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Crypto Spot USD Price Feed
x402
Crypto Spot USD Price Feed is a paid API for AI agents from kr-x402-mvp.kgy5612.workers.dev, paid per call via x402, $0.003/call, status unknown (last checked 2026-10-31).
Returns aggregated spot USD prices for major cryptocurrencies, computed as a median across up to five exchanges (Coinbase, Kraken, Bybit, Binance, CoinGecko), with source count, dispersion, 24h change, and volume.
Price / call$0.003
Success—
StatusUnknown
How this service works
Pay-per-call crypto microdata for trading/onchain AI agents via x402 (USDC on Base): Base gas, token risk, balances, multi-venue prices, Hyperliquid book/funding, kimchi premium. No API keys.
Output
A JSON object with a 'prices' map keyed by symbol, each containing the median USD price, individual exchange prices (Coinbase, Binance, etc.), 24h percent change, and volume. Also includes a list of data sources used and the 'updated_at' timestamp. Quality metadata like n_sources and dispersion_bps indicate how many exchanges responded and how spread the quotes are.
Example use cases
Trading bot price check
“Get me the latest median USD prices for BTC, ETH, and SOL from multiple exchanges, including how much they've moved in the last 24 hours.”
Portfolio valuation snapshot
“I need current USD prices for BTC, ETH, BNB, ADA, and AVAX so I can value my crypto portfolio right now — pull from as many sources as possible.”
Cross-exchange arbitrage monitoring
“What's the current price dispersion in basis points for XRP and DOGE across exchanges? I want to know if there's a gap worth trading.”
Technical details
Endpoint
GEThttps://kr-x402-mvp.kgy5612.workers.dev/api/usd-price?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a robust, multi-source median price rather than trusting a single exchange feed. Ideal for trading agents, portfolio valuation, and DeFi workflows that require reliable USD price references for major cryptocurrencies without setting up API keys with individual exchanges. Pay-per-call micropayment model via x402 makes it suitable for occasional or low-frequency agent use without subscriptions.
Side effects
- Symbol not supported — only BTC, ETH, SOL, BNB, XRP, DOGE, ADA, AVAX, LINK, SUI are supported; unsupported symbols return missing or empty data
- Payment failure — x402 micropayment of 0.003 USDC on Base not completed, returns 402
- Fewer sources than expected — if some exchanges are down, n_sources will be lower and dispersion may be less meaningful
- Stale data — updated_at may lag real-time by seconds if upstream APIs are slow
- Invalid symbols format — malformed comma-separated list may result in errors or empty response
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"prices": {
"BTC": {
"price_usd": 80867.7,
"binance_usdt": 80860,
"coinbase_usd": 80875.4,
"change_24h_pct": 1.2
}
},
"sources": [
"https://api.binance.com",
"https://api.coinbase.com"
],
"updated_at": "2026-10-28T11:00:00Z"
}
}Tags
x402
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