fx-rates.hergertsynthora.com

https://fx-rates.hergertsynthora.com

● healthy general

Foreign-exchange reference rates for 30+ currencies (ECB via Frankfurter). Deterministic, keyless. First 3 calls FREE per wallet — send header X-WALLET: 0x<addr>. No charge on upstream failure.

How to call

cURL · x402-fetch / x402-axios will auto-handle 402

curl -X POST https://fx-rates.hergertsynthora.com

/.well-known/x402.json

https://fx-rates.hergertsynthora.com/.well-known/x402