createX402PaymentSigner

createX402PaymentSigner(params): X402PaymentSigner

Defined in: src/x402/client.ts:293

Build an X402PaymentSigner bound to a single signing account.

The returned signer can produce many X402PaymentPayloads in succession — one per accepted requirement. Each call generates a fresh EIP-3009 nonce.

Parameters

params

CreateX402PaymentSignerParams

Returns

X402PaymentSigner

Example

import { privateKeyToAccount } from "viem/accounts";
import { createX402PaymentSigner } from "kawasekit";

const account = privateKeyToAccount("0x...");
const signer = createX402PaymentSigner({
  network: "testnet",
  account,
  asset: { kind: "known", id: "jpyc-v2" },
});

// ...after receiving a 402 with PAYMENT-REQUIRED header...
const paymentPayload = await signer.sign({ paymentRequirements });