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x402 AI Gateway — Currency Amount Conversion
x402
x402 AI Gateway — Currency Amount Conversion 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 of one currency to another via a micropayment-gated AI gateway endpoint.
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 or exchange result for the specified amount, computed via the self-hosted AI gateway after a $0.0002 USDC micropayment on Base is settled.
Example use cases
Travel budget currency planning
“I'm traveling to Iraq and want to know how much 200 USD is worth in Iraqi Dinar — can you run that conversion for me?”
Invoice currency normalization
“I need to convert 5000 IQD to USD for an invoice I'm generating — can you compute that amount?”
Automated FX rate check
“My agent needs to check the current conversion value of 1 IQD in USD every hour — can you set that up using the x402 gateway?”
Technical details
Endpoint
POSThttps://api.fastapi.online/f/fx/ang/iqd?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a lightweight, pay-per-call currency conversion with no subscription overhead, and you are already operating within the x402/USDC micropayment ecosystem on Base. Ideal for agents making occasional or automated FX lookups where per-call cost predictability ($0.0002 USDC) matters more than high-volume rate discounts.
Side effects
- 402 Payment Required — micropayment not provided or insufficient USDC balance
- Invalid or missing amount field — defaults to 1 if omitted but may return unexpected results
- Unsupported currency pair — endpoint may not support all forex combinations
- Gateway timeout — self-hosted infrastructure may be unavailable
- Malformed response — schema is loosely typed, output structure may vary
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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