How does this skill help prevent reentrancy attacks?

The skill identifies vulnerable external calls and suggests implementing the Checks-Effects-Interactions pattern or utilizing OpenZeppelin's ReentrancyGuard to ensure state is updated before funds are transferred.

Can this skill help reduce transaction costs?

Absolutely. It includes gas optimization patterns such as packing storage variables into 256-bit slots and using calldata instead of memory for external function arguments.

Does it provide security testing examples?

It includes standardized testing templates for Hardhat and Chai to help developers verify that their security measures are working as intended before deployment.

Does it support older versions of Solidity?

Yes, it provides specific guidance for both modern Solidity (0.8.0+) with built-in overflow checks and legacy versions that require SafeMath integration.

Is this skill useful for DeFi developers?

Yes, it covers critical DeFi patterns including slippage protection, pull-over-push payment distributions, and front-running mitigation through commit-reveal schemes.

Solidity Security

Name: Solidity Security
Author: HermeticOrmus

byHermeticOrmus

•

Security & Testing

Implements secure smart contract patterns and audits Solidity code to prevent common blockchain vulnerabilities and exploits.

This skill equips Claude with specialized knowledge to act as a security-focused blockchain developer and auditor. It provides industry-standard implementation patterns to mitigate critical risks such as reentrancy attacks, integer overflows, and unauthorized access control. By leveraging the Checks-Effects-Interactions pattern, OpenZeppelin integration, and gas-optimization techniques, this skill ensures that your decentralized applications are not only secure but also efficient. It is particularly valuable when drafting DeFi protocols, managing digital assets, or preparing smart contracts for professional third-party audits.

Key Features

012 GitHub stars

02Integer overflow/underflow protection across multiple Solidity versions

03Gas optimization strategies including storage packing and calldata usage

04Reentrancy prevention using Checks-Effects-Interactions and guards

05Front-running mitigation through commit-reveal and slippage patterns

06Robust access control and role-based permission implementation

Use Cases

01Developing secure decentralized finance (DeFi) and payment protocols

02Implementing emergency stop mechanisms and circuit breakers in dApps

03Auditing existing smart contracts for high-severity vulnerabilities

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add hermeticormus/libreuiux-claude-code solidity-security

For use in Claude.ai and ChatGPT

Download Skill