Permissionless.js

Permissionless.js is a Typescript library built on top of viem for interacting with ERC-4337 bundlers and paymasters.

Features

• Full ERC-4337 Support: We support all bundler actions following ERC-4337.
• Gas Sponsorship: We support paymaster actions to allow you to easily sponsor gas fees.
• Built on & for viem: We provide convenient helper functions like createBundlerClient to easily create viem clients.
• More to come soon...

Installation

Install viem as a peer dependency

npm install viem permissionless

bun install viem permissionless

yarn add viem permissionless

Quick start

Create a bundler client, and start sending user operations!

import { createBundlerClient } from "permissionless/clients/pimlico"
import { goerli } from "viem/chains"
import { http } from "viem"

const bundlerClient = createBundlerClient({
    chain: goerli,
    transport: http(`https://api.pimlico.io/v1/goerli/rpc?apikey=${pimlicoApiKey}`) // Use any bundler url
})

const userOpHash = await bundlerClient.sendUserOperation({
    userOperation: signedUserOperation,
    entryPoint: entryPoint
})

For detailed documentation visit our docs page.

Contributors

For a full explanation of Permissionless.js, please visit our docs page

Build permissionless.js locally with:

bun run build

License

Distributed under an MIT License. See LICENSE for more information.

Contact

Feel free to ask any questions in our Telegram group