delegate-call-risks

What problem does it solve?

Delegatecall is a powerful but dangerous pattern in Solidity that can compromise storage integrity, context, and initialization safety when used in proxies or modular contracts. This skill outlines the risks and the patterns needed to implement safe upgradeable architectures and avoid common pitfalls.

Core Features & Use Cases

• Storage-layout integrity: ensure proxy and implementation share identical storage layouts to prevent slot collisions.
• Context preservation: maintain the caller and value context correctly when delegating calls.
• Initialization safety: disable or guard initialize functions to prevent unauthorized access to proxy logic.
• Upgrade patterns awareness: recognize and safely implement UUPS/Transparent and Diamond-style upgrade patterns.
• Security-first practices: apply a defensive checklist to reduce risk in real-world deployments.

Quick Start

Audit your Solidity proxy implementations and apply the delegatecall safety patterns to ensure storage layouts, context preservation, and proper initialization controls.