UserOp Validator

A robust ERC-4337 UserOperation validator compliant with EIP-7562.

Overview

This project implements a standalone validator for ERC-4337 UserOperations. It utilizes @ethereumjs/vm to simulate the validation phase of a UserOperation and enforces the strict rules defined in EIP-7562, including:

• Opcode Restrictions: Banning opcodes like GASPRICE, TIMESTAMP, BLOCKHASH, etc.
• Storage Access Rules: Enforcing storage access restrictions for Senders, Factories, and Paymasters.
• Gas Limits: Validating verificationGasLimit, preVerificationGas, etc.

Installation

npm install

Usage

Library

import { validateExecutionRules } from './src/validator';
import { VM } from '@ethereumjs/vm';

// ... setup VM ...
const cleanup = validateExecutionRules(vm, senderAddress);
// ... run validation ...
cleanup();

Development

• Build: npm run build
• Test: npm test
• Lint: npm run lint

Roadmap

See ROADMAP for the detailed development plan.

License

MIT

userop-validator