Netresearch Skills Marketplace
Development

TYPO3 Extension Upgrade

Systematic TYPO3 extension upgrades to newer LTS versions with modern PHP compatibility. Extension Scanner assessment, Rector for PHP migrations, Fractor for FlexForms/TypoScript/YAML/Fluid, PHPStan, and testing setup. Version-specific guidance for v11→v12, v12→v13, and dual-compatibility.

Latest release v3.7.0

Install

Pick whichever fits your project — they all reach the same skill.

  1. Claude Code via this marketplace 
    /plugin install typo3-extension-upgrade@netresearch-claude-code-marketplace
  2. npx any Agent Skills CLI 
    npx skills add https://github.com/netresearch/typo3-extension-upgrade-skill --skill typo3-extension-upgrade

    Universal Agent Skills CLI from skills.sh — works across Claude Code, Cursor, GitHub Copilot, Codex, Gemini CLI and 30+ more agents.

  3. composer require PHP project, as a package 
    composer require netresearch/typo3-extension-upgrade-skill

    Requires netresearch/composer-agent-skill-plugin — resolves Agent Skills as Composer dependencies in PHP projects, auto-discovers skills, generates AGENTS.md.

  4. composer skills:add PHP project, direct source 
    composer skills:add github:netresearch/typo3-extension-upgrade-skill

    Provided by netresearch/composer-agent-skill-plugin — pins skill repos directly without going through Packagist, locks them in composer.skills.lock.

What you can do with it

  • Systematic TYPO3 extension upgrades to newer LTS versions with modern PHP compatibility
  • Extension Scanner assessment, Rector for PHP migrations, Fractor for FlexForms/TypoScript/YAML/Fluid, PHPStan, and testing setup
  • Version-specific guidance for v11→v12, v12→v13, and dual-compatibility

What it expects in your project

Tags

  • development
  • typo3