Foreign exchange rate API
Foreign exchange rate API: official ECB reference rate for any fiat currency pair (USD/EUR, GBP/JPY — ~30 major ISO 4217 currencies) via the open-source Frankfurter API. Published once per business day around 16:00 CET — a daily reference rate for settlement and normalization, not a live trading feed. Use for currency conversion, pricing normalization, and financial reporting by agents. Cached up to 1 hour.
Answeringour last check, 2026-09-24
1 of 1checks answered this week
25 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://gateway.stride20k.com/fx/:base/:quote
| Category | Market data |
|---|---|
| Provider host | gateway.stride20k.com |
| Networks | eip155:8453 |
| Payment schemes | exact |
| Self-reported calls, 30 days | 2 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 | $0.002 | 25 ms |
Example input (from the provider)
{
"method": "GET",
"pathParams": {
"base": "USD",
"quote": "EUR"
},
"queryParams": {},
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET"
],
"type": "string"
},
"pathParams": {
"properties": {
"base": {
"description": "Base currency, ISO 4217 code (e.g. 'USD').",
"hint": "For cryptocurrency pairs use /crypto/price/:coinId (e.g. /crypto/price/bitcoin) \u2014 this route serves fiat ISO 4217 pairs only.",
"missTrack": true,
"normalize": "upper",
"pattern": "[A-Za-z]{3}",
"type": "string"
},
"quote": {
"description": "Quote currency, ISO 4217 code (e.g. 'EUR').",
"hint": "For cryptocurrency pairs use /crypto/price/:coinId (e.g. /crypto/price/bitcoin) \u2014 this route serves fiat ISO 4217 pairs only.",
"missTrack": true,
"normalize": "upper",
"pattern": "[A-Za-z]{3}",
"type": "string"
}
},
"required": [
"base",
"quote"
],
"type": "object"
},
"queryParams": {
"properties": {},
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"data": {
"properties": {
"base": {
"description": "Base currency code.",
"type": "string"
},
"date": {
"description": "ECB publication date of this rate, YYYY-MM-DD.",
"type": "string"
},
"quote": {
"description": "Quote currency code.",
"type": "string"
},
"rate": {
"description": "Units of quote currency per 1 unit of base.",
"type": "number"
}
},
"required": [
"base",
"quote",
"rate",
"date"
],
"type": "object"
},
"endpoint": {
"description": "Always \"/fx/:base/:quote\".",
"type": "string"
},
"meta": {
"properties": {
"attribution": {
"description": "Licensing attribution when the source requires it.",
"type": [
"string",
"null"
]
},
"cached": {
"description": "Whether this response was served from cache.",
"type": "boolean"
},
"fetchedAt": {
"description": "ISO 8601 time the data was actually retrieved from the upstream.",
"type": "string"
},
"source": {
"description": "Upstream source: frankfurter (ECB).",
"type": "string"
}
},
"required": [
"source",
"cached",
"fetchedAt"
],
"type": "object"
},
"ok": {
"description": "true on success.",
"type": "boolean"
}
},
"required": [
"ok",
"endpoint",
"data",
"meta"
],
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}