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x402.onchainexpat.com Crypto Price Feed
x402
x402.onchainexpat.com Crypto Price Feed is a paid API for AI agents from x402.onchainexpat.com, paid per call via x402, $0.02/call, status unknown (last checked 2026-09-15).
Returns current price, market cap, 24h volume, ATH/ATL, and multi-timeframe price changes for a given cryptocurrency token
Price / call$0.02
Success—
StatusUnknown
How this service works
Pay-per-request AI, crypto, proxy, and utility APIs using x402 protocol
Output
Returns a structured JSON object with: current price in USD (and optionally BTC/ETH), formatted price string, all-time high and low with dates and percent-from-ATH/ATL, market data (market cap, volume, supply figures, rank), price change direction and percentage for 1h/24h/7d/30d timeframes, token metadata (name, image, symbol, CoinGecko ID), and a timestamp indicating whether the result was cached.
Example use cases
Real-time portfolio performance tracking
“Check the current price and 24-hour change for Bitcoin and Ethereum so I can see how my portfolio is performing today.”
Investment decision research brief
“Show me the all-time high, all-time low, and current price for Solana along with its market cap rank and 7-day price movement.”
Market opportunity monitoring alert
“Get me the latest market cap, trading volume, and price changes across the last 30 days for Polygon so I can assess if it's a good buying opportunity right now.”
Technical details
Endpoint
POSThttps://x402.onchainexpat.com/api/x402-crypto/price-feedWhen to prefer
Use this endpoint when you need rich, multi-dimensional market data for a single cryptocurrency token in one call — including price, market cap, volume, supply, rank, ATH/ATL, and multi-timeframe changes. Prefer this over a simple price-only endpoint when downstream decisions depend on market context. It is distinct from the sibling /crypto/price endpoint and from fiat currency conversion.
Side effects
- Unknown or unsupported token symbol returns error
- Payment failure or insufficient USDC balance blocks the request
- Rate limiting if too many calls in quick succession
- Stale/cached data if the market data provider is delayed
- Malformed request body returns validation error
Input
{
"token": "BTC",
"include_history": false
}Schema · Request body
| Field | Type | Description |
|---|---|---|
| tokenrequired | string | Token symbol (ETH, BTC), name (ethereum), or contract address |
| include_history | boolean | Include 7-day price history (default: false) |
Output
{
"data": {
"ath": {
"date": "2025-10-06T18:57:42.558Z",
"price": 126080,
"change_percent": -49.35394
},
"atl": {
"date": "2013-07-06T00:00:00.000Z",
"price": 67.81,
"change_percent": 94068.16932
},
"price": {
"btc": null,
"eth": null,
"usd": 63854,
"usd_formatted": "$63,854.00"
},
"token": {
"id": "bitcoin",
"name": "Bitcoin",
"image": "https://coin-images.coingecko.com/coins/images/1/large/bitcoin.png?1696501400",
"symbol": "BTC"
},
"market": {
"market_cap": 1279990816450,
"max_supply": 21000000,
"volume_24h": 33086735306,
"total_supply": 20044290,
"market_cap_rank": 1,
"circulating_supply": 20044275,
"fully_diluted_valuation": 1279991774323
},
"changes": {
"1h": {
"percent": -0.5582732656595366,
"direction": "down"
},
"7d": {
"percent": 1.90242481210321,
"direction": "up"
},
"24h": {
"usd": -2012.9500189134124,
"percent": -3.05606,
"direction": "down"
},
"30d": {
"percent": -16.760577498136936,
"direction": "down"
}
}
},
"cached": false,
"success": true,
"timestamp": "2026-06-18T04:43:34.570118+00:00"
}Schema · Response
| Field | Type | Description |
|---|---|---|
| data | object | |
| success | boolean |
Tags
x402
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