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Polyform Crypto Price API
x402
Polyform Crypto Price API is a paid API for AI agents from api.polyform.org, paid per call via x402, $0.003/call, status unknown (last checked 2026-09-29).
Returns the current USD price of one or more cryptocurrencies, sourced from DefiLlama, via a single micropayment per call.
Price / call$0.003
Success—
StatusUnknown
How this service works
Pay-per-call data endpoints for AI agents. USDC on Base via x402. No account, no API key — one micropayment per call.
Output
Returns a JSON object containing a prices map keyed by asset name (e.g. 'bitcoin'), each entry including the USD price, asset symbol, ISO timestamp of the observation, and a confidence score between 0 and 1. Also returns total count and the data source (DefiLlama).
Example use cases
Live BTC price for trading bot
“What's the current price of Bitcoin in USD right now? I need the latest value with a confidence score for my automated trading logic.”
Portfolio valuation snapshot
“Can you fetch today's USD prices for Bitcoin and Ethereum so I can calculate the current value of my crypto portfolio?”
Crypto price alert check
“What is the current USD price of Bitcoin as of right now? I want to check if it's crossed $65,000 so I can decide whether to sell.”
Technical details
Endpoint
GEThttps://api.polyform.org/v1/crypto/price?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a quick, no-account, no-API-key cryptocurrency price lookup and are willing to pay a small USDC micropayment per call via the x402 protocol. Ideal for AI agents operating autonomously that need real-time or near-real-time crypto prices sourced from DeFi data aggregators like DefiLlama, without managing API credentials.
Side effects
- Missing or invalid query parameter returns an error response
- Unsupported cryptocurrency symbol may return empty prices map or error
- Payment failure (insufficient USDC balance or x402 protocol error) results in 402 response with no data
- DefiLlama upstream outage may result in stale or unavailable price data
- Rate or network timeout if the upstream data provider is slow
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"count": 1,
"prices": {
"bitcoin": {
"asOf": "2026-09-28T21:00:00.000Z",
"symbol": "BTC",
"priceUSD": 63000,
"confidence": 0.99
}
},
"source": "DefiLlama"
}
}Tags
x402
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