https://github.com/eth-infinitism/account-abstraction
https://github.com/eth-infinitism/account-abstraction
Last synced: about 2 months ago
JSON representation
- Host: GitHub
- URL: https://github.com/eth-infinitism/account-abstraction
- Owner: eth-infinitism
- License: gpl-3.0
- Created: 2022-01-24T15:01:07.000Z (over 3 years ago)
- Default Branch: develop
- Last Pushed: 2025-04-23T10:39:39.000Z (2 months ago)
- Last Synced: 2025-04-23T11:35:23.666Z (2 months ago)
- Language: TypeScript
- Size: 3.45 MB
- Stars: 1,662
- Watchers: 37
- Forks: 702
- Open Issues: 3
-
Metadata Files:
- Readme: README.md
- License: LICENSE
- Audit: audits/EIP_4337_–_Ethereum_Account_Abstraction_Incremental_Audit_Feb_2023.pdf
Awesome Lists containing this project
- awesome-account-abstraction - Infinitism
README
# Description
This repository contains the tools and resources for working with [ERC-4337](https://eips.ethereum.org/EIPS/eip-4337) Account Abstraction smart contracts. This includes the code for the singleton `EntryPoint` contract that is deployed by our team on most EVM-compatible networks.
# Overview
Account abstraction allows users to interact with Ethereum using smart contract wallets instead of EOAs, without compromising decentralization, providing benefits like:
- Social recovery
- Batched transactions
- Sponsored transactions (gas abstraction)
- Signature abstraction
- Advanced authorization logic
# Repository Structure
## Core Components
- **EntryPoint Contract** (`contracts/core/EntryPoint.sol`): The central contract that processes UserOperations
- **BaseAccount** (`contracts/core/BaseAccount.sol`): Base implementation for smart contract accounts
- **BasePaymaster** (`contracts/core/BasePaymaster.sol`): Helper class for creating a paymaster
- **StakeManager** (`contracts/core/StakeManager.sol`): Manages deposits and stakes for accounts and paymasters
- **NonceManager** (`contracts/core/NonceManager.sol`): Handles nonce management for accounts
- **UserOperationLib** (`contracts/core/UserOperationLib.sol`): Utilities for working with UserOperations
- **Helpers** (`contracts/core/Helpers.sol`): Common constants and helper functions
## Sample Implementations
- **SimpleAccount** (`contracts/accounts/SimpleAccount.sol`): Basic implementation of an ERC-4337 account
- **Simple7702Account** (`contracts/accounts/Simple7702Account.sol`): A minimal account to be used with EIP-7702 (for batching) and ERC-4337 (for gas sponsoring)
- **SimpleAccountFactory** (`contracts/accounts/SimpleAccountFactory.sol`): A sample factory contract for SimpleAccount
# Developer setup
## Installation
### Clone the repository:
````bash
git clone https://github.com/eth-infinitism/account-abstraction.git
cd account-abstraction
yarn install
````
### Compilation:
```bash
yarn compile
```
### Testing:
```bash
yarn test
```
## Entrypoint Deployment
The EntryPoint contract is the central hub for processing UserOperations. It:
- Validates UserOperations
- Handles account creation (if needed)
- Executes the requested operations
- Manages gas payments and refunds
The EntryPoint is deployed by using
```bash
hardhat deploy --network {net}
```
[EntryPoint v0.8](https://github.com/eth-infinitism/account-abstraction/releases/latest) is always deployed at address `0x4337084d9e255ff0702461cf8895ce9e3b5ff108`
This repository also includes a number of audited base classes and utilities that can simplify the development of AA related contracts.
## Usage
### For projects integrating the library
If you are building a project that uses account abstraction and want to integrate our contracts:
```bash
yarn add @account-abstraction/contracts
```
### For Paymaster development
```solidity
import "@account-abstraction/contracts/core/BasePaymaster.sol";
contract MyCustomPaymaster is BasePaymaster {
/// implement your gas payment logic here
function _validatePaymasterUserOp(
PackedUserOperation calldata userOp,
bytes32 userOpHash,
uint256 maxCost
) internal virtual override returns (bytes memory context, uint256 validationData) {
context = “”; // specify “context” if needed in postOp call.
validationData = _packValidationData(
false,
validUntil,
validAfter
);
}
}
```
### For Smart Contract Account development
```bash
import "@account-abstraction/contracts/core/BaseAccount.sol";
contract MyAccount is BaseAccount {
/// implement your authentication logic here
function _validateSignature(PackedUserOperation calldata userOp, bytes32 userOpHash)
internal override virtual returns (uint256 validationData) {
// UserOpHash can be generated using eth_signTypedData_v4
if (owner != ECDSA.recover(userOpHash, userOp.signature))
return SIG_VALIDATION_FAILED;
return SIG_VALIDATION_SUCCESS;
}
}
```
# Resources
- [Homepage](https://www.erc4337.io/)
- [Blog](https://erc4337.mirror.xyz/)
- [X Account](https://x.com/erc4337)
- [YouTube Channel](https://www.youtube.com/@ERC-4337)
- [Bundlebear](https://www.bundlebear.com/overview/all)
- [Vitalik Buterin - a history of account abstraction](https://www.youtube.com/watch?v=iLf8qpOmxQc)
- [Beyond 4337: Vitalik Buterin's Vision for the Future of Account Abstraction](https://www.youtube.com/watch?v=zpqa1Z4UpiA)
- [Exploring the Future of Account Abstraction by Yoav Weiss](https://www.youtube.com/watch?v=63Wd5mPla-M)
- [Native Account Abstraction in Pectra, rollups and beyond](https://www.youtube.com/watch?v=FYanFF-yU6w)
- [Vitalik Buterin - account abstraction without Ethereum protocol changes](https://medium.com/infinitism/erc-4337-account-abstraction-without-ethereum-protocol-changes-d75c9d94dc4a)
- [Unified ERC-4337 mempool](https://notes.ethereum.org/@yoav/unified-erc-4337-mempool)
- [Bundler reference implementation](https://github.com/eth-infinitism/bundler)
- [Discord server](http://discord.gg/fbDyENb6Y9)