code-modernization

Anthropic official

Modernize legacy codebases (COBOL, legacy Java/C++/.NET, monolith web apps) with a structured preflight / assess / map / extract-rules / brief / (reimagine | transform | uplift) / harden / status workflow. Cross-stack rewrites, greenfield reimagining, and same-stack version uplifts (e.g. .NET Framework → .NET 8); an interactive topology viewer; specialist agents; and optional dynamic-workflow orchestration with adversarial verification.

Author
Anthropic
Version
—
Source
claude-plugins-official

Install

  1. 1Install from Claude Code

    /plugin install code-modernization@claude-plugins-official

    Run this inside Claude Code (or use /plugin > Discover and browse the official marketplace).

  2. 2Verify

    /plugin

    Open the plugin manager to confirm it is installed and enabled.

⚠️ Plugins from the official directory are reviewed by Anthropic, but always check the plugin homepage before use.

View plugin on GitHub ↗

Part of Anthropic's official plugin directory.