{
  "tool_id": "art-657-forecast-accuracy-scorer",
  "kernel_id": "art-657-forecast-accuracy-scorer",
  "display_name": "Forecast Accuracy Scorer",
  "tool_version": "1.0.0",
  "mandate_type": "forecast_accuracy_score",
  "purpose": "Scores a batch of resolved probabilistic forecasts (a stated probability paired with the realized yes/no outcome) using two textbook proper scoring rules -- the Brier score and the logarithmic score -- plus a Brier Skill Score against a caller-supplied reference forecast. Each forecast may optionally carry an informational subject-matter category label (economic indicator, election/political, sports competition, gaming-style event, weather/climate, or other) so results can be broken out per category in the output. Those category labels are descriptive grouping only, supplied by the caller: this node makes no determination of contract eligibility, legality, or regulatory status, and cites no specific rule. Scope limit: it scores calibration of already-resolved forecasts; it does not itself resolve markets, price contracts, or assess venue compliance.",
  "control_description": "Scores a batch of resolved probabilistic forecasts (a stated probability paired with the realized yes/no outcome) using two textbook proper scoring rules -- the Brier score and the logarithmic score -- plus a Brier Skill Score against a caller-supplied reference forecast. Each forecast may optionally carry an informational subject-matter category label (economic indicator, election/political, sports competition, gaming-style event, weather/climate, or other) so results can be broken out per category in the output. Those category labels are descriptive grouping only, supplied by the caller: this node makes no determination of contract eligibility, legality, or regulatory status, and cites no specific rule. Scope limit: it scores calibration of already-resolved forecasts; it does not itself resolve markets, price contracts, or assess venue compliance.",
  "declared_inputs": [],
  "declared_outputs": [],
  "kernel_digest": "sha256:a7c7fea4d39eb6d60198c64f6962b3687998c5b72b72f5957c229074c54df8a6",
  "trust_label": "independently verified: zkVM execution proof (risc0/groth16-bn254)",
  "data_vintage": "2026-09-04",
  "last_validated": "2026-09-04",
  "conformance_fixtures_vendored": true,
  "compute_proof_ready": "ready",
  "wave": 111,
  "source_url": "https://ainumbers.co/chaingraph/art-657-forecast-accuracy-scorer.html",
  "generated_at": "2026-09-05T02:26:40.419Z"
}