Daily fiat + crypto exchange rates vs USD via open.er-api.com.
Free daily-updated FX reference rates. Send a base currency code (USD, EUR, JPY, THB, …) → get latest rates for 170+ currencies. Cached 1h at the edge; upstream refreshes once per 24 h so longer caching is safe.
PRICE / CALL$0.0005
LATENCY p500ms
UPTIME 30d100%
REFUND RATE0%
CALLS · 7d0
TOOLS1 exposed
AUTHx402 · key · oauth
/ TOOL
step 1 · free. The gateway returns the x402 challenge — that's what your agent receives. step 2 (after the challenge lands): sign + pay $0.0005 to see the real response. connect wallet first to be ready for step 2.
/ PARAMS
/ REQUEST
POST /mcp/fx-rates/latest
content-type: application/json
{
"base": "USD"
}
/ responseidle
// Press the button — the gateway will return a 402 challenge. Pay $0.0005 once with your wallet to see the real response.