{
  "id": "api:x402-302a0360aad2b6c7",
  "kind": "api",
  "name": "data.greeneris.io/v1/fx/history",
  "description": "European Central Bank reference exchange rates for any past date or date range (business days since 1999-01-04), via frankfurter.dev. Query: ?date=2026-05-01 for one day, or ?start=2026-05-01&end=2026-05-08 for a daily series (max 366 days), plus ?base=EUR&symbols=USD,GBP (symbols optional -> all). Series responses nest rates by date. Historical data is immutable; served with a 24h cache.",
  "category": "x402",
  "url": "https://data.greeneris.io/v1/fx/history",
  "price": null,
  "x402": true,
  "meta": {
    "network": "eip155:8453",
    "scheme": "exact",
    "pay_to": "0x6ab8efe305cce67daa48c97bde29c04402822dff",
    "method": "GET",
    "last_updated": "2026-10-28T23:01:03.957Z"
  },
  "trust": null
}