CLAUDE PLUGIN

code-modernization

Anthropic · Claude Code

What this plugin does

Guided modernization for any legacy codebase: start with /modernize, get an assessment, an interactive map, the business rules mined from the code, and a plan you approve, then an upgrade, a rewrite or a rebuild with independent proof that the new code behaves like the old. Includes security hardening, a one-page report, specialist agents, and an optional live progress pane (early access).

Open in Claude Marketplace ↗ Source repository ↗ Publisher website ↗

Catalog observations

Sources: Claude Marketplace · Official
Works with: Claude Code
Category: Development
Reported installs: 5,860
First observed: 2026-10-03 21:29 UTC
Last observed: 2026-10-08 00:02 UTC
Source badge: Anthropic verified, as displayed by Claude Marketplace.

Installation counts are reported by Claude Marketplace, not independently verified active users. Observation dates are not release dates. Pricing and account requirements must be checked with the publisher.

Install in Claude Code

Choose a source and review what the plugin adds before installing.

Official

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

Claude Code installation documentation

Source evidence

Listing and manifest JSON

Descriptions and compatibility labels come from the linked sources. Where both sources match, the GitHub description is used because web summaries may be shortened. We have not independently tested the declared capabilities.