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2s.io Bitcoin UTXO Lookup
x402
2s.io Bitcoin UTXO Lookup is a paid API for AI agents from 2s.io, paid per call via x402, $0.0036/call, status unknown (last checked 2026-09-14).
Returns all unspent transaction outputs (UTXOs) for a Bitcoin address, sorted largest-first, with txid, output index, value in sats and BTC, confirmation status, and block height.
Price / call$0.0036
Success—
StatusUnknown
How this service works
Unspent transaction outputs (UTXOs) for a Bitcoin address (free/keyless): each with txid, output index, value (sats + BTC), confirmation status, and block height. Sorted largest-first. For coin selection, balance verification, and wallet tooling.
Output
A list of UTXOs for the requested Bitcoin address, each containing the transaction ID (txid), output index (vout), value in both satoshis and BTC, confirmation status (confirmed/unconfirmed), and block height. Results are sorted largest-value-first, limited to up to 500 entries.
Example use cases
Example prompt
“Can you pull the UTXOs for the Bitcoin address bc1qxy2kgdygjrsqtzq2n0yrf2493p83kkfjhx0wlh and show me which ones are confirmed, sorted by size?”
Technical details
Endpoint
GEThttps://2s.io/api/crypto/btc-utxosWhen to prefer
Use this endpoint when you need UTXO-level detail for a Bitcoin address — especially for coin selection, building raw transactions, or verifying spendable balance at the output level. Prefer this over balance-only endpoints when you need individual output metadata like txid, vout, confirmation status, and block height.
Side effects
- Invalid or malformed Bitcoin address returns an error response
- Address with no UTXOs returns an empty list
- Limit parameter out of range (below 1 or above 500) causes a validation error
- Network or upstream blockchain data source unavailability causes a 5xx error
- Payment failure or insufficient USDC balance blocks the request (x402 payment required)
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object |
Tags
x402
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