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x402 AI Gateway — Currency Converter (FX/ANG/IDR)
x402
x402 AI Gateway — Currency Converter (FX/ANG/IDR) 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 a source currency (likely ANG or IDR-related FX pair) using a self-hosted AI gateway that requires a micropayment before execution.
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 amount and likely the applicable exchange rate for the ANG/IDR pair. The exact response schema is unspecified beyond a generic object, so the agent should parse the result for numeric conversion values.
Example use cases
Travel budget currency conversion
“How much is 500 ANG worth in IDR right now? Use the currency converter that charges a small USDC fee per lookup.”
FX rate check for remittance app
“I need to convert 1000 units of the source currency to IDR — can you call the pay-per-use FX conversion API and give me the result?”
Automated FX spot-rate enrichment
“Fetch the current ANG to IDR conversion rate for an amount of 1 unit so I can update my pricing table — use the micropayment-gated FX endpoint.”
Technical details
Endpoint
POSThttps://api.fastapi.online/f/fx/ang/idr?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a pay-per-call, self-hosted currency conversion for the ANG/IDR FX pair and are already operating within an x402 micropayment workflow on Base (USDC). Prefer this over free FX APIs when you need per-call billing, want to avoid subscription keys, or are building an agent that autonomously pays for data access via USDC on Base.
Side effects
- Payment not completed or x402 micropayment rejected — endpoint returns 402 Payment Required
- Invalid or missing 'amount' field — returns validation error
- Unsupported currency pair — returns error or empty result
- Network timeout on self-hosted instance — no response or connection error
- Rate limit or server overload on self-hosted infrastructure — 5xx error
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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