# Currency Converter (Fiat & Crypto)

> Currency Converter (Fiat & Crypto) is a paid API for AI agents from currency-converter.api.klymax402.com, paid per call via x402, $0.003/call, status unknown (last checked 2026-09-14).

Converts a specified amount from one currency to another, supporting both fiat currencies and cryptocurrencies

## Facts

- Endpoint: GET https://currency-converter.api.klymax402.com/api/convert
- Price: $0.003/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 1
- Tags: x402
- Canonical page: https://www.zero.xyz/c/currency-converter-fiat-crypto-0c38ac97
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Ct7AOWIq1-o8_IT4B9E2Z

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 currency-converter-fiat-crypto-0c38ac97
```

Example prompt: How much is 250 USD in EUR right now? Also, what would 1 BTC be worth in GBP?

## When to prefer this

Use this endpoint when you need to convert a specific monetary amount between fiat currencies (USD, EUR, GBP, JPY, etc.) or between fiat and cryptocurrencies (BTC, ETH, etc.), or crypto-to-crypto. Prefer this over static lookup tables when real-time or near-real-time exchange rates are required.

## Known failure modes

- Unsupported currency code returns an error or empty result
- Missing required parameters (from, to, or amount) cause a 400 bad request
- Invalid amount (negative or non-numeric) may cause a validation error
- Stale or unavailable exchange rate data may cause inaccurate results
- Rate limit exceeded or payment failure returns 402 or 429

## How this service works

Convert between fiat currencies and cryptocurrencies

## Output

The agent receives the converted currency amount based on the current exchange rate between the specified source and target currencies, covering both fiat-to-fiat, fiat-to-crypto, and crypto-to-fiat conversions.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "to": {
   "type": "string",
   "description": "Target currency code (e.g., EUR, GBP, USD, BTC)"
  },
  "from": {
   "type": "string",
   "description": "Source currency code (e.g., USD, EUR, BTC, ETH)"
  },
  "amount": {
   "type": "number",
   "description": "Amount to convert"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/currency-converter-fiat-crypto-0c38ac97/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from currency-converter.api.klymax402.com](https://www.zero.xyz/host/currency-converter.api.klymax402.com/llms.txt)