# x402 AI Gateway — ARS to BND Currency Conversion

> x402 AI Gateway — ARS to BND Currency 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 an amount from Argentine Peso (ARS) to Brunei Dollar (BND), gated by an x402 micropayment in USDC on Base.

## Facts

- Endpoint: POST https://api.fastapi.online/f/fx/ars/bnd?utm_source=zero.xyz
- Price: $0.0002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-12
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/x402-ai-gateway-ars-to-bnd-currency-conversion-11e71265
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_3NBWmGOatfa2CY27ZCT6x

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-bnd-currency-conversion-11e71265 -d '<json body>'
```

Example prompt: Convert 5000 Argentine Pesos to Brunei Dollars for me — just give me the converted amount.

## When to prefer this

Use this endpoint when you specifically need to convert Argentine Peso (ARS) to Brunei Dollar (BND) and are operating within an x402-compatible micropayment workflow on Base. Prefer this over general-purpose FX APIs if your agent stack already handles x402 payments, or if you want a pay-per-call model with no subscription overhead.

## Known failure modes

- Payment not provided or insufficient — returns HTTP 402 requiring USDC micropayment on Base before execution
- Invalid or non-numeric amount — may return a 400 or error object
- Service unavailable — self-hosted endpoint may return 503 or timeout
- Stale exchange rate data — rate may not reflect real-time market conditions

## 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 ARS to BND, based on the provided amount (defaulting to 1 if not specified).

## 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-bnd-currency-conversion-11e71265/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)