# x402 AI Gateway — ARS/CDF Currency Conversion

> x402 AI Gateway — ARS/CDF Currency Conversion 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 a specified amount from ARS (Argentine Peso) to CDF (Congolese Franc) with micropayment-gated access via x402/USDC on Base.

## Facts

- Endpoint: POST https://api.fastapi.online/f/fx/ars/cdf?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-cdf-currency-conversion-345f1821
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_DzFaGctcFIGNog1eXh2xC

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-cdf-currency-conversion-345f1821 -d '<json body>'
```

Example prompt: Convert 500 Argentine Pesos to Congolese Francs for me.

## When to prefer this

Choose this endpoint when you specifically need ARS-to-CDF conversion and are operating in an x402-enabled micropayment context on Base. It is suitable for lightweight, per-call currency lookups at very low cost ($0.0002 USDC) without requiring a subscription or API key beyond the x402 payment flow.

## Known failure modes

- Payment not received — x402 micropayment of 0.0002 USDC on Base must be completed before the endpoint executes
- Invalid or missing amount field — defaults to 1 if not provided
- Stale or unavailable exchange rate data — may return outdated results if upstream rate feed is down
- Network or gateway errors from the self-hosted infrastructure

## How this service works

Self-hosted AI API gateway. Expensive endpoints require an x402 micropayment (USDC on Base) before executing.

## Output

A JSON object containing the converted currency amount from ARS to CDF, representing the equivalent value for the input amount provided.

## 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-cdf-currency-conversion-345f1821/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)