Anthropic just dropped code-modernization - official Claude plugin for migrating legacy codebases
What it does:
• Targets COBOL, old Java, C++, .NET Framework, monolithic web apps
• Auto-extracts business rules with exact file/line citations
• Generates modernization plan for human sign-off
• Writes characterization tests BEFORE rewriting code
• Validates new code behaves identically to legacy version
Install: /plugin install code-modernization@claude-plugins-official
This is huge for enterprises sitting on decades-old infrastructure. Claude just became the migration tool for companies too scared to touch their legacy stack.
What it does:
• Targets COBOL, old Java, C++, .NET Framework, monolithic web apps
• Auto-extracts business rules with exact file/line citations
• Generates modernization plan for human sign-off
• Writes characterization tests BEFORE rewriting code
• Validates new code behaves identically to legacy version
Install: /plugin install code-modernization@claude-plugins-official
This is huge for enterprises sitting on decades-old infrastructure. Claude just became the migration tool for companies too scared to touch their legacy stack.