# Steward ECB Euro Reference Rates

> Steward ECB Euro Reference Rates is a paid API for AI agents from pay.brianbooms.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-11-02).

Fetches the European Central Bank's official euro foreign exchange reference rates for the latest day or any date within the last 90 days

## Facts

- Endpoint: GET https://pay.brianbooms.com/api/v1/data/ecb?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-11-02
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/steward-ecb-euro-reference-rates-b584b419
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_bqDJn8hyWgy_AVbFSFrua

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 steward-ecb-euro-reference-rates-b584b419
```

Example prompt: What's the official ECB euro reference rate for USD today? And while you're at it, also grab the rate for JPY.

## When to prefer this

Choose this endpoint when you need the authoritative ECB official euro reference rate — the primary publication from the source — rather than derived or aggregated FX data from providers like Frankfurter, Fixer, or OXR. Ideal when regulatory compliance, invoicing, or official financial reporting requires citing the ECB source directly. Best for EUR-base lookups; if you need a non-EUR base currency, use the complementary Frankfurter-based FX endpoint instead.

## Known failure modes

- Date outside 90-day window returns an error or empty result
- Invalid or unsupported currency code returns no rate for that pair
- ECB feed temporarily unavailable causes upstream fetch failure
- Date falls on a weekend or ECB holiday when no rates are published

## How this service works

Use when an agent needs the ECB's official euro reference rates straight from the source file — EUR base, latest day or any date in the last 90 days, one currency or the full table. Complements the Frankfurter-based FX endpoints with the primary publication. Use permitted: build it into your products and services, paid or free. Raw redistribution of the feed itself is prohibited.

## Output

Returns ECB official euro reference rates: either a single currency rate (e.g. EUR/USD = 1.0823) or the full table of all published rates, for the requested date or latest available publication, along with the reference date of the data.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "properties": {
  "date": {
   "type": "string",
   "description": "Optional YYYY-MM-DD within the last 90 days; omit for the latest. Example: 2026-09-27"
  },
  "currency": {
   "type": "string",
   "description": "Optional 3-letter code to return just one rate. Example: USD"
  }
 },
 "additionalProperties": true
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/steward-ecb-euro-reference-rates-b584b419/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from pay.brianbooms.com](https://www.zero.xyz/host/pay.brianbooms.com/llms.txt)