Master DeFi Security: 10 Smart Contract Bug Classes Guide

Master DeFi Security: 10 Smart Contract Bug Classes Guide

This AI agent skill is a comprehensive guide designed for developers and teams involved with DeFi smart contracts. The guide provides a systematic reference for identifying and understanding ten critical bug classes within DeFi protocols. Each class includes details such as root causes, vulnerable code segments, fixes, grep patterns, and real examples of vulnerabilities addressed.

What this skill does

• Offers a complete reference for ten specific DeFi smart contract bug classes.
• Supports detection of vulnerabilities related to accounting state desynchronization, access control, incomplete paths, off-by-one errors, oracle manipulation, ERC4626 vault-related issues, reentrancy, flash loans, signature replay, and proxy/upgrade bugs.
• Integrates identifiable patterns to aid in vulnerability detection using AI coding agents such as Claude Code, Cursor, and Codex.

Who it is for

• Developers tasked with securing DeFi smart contracts.
• Security specialists involved in defensive research and authorised security testing.
• Engineering teams seeking structured guidance on vulnerability identification using AI agents.

Use cases

• Developers can leverage this guide to understand and rectify vulnerabilities in smart contracts.
• Security researchers can efficiently identify and document patterns and potential exploits specific to DeFi protocols.
• Development teams can integrate the guide within AI coding agents for automated vulnerability detection.

Technical details

• Compatible with AI agent platforms: Claude Code, Cursor, Codex.
• Details 10 specific bug classes including real world examples and patterns for detection.
• For authorised security testing, defensive research and educational use only.

This guide aids in the structured identification and understanding of DeFi vulnerabilities, thereby supporting the development and maintenance of more secure smart contracts.

Source & Licence

This package is built on open-source work published by Olaradiallysymmetrical491 (Olaradiallysymmetrical491/web3-bug-bounty-hunting-ai-skills) and distributed under MIT. The original licence text and copyright notice are included in your download.

Personal and commercial use, modification and redistribution are permitted, provided the original copyright and licence notice are retained.

Your purchase covers curation, licence verification, packaging, documentation and instant delivery. It does not grant exclusive rights to the underlying open-source code, which remains available under its original licence.

Delivery & Support

• Delivery: instant — a secure download link is emailed to you as soon as payment is confirmed.
• Format: ZIP archive containing the skill files, documentation and the original licence.
• Support: support@mcpcart.com — we aim to reply within 2 business days.
• Updates: updates are included only where stated on this page.

Refunds

This is a digital product delivered immediately after purchase. By completing your order you request immediate delivery and acknowledge that, once the download has been accessed, the statutory right to cancel no longer applies to the extent permitted by law. Refund requests are handled in accordance with our published Refund Policy.

Claude, Codex, Gemini and Cursor are trademarks of their respective owners. MCP Cart is an independent marketplace and is not affiliated with, endorsed by, or sponsored by any of them. Compatibility references describe interoperability only.