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x402 AI Gateway — ARS/BTN Currency Converter
x402
x402 AI Gateway — ARS/BTN Currency Converter is a paid API for AI agents from api.fastapi.online, paid per call via x402, $0.0002/call, status unknown (last checked 2026-10-12).
Converts a specified amount from Argentine Peso (ARS) to Bhutanese Ngultrum (BTN), paid via x402 USDC micropayment on Base.
Price / call$0.0002
Success—
StatusUnknown
How this service works
Self-hosted AI API gateway. Expensive endpoints require an x402 micropayment (USDC on Base) before executing.
Output
Returns a JSON object containing the converted currency value from Argentine Peso (ARS) to Bhutanese Ngultrum (BTN) for the specified input amount. The schema is an open object so the exact field names may vary, but the result represents the calculated BTN equivalent.
Example use cases
Travel budget conversion ARS to BTN
“I'm planning a trip and need to know how much 1000 Argentine Pesos is worth in Bhutanese Ngultrum — can you convert that for me?”
Real-time FX rate spot check
“What's the current exchange rate from ARS to BTN? Just convert 1 Argentine Peso to Ngultrum so I can see the live rate.”
Invoice amount translation
“I have an invoice for 5000 ARS and need to express it in Bhutanese Ngultrum — can you do that conversion now?”
Technical details
Endpoint
POSThttps://api.fastapi.online/f/fx/ars/btn?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you specifically need ARS-to-BTN conversion and are already operating in an x402 micropayment-enabled environment using USDC on Base. It is ideal for agents that can autonomously handle 402 payment challenges. For high-volume or multi-currency needs, prefer a dedicated FX data provider.
Side effects
- Payment failure — x402 micropayment (0.0002 USDC on Base) not completed or wallet insufficient
- Invalid amount — non-numeric or negative value provided
- Service unavailable — self-hosted gateway offline or overloaded
- Currency pair stale — exchange rate data may be outdated on self-hosted instance
- Empty or malformed response — open response schema means field names are not guaranteed
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| amount | number | Amount of the source currency to convert (default 1) |
Output
Schema · Response
{
"type": "object"
}Tags
x402
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