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klymax402 Currency Converter API
x402
klymax402 Currency Converter API is a paid API for AI agents from klymax402.com, paid per call via x402, $0.003/call, status unknown (last checked 2026-09-15).
Converts a specified amount from one currency to another, supporting fiat and crypto currencies, returning the converted amount and exchange rate.
Price / call$0.003
Success—
StatusUnknown
How this service works
One MCP endpoint gives your AI agent access to 100 APIs -- crypto, DeFi, web, AI, finance and utilities. No API keys, USDC on Base from $0.003/call.
Output
A JSON object containing the source currency, target currency, the original amount, the converted amount, the exchange rate used, the data source, and a timestamp indicating when the rate was fetched.
Example use cases
Travel budget planning in foreign currency
“I'm heading to Japan next month — how much would 2000 US dollars be in Japanese yen right now?”
Crypto portfolio value in fiat
“What's 1.5 Bitcoin worth in USD at today's rate?”
Cross-currency invoice calculation
“I need to bill a client in GBP — how much is 3500 euros in British pounds right now?”
Technical details
Endpoint
GEThttps://klymax402.com/api/currency-converter/api/convertWhen to prefer
Use this endpoint when you need a quick, low-cost fiat-to-fiat or fiat-to-crypto currency conversion with a single API call and no API key setup required. Ideal for AI agents that need on-demand exchange rates within a broader workflow, especially when paying per call via USDC on Base is preferable to maintaining a subscription.
Side effects
- Unsupported or invalid currency code returns an error
- Amount field missing or non-numeric causes a bad request error
- Rate data temporarily unavailable for exotic currency pairs
- Network timeout from upstream rate provider
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| to | string | Target currency code (e.g., EUR, GBP, USD, BTC) |
| from | string | Source currency code (e.g., USD, EUR, BTC, ETH) |
| amount | number | Amount to convert |
Output
Schema · Response
{
"type": "json",
"example": {
"to": "example",
"from": "example",
"rate": 1,
"amount": 1,
"source": "example",
"timestamp": "example",
"convertedAmount": 1
}
}Tags
x402
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