Summary
If you're working with OpenZeppelin proxy patterns, this walks you through UUPS, Transparent, and Beacon upgrades with the context you actually need. It covers the v4 to v5 migration gotcha (namespaced storage means you can't upgrade across major versions), shows you how to write initializers instead of constructors, and explains ERC-7201 namespaced storage with the actual formula for computing storage locations. The Hardhat and Foundry workflows are both documented, and there's a solid breakdown of when each proxy pattern makes sense. Honest take: the upgrade restrictions section alone will save you from a painful mistake if you're maintaining older contracts.
Install to Claude Code
npx -y skills add openzeppelin/openzeppelin-skills --skill upgrade-solidity-contracts --agent claude-codeInstalls into .claude/skills of the current project.
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Files
SKILL.md
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Plug Mailtrap into your AI workflow and let it handle the email.
Connect Mailtrap MCP →Agent, run crypto. Access onchain data & trade routes via 1inch.
Install now →Make coding agent sessions - Searchable, Shareable, Vendor-neutral & Scored.
Try For Free →Your agent targets a perfect 10 Code Health score. Deterministic. Every commit.
Try For Free →Integrate web data into your AI product. One API to scrape website & brand data.
Get API Key Now →belt cli automatically finds the best tools and skills for your agent. image, video, music, tts...
one prompt install →
