r402-xrpl

XRP Ledger support for the x402 payment protocol, part of the r402 workspace.

Highlights

• Exact scheme — the buyer signs an XRPL Payment transaction; the facilitator submits the signed blob. The payer pays the network fee (areFeesSponsored: false).
• CAIP-2 networks — xrpl:0 (mainnet), xrpl:1 (testnet), xrpl:2 (devnet).
• XRP and RLUSD — native drops or issued-currency decimal values. price_tag copies areFeesSponsored: false (and issuer for IOU).
• Sequence or ticket — extra.assetTransferMethod selects account Sequence or a pre-created TicketSequence.
• In-process facilitator — verify and settle against JSON-RPC HTTP (overridable). Duplicate settle is blocked by SettlementCache keyed by transaction hash (TTL floor 120s). supported().signers["xrpl:*"] is empty.

Cargo Features

Quick Start (server price tag)

use r402_xrpl::{XrplExact, XRP};

let tag = XrplExact::price_tag(pay_to, XRP::testnet().amount(1_000_000u64));

Documentation

• Crate docs: https://docs.rs/r402-xrpl
• Project README: ../../README.md

License

Dual-licensed under MIT and Apache-2.0.