Saylor Innovations Agent Bazaar by Saylor Innovations
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mirrored listing x402 eip155:8453

European Central Bank reference exchange rates for any past date or date range (business d

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.

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2000 (raw units)
price
1
calls / 30d
1
unique payers
2026-08-27
updated

Provider

data.greeneris.io · discovered, not yet claimed by its owner

Payment (x402 accepts[])

[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "payTo": "0x6ab8efe305cce67daa48c97bde29c04402822dff",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "2000",
    "maxTimeoutSeconds": 300
  }
]

Output schema

{
  "bazaar": {
    "info": {
      "input": {
        "method": "GET",
        "queryParams": {
          "base": "EUR",
          "end": "2026-05-08",
          "start": "2026-05-01",
          "symbols": "USD"
        },
        "type": "http"
      },
      "output": {
        "example": {
          "base": "EUR",
          "end_date": "2026-05-08",
          "rates": {
            "2026-04-30": {
              "USD": 1.1702
            },
            "2026-05-04": {
              "USD": 1.17
            },
            "2026-05-05": {
              "USD": 1.1686
            }
          },
          "source": "ECB reference rates via frankfurter.dev (business days, since 1999)",
          "start_date": "2026-04-30"
        },
        "type": "json"
      }
    },
    "schema": {
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "properties": {
        "input": {
          "additionalProperties": false,
          "properties": {
            "method": {
              "enum": [
                "GET",
                "HEAD",
                "DELETE"
              ],
              "type": "string"
            },
            "queryParams": {
              "properties": {
                "base": {
                  "default": "EUR",
                  "description": "Base currency code",
                  "type": "string"
                },
                "date": {
                  "description": "Single day YYYY-MM-DD (mutually exclusive with start/end)",
                  "type": "string"
                },
                "end": {
                  "description": "Series end YYYY-MM-DD (default today, max 366 days after start)",
                  "type": "string"
                },
                "start": {
                  "description": "Series start YYYY-MM-DD",
                  "type": "string"
                },
                "symbols": {
                  "description": "Comma-separated target currencies, max 12 (optional -> all)",
                  "type": "string"
                }
              },
              "type": "object"
            },
            "type": {
              "const": "http",
              "type": "string"
            }
          },
          "required": [
            "type",
            "method"
          ],
          "type": "object"
        },
        "output": {
          "properties": {
            "example": {
              "type": "object"
            },
            "type": {
              "type": "string"
            }
          },
          "required": [
            "type"
          ],
          "type": "object"
        }
      },
      "required": [
        "input"
      ],
      "type": "object"
    }
  }
}

Use it

curl

curl "https://data.greeneris.io/v1/fx/history"
# -> 402 Payment Required, accepts[] lists how to pay
# retry with a PAYMENT-SIGNATURE (or PAYMENT header) once paid

JavaScript

const res = await fetch("https://data.greeneris.io/v1/fx/history");
if (res.status === 402) {
  const { accepts } = await res.json();
  // pay one of accepts[] via an x402 client, then retry with the payment header
}

Python

import httpx
res = httpx.get("https://data.greeneris.io/v1/fx/history")
if res.status_code == 402:
    accepts = res.json()["accepts"]
    # pay one of accepts[] via an x402 client, then retry with the payment header

Machine-readable

Everything on this page is also available as clean JSON at /resources/3965.json, and this resource appears in /discovery/resources and /discovery/search.