European Central Bank reference exchange rates for any past date or date range (
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.
Answeringour last check, 2026-09-24
1 of 1checks answered this week
889 msmedian answer time
$0.002listed price per call
$0.002price it asked us
Paid test badge: not yet. The checks above are free: we call the tool without paying and read the payment request it sends back. The Verified badge needs paid calls whose answers match the promised output, and nobody can buy a badge.
Endpoint
GET https://data.greeneris.io/v1/fx/history
| Category | Market data |
|---|---|
| Provider host | data.greeneris.io |
| Networks | eip155:8453 |
| Payment schemes | exact |
| Self-reported calls, 30 days | 1 from 1 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-09-24 | valid payment request | 402 | $0.002 | 889 ms |
Example input (from the provider)
{
"method": "GET",
"queryParams": {
"base": "EUR",
"end": "2026-05-08",
"start": "2026-05-01",
"symbols": "USD"
},
"type": "http"
}
Promised output schema (from the provider)
{
"$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"
}