Stackup Bundler

Open-source ERC-4337 bundler written in Golang by Stackup.

Open-source

Visit website

This link will take you to a third-party site not owned or operated by Alchemy.

What is Stackup Bundler?

Stackup Bundler is a modular, high-performance, and fully compliant ERC-4337 bundler built in Go by the engineering team at Stackup, most notably Stackup's co-founder, Hazim (@hazim-j). The repository was archived in October 2024 and is now read-only. Developers can still self-host the open-source bundler from the archived codebase.

Sponsor gas and bundle user ops in your app or on your chain

Get your API key

Web3 dapps and developer tools related to Stackup Bundler

Discover blockchain applications that are frequently used with Stackup Bundler.

AutoAir AI

Crypto portfolio dashboards

AutoAir AI is an airdrop farming automation tool on zkSync Era that uses AI to analyze past airdrop data and execute on-chain tasks.

Sygnum Web3 Recovery

Alchemy CustomerWallet security tools

Sygnum Web3 Recovery provides a regulated wallet recovery solution for Safe accounts, making self-custody recovery reliable and user-friendly.

Ankr

RPC node providers

Ankr is an all-in-one Web3 development hub providing a full suite of tools to build Web3 apps.

Holdstation

Alchemy CustomerSmart contract wallets

Smart Contract Wallet for futures trading, and one of the first to embrace native AA on zkSync Era.

Best Account abstraction (ERC-4337) bundlers

Discover more web3 applications and developer tools.

See all dapps

Developer resources from Alchemy

Overview

Wallets

What are Paymasters? (ERC-4337)

Learn the Function of Paymaster Smart Contracts in ERC-4337

Launching support for account abstraction on Zora and Frax

Blog

Partnership

Launching support for account abstraction on Zora and Frax

We are excited to announce Account Abstraction support for Frax and Zora, two new layer 2 blockchains built on top of Optimism’s Superchain ecosystem.

Metropolis makes it easy to deploy smart contracts using Alchemy's account abstraction infrastructure

Case study

Wallets

Metropolis makes it easy to deploy smart contracts using Alchemy's account abstraction infrastructure

Learn how Metropolis is leveraging Alchemy's account abstraction infrastructure to redefine smart contract deployment with their new product, Metal.

Stackup Bundler alternatives

Explore web3 competitors and apps like Stackup Bundler.

Alchemy Bundler

Open-source ERC-4337 bundler written in Rust by Alchemy.

Pimlico

Alchemy Customer

Pimlico is an infrastructure platform for building smart wallets, offering ERC-4337 bundlers, verifying paymasters, and ERC-20 paymasters.

Infinitism Bundler

Reference open-source ERC-4337 bundler written in Typescript by the ERC-4337 authors.

Silius

Silius is an open-source ERC-4337 bundler written in Rust by Vid Kersic.

View all alternatives

App store listings are independently reviewed and written by Alchemy using a combination of inbound submissions, editorial research, public project sources, and third-party directories, including ecosystem data from The Grid under the Open Database License, DefiLlama, DappRadar, Reown, and chain ecosystem pages.

Build blockchain magic

Alchemy combines the most powerful web3 developer products and tools with resources, community and legendary support.

Get your API key