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x402 AI Gateway – ARS Currency Converter
x402
x402 AI Gateway – ARS 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 2026-10-13).
Converts a specified amount of a source currency to Argentine Peso (ARS) using a self-hosted AI gateway with x402 micropayment authorization.
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 ARS value for the specified input amount, computed via the self-hosted AI gateway after a $0.0002 USDC x402 micropayment is processed.
Example use cases
Travel budget in Argentine Pesos
“I'm heading to Buenos Aires and want to know how much 500 USD converts to in Argentine Pesos right now.”
Invoice amount in ARS
“My client invoice is for 1200 euros — can you tell me what that is in ARS so I can include the local equivalent?”
Small micropayment FX check
“What's 1 USDC worth in Argentine Pesos? I want to know the ARS value before I make a payment.”
Technical details
Endpoint
POSThttps://api.fastapi.online/f/fx/ars/bzd?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a lightweight, pay-per-call ARS currency conversion via the x402 micropayment protocol on Base/USDC, especially in agentic workflows where you want to avoid subscription APIs and prefer fractional per-call billing.
Side effects
- Payment not authorized or insufficient USDC balance — x402 payment required before execution
- Invalid or missing amount field — defaults to 1 if omitted but may return an error for non-numeric values
- Exchange rate data unavailable — gateway may return an empty or error object if FX feed is down
- Network timeout on self-hosted endpoint — no SLA guarantees on availability
- Unsupported source currency — endpoint may not support all currency pairs
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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