Use when you need currency exchange rates, forex conversion of an amount or a re
Use when you need currency exchange rates, forex conversion of an amount or a reference rate between two currencies. Do not use for live trading quotes, intraday or crypto rates (ECB rates update once per business day). Returns JSON with the ECB euro reference rates (free at ecb.europa.eu) for about 30 currencies, rebased to any of them as cross rates we calculate, with an optional amount conversion and the ECB date for 0.005 USDC per call. Typical response time 1500 ms (p95). Category: Data.
Answeringour last check, 2026-10-18
1 of 1checks answered this week
1261 msmedian answer time
$0.005listed price per call
$0.005price 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
POST https://x402-gateway.blackwoodstate8.workers.dev/v1/fx-rates
| Category | Market data |
|---|---|
| Provider host | x402-gateway.blackwoodstate8.workers.dev |
| Networks | eip155:8453 |
| Payment schemes | exact, upto |
| Self-reported calls, 30 days | 5 from 2 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-10-18 | valid payment request | 402 | $0.005 | 1261 ms |
Example input (from the provider)
{
"body": {
"amount": 100,
"base": "USD",
"symbols": [
"EUR",
"BRL",
"JPY",
"GBP"
]
},
"bodyType": "json",
"method": "POST",
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"properties": {
"amount": {
"description": "Amount in the base currency to convert, e.g. 100",
"exclusiveMinimum": 0,
"maximum": 1000000000000,
"type": "number"
},
"base": {
"description": "Base currency, ISO 4217 (EUR when omitted), e.g. USD",
"pattern": "^[A-Za-z]{3}$",
"type": "string"
},
"symbols": {
"description": "Currencies to return, e.g. [\"BRL\", \"JPY\"] (all ECB currencies when omitted)",
"items": {
"pattern": "^[A-Za-z]{3}$",
"type": "string"
},
"maxItems": 40,
"minItems": 1,
"type": "array"
}
},
"required": [],
"type": "object"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
},
"method": {
"enum": [
"POST"
],
"type": "string"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method",
"bodyType",
"body"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"additionalProperties": false,
"properties": {
"amount": {
"type": [
"number",
"null"
]
},
"attribution": {
"type": "string"
},
"base": {
"type": "string"
},
"converted": {
"anyOf": [
{
"additionalProperties": {
"type": "number"
},
"propertyNames": {
"type": "string"
},
"type": "object"
},
{
"type": "null"
}
]
},
"date": {
"type": "string"
},
"next": {
"additionalProperties": false,
"description": "Suggested next paid call in the same family (call it in a loop when the task continues)",
"properties": {
"method": {
"enum": [
"GET",
"POST"
],
"type": "string"
},
"sample": {
"description": "Free fixed sample of the whole family",
"type": "string"
},
"service": {
"description": "Service id of the suggested next paid call",
"type": "string"
},
"tool": {
"description": "MCP tool name of the same call",
"type": "string"
},
"url": {
"description": "Paid route of the next call",
"type": "string"
},
"useWhen": {
"description": "When the next call is the right one",
"type": "string"
}
},
"required": [
"service",
"tool",
"method",
"url",
"useWhen",
"sample"
],
"type": "object"
},
"note": {
"type": "string"
},
"rates": {
"additionalProperties": {
"type": "number"
},
"propertyNames": {
"type": "string"
},
"type": "object"
}
},
"required": [
"date",
"base",
"rates",
"amount",
"converted",
"attribution",
"note"
],
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}