@alchemy/aa-infra

This package, along with @alchemy/common, replaces @account-kit/infra. This is a low-level package. Most users should use @alchemy/wallet-apis unless you need to call bundler or paymaster RPCs directly via viem.

Alchemy Account Abstraction infrastructure utilities. Provides Rundler-specific fee estimation and RPC types for use with viem's bundler client.

Installation

npm install @alchemy/aa-infra @alchemy/common viem

Key Exports

• estimateFeesPerGas - Custom fee estimation using Alchemy's rundler_maxPriorityFeePerGas RPC method. Pass this as userOperation.estimateFeesPerGas when creating a viem BundlerClient pointed at Alchemy's Rundler.
• RundlerClient / RundlerRpcSchema - TypeScript types extending viem's BundlerClient with Rundler-specific RPC methods

Usage

import { estimateFeesPerGas } from "@alchemy/aa-infra";
import { createBundlerClient } from "viem/account-abstraction";
import { sepolia } from "viem/chains";
import { alchemyTransport } from "@alchemy/common";

const bundlerClient = createBundlerClient({
  chain: sepolia,
  transport: alchemyTransport({ apiKey: "YOUR_API_KEY" }),
  userOperation: {
    estimateFeesPerGas,
  },
});

License

MIT