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reentrancy

Detect reentrancy vulnerabilities in Solidity smart contracts by analyzing external calls and state updates.

1|1|Updated Feb 18, 2026
Search Tags:#security#vulnerability#auditing#smart contracts#solidity#reentrancy
One-click install
npx skills add https://github.com/Apegurus/solidity-argus --skill reentrancy
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: reentrancy
Source: https://github.com/Apegurus/solidity-argus/tree/main/skills/vulnerability-patterns/reentrancy
Command: npx skills add https://github.com/Apegurus/solidity-argus --skill reentrancy

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) components.

What problem does it solve?

This Skill identifies and helps prevent reentrancy vulnerabilities in Solidity smart contracts, a common and critical security flaw that can lead to significant financial loss.

Core Features & Use Cases

  • Pattern Detection: Analyzes code for known reentrancy patterns, including classic, cross-function, cross-contract, and read-only reentrancy.
  • Vulnerability Research: Leverages historical incidents like The DAO hack and Cream Finance to provide context and examples.
  • Remediation Guidance: Offers clear steps and code examples for fixing reentrancy issues using the Checks-Effects-Interactions pattern and reentrancy guards.
  • Use Case: A developer can use this Skill to proactively scan their new smart contract code for reentrancy risks before deployment, ensuring greater security.

Quick Start

Analyze the provided Solidity code for reentrancy vulnerabilities.

Frequently Asked Questions about reentrancy

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I detect reentrancy vulnerabilities in Solidity smart contracts?▼

Detect reentrancy vulnerabilities in Solidity smart contracts by analyzing code for specific patterns and external call vulnerabilities. The Skill examines external calls, state updates, and reentrancy guards to identify security risks.

What types of reentrancy attacks can be identified in smart contract code?▼

Reentrancy attack types identifiable in smart contract code include classic, cross-function, cross-contract, and read-only reentrancy. The analysis leverages historical incidents like The DAO hack to provide context for these exploits.

How do I fix reentrancy vulnerabilities in Solidity code?▼

Fix reentrancy vulnerabilities in Solidity code using the Checks-Effects-Interactions pattern and reentrancy guards. The Skill provides clear remediation steps and code examples to resolve common external call exploits.

Does this reentrancy detection work for smart contracts before deployment?▼

Yes, reentrancy detection works proactively for smart contracts before deployment. Developers can scan new Solidity code to identify external call vulnerabilities and apply remediation strategies, ensuring greater security prior to release.

What are the limitations of detecting reentrancy vulnerabilities using pattern analysis?▼

Limitations of detecting reentrancy vulnerabilities using pattern analysis include reliance on known exploit patterns like The DAO hack and Cream Finance. Complex or novel cross-contract reentrancy paths may require deeper state update and external call tracing.

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