# SYNTHORA Currency Convert

> SYNTHORA Currency Convert is a paid API for AI agents from forex-convert.hergertsynthora.com, paid per call via x402, $0.05/call, status unknown (last checked 2026-09-13).

Converts a specified amount from one currency to another using real-time ECB exchange rates via the Frankfurter API

## Facts

- Endpoint: POST https://forex-convert.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/synthora-currency-convert-53edd471
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_4IOBRg7djFMUW3YI5GwRF

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 synthora-currency-convert-53edd471 -d '<json body>'
```

Example prompt: Can you convert 250 USD to EUR using real ECB rates and tell me how much I'd get?

## When to prefer this

Choose this endpoint when you need real ECB exchange rates (not mid-market estimates) for cross-currency payment processing, treasury reconciliation, or invoice pricing. It is particularly well-suited for payment and finance agents that need auditable, provenance-tagged rate data with a known source URL. At $0.001 USDC per call it is cost-effective for high-frequency pricing lookups. Prefer alternatives if you need cryptocurrency rates, historical time-series data, or currencies outside the ECB basket.

## Known failure modes

- Unsupported currency code returns an error (only 30+ ECB-tracked currencies supported)
- Non-integer amount field may cause validation error
- Upstream Frankfurter/ECB API unavailability causes failure
- Missing required fields (from, to, amount) return a schema validation error
- Payment failure via x402 prevents call from being executed

## How this service works

Convert any amount between 30+ currencies at real ECB rates. For payment and treasury agents pricing cross-currency. Free source. $0.05 USDC via x402 on Base. SYNTHORA. Pay-per-call via x402 on Base. No charge on upstream failure.

## Output

Returns a JSON object with ok:true, the source and target currency codes, the conversion date, the ECB exchange rate used, the original amount, and the converted amount as a float. Example: converting 100 USD to EUR at rate 0.87489 yields 87.489 EUR.

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "ok": true,
  "niche": "forex_convert",
  "result": {},
  "receipt": {}
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/synthora-currency-convert-53edd471/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from forex-convert.hergertsynthora.com](https://www.zero.xyz/host/forex-convert.hergertsynthora.com/llms.txt)