# Curade

> Prediction-market data for AI agents, sold per call over x402 v2 (USDC on Base mainnet, eip155:8453).
> No signup or API key: call an endpoint, receive HTTP 402 with a `payment-required` header, pay, retry.

API base: https://api.curade.xyz
Facilitator: https://facilitator.payai.network

## Endpoints
- GET /health — free, returns "ok".
- GET /v1/polymarket/odds — $0.005 per call. Latest Polymarket snapshot (question, Yes probability, 24h volume,
  liquidity, end date). Params: limit (default 25, max 200), q (case-insensitive question filter). Snapshot every 15 minutes.
- GET /v1/polymarket/disagreement — $0.02 per call. Markets on both Polymarket and Kalshi, matched by normalized
  question, with the absolute gap in Yes probability. Kalshi outages are reported in the body, not as errors.
- GET /v1/polymarket/package?market=<slug-or-id> — $2.00 one-time. Full snapshot history for one market plus the
  cross-venue scorecard and a license token.

## Guarantees
- Per-call endpoints settle after a successful response; the package settles first (its license names the payment).
- No snapshot available: HTTP 503 `no_snapshot`. Underivable prices are null. Data is never fabricated.
- Market prices are information, not predictions or financial advice.

## Contact
sryantrabot@gmail.com