How does it prevent reentrancy?

It guides developers in implementing the Checks-Effects-Interactions (CEI) pattern and utilizing OpenZeppelin's ReentrancyGuard to stop malicious external calls.

What is the Solidity Security skill?

It is a specialized extension for Claude Code that provides expert guidance on writing, auditing, and optimizing secure smart contracts on Ethereum and other EVM-compatible blockchains.

Does it support the latest Solidity versions?

Absolutely, it covers patterns for Solidity 0.8+ (including built-in overflow checks) as well as legacy support using SafeMath for older versions.

Can this skill help with gas optimization?

Yes, it includes specific patterns for packing storage variables and using calldata to minimize transaction costs while maintaining high security standards.

Is this a replacement for a professional audit?

While it provides comprehensive security checks and follows industry best practices, it is intended to assist developers and prepare code for a final professional audit, not replace it.

Solidity Security & Best Practices

Name: Solidity Security & Best Practices
Author: HermeticOrmus

byHermeticOrmus

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Security & Testing

Master smart contract security to prevent vulnerabilities and implement industry-standard Solidity development patterns.

This skill equips Claude with specialized knowledge in Ethereum smart contract security, focusing on the prevention of critical vulnerabilities like reentrancy attacks, integer overflows, and unauthorized access. It provides real-time guidance on implementing the Checks-Effects-Interactions pattern, optimizing gas efficiency without compromising safety, and preparing codebases for professional audits. Whether you are building complex DeFi protocols or simple token contracts, this skill ensures your blockchain applications are resilient, efficient, and follow the latest secure development philosophies.

Key Features

01Built-in security checklists for smart contract audit preparation

02Implementation of secure access control and role-based permissions

030 GitHub stars

04Automated patterns for pull-over-push payment systems

05Detection and mitigation of reentrancy and front-running vulnerabilities

06Gas optimization patterns for storage packing and calldata usage

Use Cases

01Writing gas-efficient Solidity code for Ethereum and EVM-compatible chains

02Auditing existing smart contracts for common attack vectors

03Developing secure DeFi protocols with robust state management

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add hermeticormus/hermetic-academy solidity-security

For use in Claude.ai and ChatGPT

Download Skill