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x402engine Crypto Price API
x402
x402engine Crypto Price API is a paid API for AI agents from x402engine.app, paid per call via x402, $0.001000/call, status unknown (last checked 2026-09-13).
Returns the real-time price of any cryptocurrency in any specified fiat currency
Price / call$0.001000
Success—
StatusUnknown
How this service works
Real-time cryptocurrency prices for any coin in any fiat currency
Output
Returns the current real-time price of the requested cryptocurrency denominated in the specified fiat currency, including the coin identifier and exchange rate value.
Example use cases
Portfolio valuation across multiple currencies
“I need to check my crypto holdings right now—give me Bitcoin in USD, Ethereum in EUR, and Cardano in GBP so I can see my total portfolio value across my accounts.”
International remittance cost calculation
“My friend wants to send me Ripple tokens but I need to know what XRP is worth in Indian rupees before I accept. Can you grab that price for me?”
Real-time trading decision support
“I'm thinking about rebalancing my investments today. Pull the current prices for Polygon in USD, Chainlink in CAD, and Polygon in JPY so I can compare the rates and figure out my best move.”
Technical details
Endpoint
GEThttps://x402engine.app/api/crypto/priceWhen to prefer
Use this endpoint when an AI agent needs real-time spot prices for any cryptocurrency in any fiat denomination, especially in automated workflows requiring live market data. Prefer this over cached or delayed price sources when freshness matters. Well-suited for agents handling financial calculations, portfolio tracking, or conversion queries across a broad range of coins and currencies.
Side effects
- Unsupported or unrecognized cryptocurrency symbol returns an error
- Unsupported fiat currency code returns an error
- Network or upstream data feed issues may cause temporary unavailability
- Missing required query parameters returns a 400 bad request
- Rate limiting or payment failure returns a 402 payment required
Input
{
"ids": "bitcoin,ethereum",
"vs_currencies": "usd,eur"
}Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object |
Output
{
"bitcoin": {
"usd": 63342,
"usd_24h_change": 1.8833584703432864
},
"ethereum": {
"usd": 1664.11,
"usd_24h_change": 1.244322316265071
}
}Tags
x402
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