# Foreign-Exchange Reference Rates (ECB) – 30+ Currencies

> Foreign-Exchange Reference Rates (ECB) – 30+ Currencies is a paid API for AI agents from twin.unykorn.org, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-30).

Returns ECB foreign-exchange reference rates for 30+ currencies, optionally filtered by base currency and target symbols.

## Facts

- Endpoint: POST https://twin.unykorn.org/records/fx-rates?utm_source=zero.xyz
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-30
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/foreign-exchange-reference-rates-ecb-30-currencies-02411ab5
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_urhZCntV6zHPMP-KYzujl

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability foreign-exchange-reference-rates-ecb-30-currencies-02411ab5 -d '<json body>'
```

Example prompt: What are the current ECB reference rates for EUR, GBP, JPY, and CHF, using USD as the base currency?

## When to prefer this

Prefer this endpoint when you need official ECB reference rates rather than market bid/ask prices, when you need rates for a large basket of currencies in a single call, or when regulatory/compliance contexts require ECB-sourced FX data. Choose this over ticker-based crypto FX endpoints when working with fiat currencies only.

## Known failure modes

- Invalid currency code in symbols list returns an error or omits the unknown symbol
- Unsupported base currency may return an error or default to USD
- ECB data unavailable during weekends/holidays may return stale or missing rates
- Malformed params object may result in a 400 error
- Network or upstream ECB feed outage may cause a 5xx response

## How this service works

Foreign-exchange reference rates (ECB) for 30+ currencies — Genesis402 / UnyKorn Operator Network

## Output

Returns a set of ECB official reference exchange rates keyed by currency code. Each rate represents how many units of the target currency equal one unit of the base currency. The response covers 30+ currencies sourced from the European Central Bank's published daily reference rates.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "params": {
   "type": "object",
   "properties": {
    "base": {
     "type": "string",
     "description": "optional, default USD"
    },
    "symbols": {
     "type": "string",
     "description": "optional comma list, e.g. EUR,GBP,JPY"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/foreign-exchange-reference-rates-ecb-30-currencies-02411ab5/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from twin.unykorn.org](https://www.zero.xyz/host/twin.unykorn.org/llms.txt)