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@x402-xec/transactions

v0.1.0

Published

18 days ago

Offline XEC funding transaction construction for x402-XEC

0High
0Medium
0Low

@x402-xec/transactions

Offline-only XEC funding transaction construction for x402-XEC invoices.

buildFundingTx deterministically selects caller-provided UTXOs in their given order, pays invoice.payTo exactly invoice.amountSats, signs through caller-provided ecash-lib signatories, and returns serialized transaction hex, its offline-derived txid, the selected inputs, the candidate funding outpoint, the fee, and change.

Amounts cross this package boundary as canonical base-10 strings and are calculated with bigint. Token-bearing UTXOs are rejected. Change below the configured dust threshold is omitted and folded into the transaction fee.

Security and scope

This package only constructs transactions offline. It performs no network calls, does not connect to Chronik, and has no broadcast API. It does not receive or store private keys: callers supply signing callbacks and retain custody.

This is not safe for mainnet use yet. There is no automatic payment flow or wallet integration. Future Tonalli Wallet integration will provide signer UX. RMZ and Teyolia are not integrated.