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code-modernization

CAUTION

★ 42,352 by Anthropic Repository ↗ Mod source ↗

Code quality

Verdict — human review

"Official and capable — review what it writes before you commit."

— reviewed against Claude Code 2.1.288

Description

Anthropic's official legacy-code modernization plugin: /modernize assesses your codebase, maps business rules, and proposes an upgrade plan you approve before anything is rewritten. Writes files — review diffs before committing.

What it can do

Reach level 2 — writes or runs What does this mean? →

writes filesdrives Claudewrites the prompt boxreads filespersists statedraws

Can see: every prompt · every tool call

Raw API calls (22) +
  • $.clock.after
  • $.clock.every
  • $.clock.now
  • $.command.register
  • $.fs.exists
  • $.fs.list
  • $.fs.read
  • $.fs.stat
  • $.fs.write
  • $.prompt.fill
  • $.prompt.submit
  • $.store.get
  • $.store.set
  • $.turn.abort
  • $.ui.blit
  • $.ui.close
  • $.ui.invalidate
  • $.ui.log
  • $.ui.open
  • $.ui.resolve
  • $.ui.status
  • $.ui.toast

Static check passed on Claude Code 2.1.302.

Install

$/plugin marketplace add anthropics/claude-plugins-official
$/plugin install code-modernization

Check the repo for the exact name.

Details

Repository
anthropics/claude-plugins-official
Path in repo
plugins/code-modernization
License
Apache-2.0
Last updated
Oct 18, 2026
First seen
Oct 4, 2026
Last scanned
Oct 19, 2026

Related mods — reach level 2

Capability data is machine-generated by static analysis and may be incomplete. A SAFE badge is not a guarantee — read the code before installing anything with broad access. Not affiliated with Anthropic.

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