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chainquery joinpsbts — Bitcoin Core PSBT Combiner
x402
chainquery joinpsbts — Bitcoin Core PSBT Combiner 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).
Joins multiple distinct Partially Signed Bitcoin Transactions (PSBTs) into a single combined PSBT using Bitcoin Core's joinpsbts RPC, served 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. Join multiple distinct PSBTs into a single PSBT. Bitcoin Core joinpsbts.
Output
Returns a base64-encoded PSBT string that is the result of joining all input PSBTs into one combined transaction, as returned by Bitcoin Core's joinpsbts RPC method.
Example use cases
Example prompt
“Combine these two PSBTs into a single PSBT using the Bitcoin Core joinpsbts RPC: 'cHNidP8BAH...' and 'cHNidP8BAF...'”
Technical details
Endpoint
GEThttps://x402.chainquery.com/v1/rpc/joinpsbtsWhen to prefer
Use this endpoint when you need to combine multiple distinct PSBTs into a single PSBT without requiring an API key, paying only per call via x402. Ideal for CoinJoin workflows, multisig coordination, or any scenario where separate parties contribute PSBTs that must be merged before signing and broadcasting.
Side effects
- Invalid or malformed PSBT base64 strings cause RPC error
- PSBTs with conflicting inputs or overlapping UTXOs will be rejected
- Missing required 'params' query parameter with PSBT array returns error
- Payment failure over x402 protocol blocks access
- Malformed JSON in params query parameter causes parse error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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