# Forex Latest Exchange Rates (Synthora)

> Forex Latest Exchange Rates (Synthora) is a paid API for AI agents from forex-latest.hergertsynthora.com, paid per call via x402, $0.05/call, status unknown (last checked 2026-09-13).

Returns real-time ECB reference exchange rates for any currency pair, given a base currency and one or more quote symbols

## Facts

- Endpoint: POST https://forex-latest.hergertsynthora.com/service
- Price: $0.05/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/forex-latest-exchange-rates-synthora-023247d2
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_UTrtupMOqzJq7eRMdj7va

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 forex-latest-exchange-rates-synthora-023247d2 -d '<json body>'
```

Example prompt: What's the current ECB exchange rate for USD as the base against EUR, GBP, and JPY?

## When to prefer this

Choose this endpoint when you need free, deterministic, real-time ECB reference exchange rates for major currencies without building your own forex data pipeline. It is ideal for financial calculations, invoice conversion, or multi-currency display where ECB rates are authoritative enough. Prefer this over commercial forex APIs when cost-sensitivity matters (free first 3 calls, then $0.001/call) and ECB reference rates are acceptable rather than live interbank mid-market rates.

## Known failure modes

- Unsupported currency code returns an error or empty result
- Upstream ECB data unavailable — no charge applied per policy
- Malformed symbol string causes validation error
- Rate limit or wallet exhaustion after free tier (3 calls)
- Invalid or missing base currency parameter

## How this service works

Real-time reference exchange rates for 30+ currencies from the European Central Bank. Base + quote, any pair. Free, deterministic, instant. $0.01 USDC via x402 on Base. SYNTHORA.

## Output

Returns real-time reference exchange rates from the European Central Bank for the specified base currency against one or more quote currency symbols, including the rate values and likely a timestamp or date of the rates.

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "ok": true,
  "niche": "forex_latest",
  "result": {
   "base": "EUR",
   "senal": "la mayor separacion entre la referencia oficial del BCE y el mercado esta en BRL: -0.6987% (BCE 5.910200 vs mercado 5.868903). Mide cuanto se ha movido el mercado desde la fijacion diaria del BCE.",
   "fuentes": "<2 fuentes independientes>",
   "mercado": {
    "n_monedas": 166,
    "actualizado": "Wed, 05 Aug 2026 00:02:31 +0000"
   },
   "as_of_utc": "2026-08-05T16:31:27Z",
   "confianza": "alta",
   "rates_bce": {
    "AUD": 1.6385,
    "BRL": 5.9102,
    "CAD": 1.623,
    "CHF": 0.9345,
    "CNY": 7.7989,
    "CZK": 24.195,
    "DKK": 7.4753,
    "GBP": 0.8572,
    "HKD": 9.0619,
    "HUF": 362.08,
    "IDR": 20648.04,
    "ILS": 3.4672,
    "INR": 109.9045,
    "ISK": 141.8,
    "JPY": 182.08,
    "KRW": 1644.97,
    "MXN": 19.8867,
    "MYR": 4.7291,
    "NOK": 10.9835,
    "NZD": 1.968,
    "PHP": 70.192,
    "PLN": 4.306,
    "RON": 5.2469,
    "SEK": 10.9635,
    "SGD": 1.4806,
    "THB": 38.29,
    "TRY": 54.9691,
    "USD": 1.1554,
    "ZAR": 18.8869
   },
   "latencia_s": 0.12,
   "degradacion": {
    "de": 2,
    "fallos": [],
    "fuentes_vivas": 2
   },
   "rates_mercado": {
    "AED": 4.232011,
    "AFN": 75.549134,
    "ALL": 93.329397,
    "AMD": 421.915192,
    "ANG": 2.062709,
    "AOA": 1088.376462,
    "ARS": 1724.437368,
    "AUD": 1.63793,
    "AWG": 2.062709,
    "AZN": 1.956781,
    "BAM": 1.95583,
    "BBD": 2.304703,
    "BDT": 142.576049,
    "BGN": 1.95583,
    "BHD": 0.433284,
    "BIF": 3442.510085,
    "BMD": 1.152351,
    "BND": 1.477595,
    "BOB": 14.011682,
    "BRL": 5.868903,
    "BSD": 1.152351,
    "BTN": 109.877947,
    "BWP": 16.204709,
    "BYN": 3.389592,
    "BZD": 2.304703,
    "CAD": 1.6206,
    "CDF": 2638.365672,
    "CHF": 0.93298,
    "CLF": 0.026942,
    "CLP": 1064.904486,
    "CNH": 7.778561,
    "CNY": 7.787379,
    "COP": 3723.186039,
    "CRC": 522.373003,
    "CUP": 27.656435,
    "CVE": 110.265,
    "CZK": 24.194494,
    "DJF": 204.797052,
    "DKK": 7.463753,
    "DOP": 66.955759,
    "DZD": 153.084495,
    "EGP": 57.82955,
    "ERN": 17.285272,
    "ETB": 186.172417,
    "EUR": 1,
    "FJD": 2.544716,
    "FKP": 0.857055,
    "FOK": 7.463751,
    "GBP": 0.857057,
    "GEL": 3.017354,
    "GGP": 0.857055,
    "GHS": 13.494188,
    "GIP": 0.857055,
    "GMD": 85.756404,
    "GNF": 10114.02705,
    "GTQ": 8.781522,
    "GYD": 240.99591,
    "HKD": 9.037731,
    "HNL": 30.862768,
 
… (truncated)
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/forex-latest-exchange-rates-synthora-023247d2/health.json
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