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x402.onchainexpat.com Crypto Price & Market Data
x402
x402.onchainexpat.com Crypto Price & Market Data is a paid API for AI agents from x402.onchainexpat.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-15).
Fetches current cryptocurrency price and market data including market cap, volume, and price changes for a given token
Price / call$0.01
Success—
StatusUnknown
How this service works
Pay-per-request AI, crypto, proxy, and utility APIs using x402 protocol
Output
Returns current price, market capitalization, 24-hour trading volume, and price change percentage for the requested cryptocurrency token.
Example use cases
Portfolio monitoring with real-time alerts
“Can you check the current prices and market caps for Bitcoin, Ethereum, and Solana? I want to see how my holdings are performing today, especially their 24-hour price changes.”
Investment research for token comparison
“I'm looking to diversify my crypto portfolio. What are the current trading volumes and market capitalizations for Cardano and Polygon? How do their 24-hour price movements compare?”
DeFi transaction due diligence
“Before I swap some tokens, can you look up the current price of USDC and check its market cap and 24-hour volume to make sure the liquidity is healthy right now?”
Technical details
Endpoint
POSThttps://x402.onchainexpat.com/api/x402-tools/crypto/priceWhen to prefer
Use this endpoint when you need real-time cryptocurrency price and market data (price, market cap, volume, price changes) for a specific token. Prefer it over the fiat currency conversion endpoint (/fiat) when the asset in question is a crypto token rather than a traditional currency. Also prefer this over the token metadata endpoint when you need current market metrics rather than security analysis or on-chain token details.
Side effects
- Unknown or unsupported token symbol returns an error or empty result
- Network timeout if the upstream price feed is unavailable
- Invalid input format results in a 400-level error
- Payment failure (insufficient USDC balance) blocks the request
- Rate limiting if too many requests are made in quick succession
Input
{
"symbol": "BTC"
}Schema · Request body
| Field | Type | Description |
|---|---|---|
| symbolrequired | string | Crypto ticker or name. Aliases: 'coin', 'token'. E.g. 'BTC', 'bitcoin', 'ETH', 'solana' |
| currency | string | Quote currency, default 'usd'. Alias: 'quote_currency' |
Output
{
"name": "Bitcoin",
"price": 73387,
"cached": false,
"symbol": "BTC",
"low_24h": 72515,
"currency": "USD",
"high_24h": 74214,
"market_cap": 1470384089861,
"volume_24h": 36154038387,
"last_updated": "2026-05-29T22:42:22.383Z",
"price_change_24h": -0.02132
}Schema · Response
| Field | Type | Description |
|---|---|---|
| name | string | |
| price | number | |
| cached | boolean | |
| symbol | string | |
| currency | string | |
| market_cap | number | |
| volume_24h | number | |
| change_24h_pct | number |
Tags
x402
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