# x402 AI Gateway – ARS to AOA Currency Converter

> x402 AI Gateway – ARS to AOA Currency Converter is a paid API for AI agents from api.fastapi.online, paid per call via x402, $0.0002/call, status down (last checked 2026-10-13).

Converts an amount from Argentine Peso (ARS) to Nigerian Naira (AOA) using a self-hosted AI gateway, requiring a micropayment via x402/USDC on Base.

## Facts

- Endpoint: POST https://api.fastapi.online/f/fx/ars/aoa?utm_source=zero.xyz
- Price: $0.0002/call
- Payment: x402
- Status: down
- Last checked: 2026-10-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/x402-ai-gateway-ars-to-aoa-currency-converter-fb52ece5
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_XSoPzb3quwAm1x9nFwd1H

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability x402-ai-gateway-ars-to-aoa-currency-converter-fb52ece5 -d '<json body>'
```

Example prompt: Can you convert 250 Argentine Pesos to Nigerian Naira for me?

## When to prefer this

Choose this endpoint when you need a quick, low-cost ARS-to-AOA currency conversion via a micropayment-gated API and are already set up with x402/USDC on Base. Suitable for agents operating in fintech, cross-border payment, or FX-monitoring contexts where per-call pricing is acceptable and a self-hosted gateway is preferred over a centralized forex API.

## Known failure modes

- Payment failure: x402 micropayment not completed or wallet lacks sufficient USDC on Base — returns 402 Payment Required
- Invalid input: non-numeric or missing amount field — returns validation error
- Rate data unavailable: exchange rate source offline — may return empty or error response
- Network timeout: self-hosted gateway unreachable — connection error or 503

## 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 from Argentine Peso (ARS) to Angolan Kwanza (AOA), based on the input amount provided. Exact response fields may include the converted value and possibly the rate used.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "amount": {
   "type": "number",
   "description": "Amount of the source currency to convert (default 1)"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "object"
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/x402-ai-gateway-ars-to-aoa-currency-converter-fb52ece5/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.fastapi.online](https://www.zero.xyz/host/api.fastapi.online/llms.txt)