Overview

The @router402/sdk package provides a TypeScript SDK for managing Kernel v3.1 smart accounts with session key support. It handles smart account creation, deployment, session key lifecycle, and transaction execution.

Installation

npm install @router402/sdk viem

Or with Bun:

bun add @router402/sdk viem

Quick Start

import { Router402Sdk } from "@router402/sdk";
import { baseSepolia } from "viem/chains";

const sdk = new Router402Sdk({
  chain: baseSepolia,
  pimlicoApiKey: "your-pimlico-api-key",
});

// Get the deterministic smart account address
const address = await sdk.getSmartAccountAddress(walletClient);

// Full account setup (deploy + session key) in one call
const result = await sdk.setupAccount(walletClient, eoaAddress, {
  usdcAddress: "0x036CbD53842c5426634e7929541eC2318f3dCF7e",
  onStatus: (status) => console.log("Status:", status),
});

Features

Feature	Description
Smart Accounts	Create and manage Kernel v3.1 smart contract wallets
Session Keys	Generate, approve, and manage delegated signing keys
Gasless Transactions	Gas fees sponsored by Pimlico paymaster
Account Setup	One-call orchestration of the full setup flow
Backend Support	Export session keys for server-side transaction execution

Sections

• Getting Started -- Installation, setup guide, and chat completions example