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BTC Node API — Bitcoin Address Lookup
x402
BTC Node API — Bitcoin Address Lookup is a paid API for AI agents from btcnode.uk, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-12).
Retrieves Bitcoin address portfolio data including balance, transaction count, and UTXO details for a given address.
Price / call$0.005
Success—
StatusUnknown
How this service works
Bitcoin blockchain data, address portfolio, transaction tracing, fee forecasting, whale monitoring, SEC EDGAR filings, URL scraping, AI summarization, and Reddit API via x402 micropayments on Base.
Output
Returns a JSON object containing the queried Bitcoin address, its current balance in BTC, total transaction count, and UTXO count — providing a snapshot of the wallet's on-chain portfolio state.
Example use cases
Monitor whale wallet activity
“Keep an eye on that major Bitcoin holder's address bc1qxy2kgdygjrsqtzq2n0yrf2493p83kkfjhx0wlh and tell me if their balance or transaction count changes significantly over the next few days.”
Audit client portfolio holdings
“I need to verify the on-chain balance and transaction history for our custody client's Bitcoin address bc1qxy2kgdygjrsqtzq2n0yrf2493p83kkfjhx0wlh to reconcile against our internal records.”
Track exchange deposit confirmation
“Pull the UTXO count and recent transaction activity for the address bc1qxy2kgdygjrsqtzq2n0yrf2493p83kkfjhx0wlh so I can confirm our withdrawal actually landed and is spendable.”
Technical details
Endpoint
GEThttps://btcnode.uk/api/addr/%7Baddress%7DWhen to prefer
Use this endpoint when you need quick, structured on-chain portfolio data (balance, tx count, UTXOs) for a specific Bitcoin address and are comfortable paying $0.005 USDC per call via x402 on Base. Prefer this over heavier blockchain explorers when a lightweight address summary is sufficient.
Side effects
- Invalid or malformed Bitcoin address returns an error response
- Address with no activity may return zero values
- Network or node connectivity issues may cause timeouts
- x402 micropayment failure on Base network may block access
- Rate limiting if too many calls are made rapidly
Output
Schema · Response
{
"type": "json",
"example": {
"address": "bc1...",
"balance": 1.5,
"tx_count": 12,
"utxo_count": 3
}
}Tags
x402
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