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AsterPay Crypto Price API
x402
AsterPay Crypto Price API is a paid API for AI agents from x402.asterpay.io, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-13).
Returns real-time cryptocurrency price data including USD/EUR price, 24h change, market cap, and volume for a given token symbol
Price / call$0.005
Success—
StatusUnknown
How this service works
Get real-time cryptocurrency price data for any token
Output
A JSON object containing the token symbol, current price in USD and EUR, timestamp, 24-hour percentage change, total market cap, and 24-hour trading volume.
Example use cases
Live crypto portfolio valuation
“What are the current USD prices for Bitcoin, Ethereum, and Solana? I need them to calculate my portfolio value.”
Trading signal monitoring
“What's Bitcoin's price right now and how much has it moved in the last 24 hours? I'm watching for a 5% swing.”
Crypto market research briefing
“Give me the current price, market cap, and 24-hour trading volume for Ethereum so I can include it in my market report.”
Technical details
Endpoint
GEThttps://x402.asterpay.io/v1/market/price/bitcoinWhen to prefer
Choose this endpoint when you need real-time cryptocurrency price data including both USD and EUR pricing, 24h change, market cap, and volume in a single call. It is pay-per-use via x402 (no API key subscription needed), making it ideal for agents that need on-demand price lookups without managing credentials. Prefer it over free tier APIs when fresh, timestamped, multi-currency data is required.
Side effects
- Missing or invalid 'symbol' query parameter returns an error
- Unknown or unsupported token symbol may return a 404 or empty result
- Payment failure (insufficient USDC balance) blocks access via x402 protocol
- Rate limiting if too many requests are sent in a short window
- Stale data if upstream price feed is temporarily unavailable
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"schema": {
"type": "object",
"required": [
"symbol",
"price_usd"
],
"properties": {
"symbol": {
"type": "string"
},
"price_eur": {
"type": "number"
},
"price_usd": {
"type": "number"
},
"timestamp": {
"type": "string",
"format": "date-time"
},
"change_24h": {
"type": "number"
},
"market_cap": {
"type": "number"
},
"volume_24h": {
"type": "number"
}
}
},
"example": {
"symbol": "bitcoin",
"price_eur": 91200.15,
"price_usd": 98450.23,
"timestamp": "2026-02-01T12:00:00Z",
"change_24h": 2.45,
"market_cap": 1940000000000,
"volume_24h": 45000000000
}
}Tags
x402
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