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chainquery finalizepsbt
x402
chainquery finalizepsbt is a paid API for AI agents from x402.chainquery.com, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-15).
Finalizes a PSBT (Partially Signed Bitcoin Transaction) and returns the network-ready raw transaction hex via Bitcoin Core RPC, pay-per-call over x402.
Price / call$0.005
Success—
StatusUnknown
How this service works
chainquery Bitcoin RPC: pay-per-call Bitcoin Core over x402, no API key. Finalize a complete PSBT and extract the network-ready raw transaction. Bitcoin Core finalizepsbt.
Output
Returns the Bitcoin Core finalizepsbt result object containing: 'psbt' (the finalized PSBT base64 if not fully signed), 'hex' (the network-ready raw transaction hex string if complete), and 'complete' (boolean indicating whether all inputs are fully signed and the raw tx is extractable).
Example use cases
Example prompt
“Finalize this PSBT for me and give me the raw transaction hex I can broadcast: cHNidP8BAHUCAAAAASaBcTce3/KF6Tet7qSze3gADAVmy7utVDCRT2HNyvnnAQAAAAD/////AgD0Bh...”
Technical details
Endpoint
GEThttps://x402.chainquery.com/v1/rpc/finalizepsbtWhen to prefer
Use this endpoint when you need to finalize a PSBT after all signers have contributed their signatures and want to extract the raw transaction hex for broadcast, without running your own Bitcoin Core node. Ideal for pay-as-you-go use cases where an API key is not desired.
Side effects
- Invalid or malformed PSBT string causes RPC error
- PSBT not fully signed — returns complete:false with no hex
- Malformed params JSON array returns 400 bad request
- x402 payment not completed results in 402 Payment Required
- Bitcoin Core node temporarily unavailable returns 5xx error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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