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r402-keeta

Keeta chain support for the x402 payment protocol, part of the r402 workspace.

Highlights

Exact scheme — the buyer signs one SEND block (ASN.1 DER). The facilitator sponsors network fees via TransmitOptions::with_fee_signer and cannot rewrite the signed transfer.
CAIP-2 networks — keeta:21378 (mainnet) and keeta:1413829460 (testnet).
No client extra from /supported — getExtra is undefined. price_tag sets enricher: None. Optional extra.external is a client-only SEND field when the seller sets it on requirements. supported().signers["keeta:*"] lists fee-payer accounts.
In-process facilitator — Block::try_from verifies DER + signature. Settle is serialized per fee-payer (mpsc) and parallel across payers.

Cargo Features

Feature	Surface
`client`	Buyer-side `UserClient::init_builder` signing.
`server`	Server-side `PriceTag` generation.
`facilitator`	On-chain verify and settle (`keetanetwork-client`).
`telemetry`	`tracing` instrumentation.
`full`	All of the above.

Quick Start (server price tag)

use r402_keeta::{KeetaExact, USDC};

let tag = KeetaExact::price_tag(pay_to, USDC::keeta_testnet().amount(1_000_000u128));

Documentation

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

License