},
    "millennium_score": {"type": "number", "minimum": 0, "maximum": 10, "multipleOf": 0.01},
    "overall_stars": {"type": "integer", "minimum": 1, "maximum": 10},
    "criteria": {
      "type": "object",
      "additionalProperties": false,
      "required": ["correctness_confidence", "rigor", "novelty", "significance", "reproducibility"],
      "properties": {
        "correctness_confidence": {"$ref": "#/$defs/criterion"},
        "rigor": {"$ref": "#/$defs/criterion"},
        "novelty": {"$ref": "#/$defs/criterion"},
        "significance": {"$ref": "#/$defs/criterion"},
        "reproducibility": {"$ref": "#/$defs/criterion"}
      }
    },
    "summary": {"type": "string", "minLength": 40, "maxLength": 1600},
    "strengths": {"$ref": "#/$defs/findings"},
    "weaknesses": {"$ref": "#/$defs/findings"},
    "potential_errors": {"$ref": "#/$defs/findings"},
    "strong_novelty_candidates": {"$ref": "#/$defs/findings"},
    "unresolved_material_objections": {"$ref": "#/$defs/findings"},
    "source_response_sha256": {"type": "string", "pattern": "^[0-9a-f]{64}$"}
  },
  "$defs": {
    "criterion": {
      "type": "object",
      "additionalProperties": false,
      "required": ["stars", "basis"],
      "properties": {
        "stars": {"type": "integer", "minimum": 1, "maximum": 5},
        "basis": {"type": "string", "minLength": 15, "maxLength": 600}
      }
    },
    "findings": {
      "type": "array",
      "maxItems": 12,
      "items": {"type": "string", "minLength": 8, "maxLength": 800}
    }
  }
}