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Account Abstraction

Integrate Account Abstraction (ERC-4337) into viem.

While Account Abstraction is not built into the core viem library, you can use a third-party library like permissionless.js to integrate with ERC-4337.

Libraries:

permissionless.js

permissionless.js is a TypeScript library built on viem for interacting with ERC-4337 bundlers, paymasters, and User Operations.

Below are instructions for setting up a Bundler Client.

1. Install

npm
npm i permissionless

2. Set up a Bundler Client

import { createClient, http } from 'viem'
import { mainnet } from 'viem/chains'
import { bundlerActions } from 'permissionless'
 
const bundlerClient = createClient({ 
  chain: mainnet,
  transport: http("https://api.pimlico.io/v1/goerli/rpc?apikey=YOUR_API_KEY_HERE")
}).extend(bundlerActions)

3. Consume Actions

Now you can consume Actions that are supported by permissionless.js.

See a full list of Bundler Actions.

import { createClient, http } from 'viem'
import { mainnet } from 'viem/chains'
import { bundlerActions } from 'permissionless'
 
const bundlerClient = createClient({ 
  chain: mainnet,
  transport: http("https://api.pimlico.io/v1/goerli/rpc?apikey=YOUR_API_KEY_HERE")
}).extend(bundlerActions)
 
const supportedEntryPoints = await bundlerClient.supportedEntryPoints()