{
  "free_tier": "50 requests/day per IP, no key needed",
  "paid": "pay-per-call via x402 (USDC on Base mainnet). No signup, no API key — any x402 client pays automatically on the 402 response.",
  "prices_usd": {
    "/v1/preview": 0.001,
    "/v1/markdown": 0.002
  },
  "payTo": "0x06B94268543feD36dEB997f03A0251FCF4731C47",
  "network": "base",
  "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
  "discovery": "/.well-known/x402",
  "pro": {
    "price_usd": 9,
    "includes": "25,000 calls, no expiry, no subscription",
    "buy": "https://buy.stripe.com/cNi28tc3v6FRc6U8xtc3m2w",
    "auth": "X-API-Key header (or ?key=). Check a key at /v1/key/check."
  }
}