ClaudSkills / Engineering / code-quality

codemod

Q: What is a Claude Code skill and how does the codemod skill fit in?

A Claude Code skill is a SKILL.md file that lives under ~/.claude/skills/<name>/ and tells the Claude Code CLI agent how to perform a specific task (instructions, prompts, allowed tools). Skills are auto-discovered at session start. codemod is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the Engineering category. Learn more at https://claudskills.com/learn/what-is-skill-md/.

Category: Engineering · Sub-category: code-quality · Last updated: 2026-05-21

type:cli

Use Codemod CLI whenever the user wants to migrate, upgrade, update, or refactor a codebase in a repeatable way. This includes framework migrations, library upgrades, version bump migrations, API surface changes, deprecations, and large-scale mechanical edits. First search the Codemod Registry for an existing package, prefer deterministic codemods before open-ended AI rewrites, run dry-runs before apply, and create a codemod package only when no suitable package exists.

Security AStatic scan found no risk patternsHow grading works ›

About this skill (catalog notes)

codemod is published as a SKILL.md file in this catalog. The SKILL.md runs to about 1,131 words, in the catalog's typical mid-range.

Original author: codemod
Indexed lastmod: 2026-05-21
Catalog position: Engineering · code-quality
Indexed related skills: 10

How codemod fits the catalog

codemod sits in the Engineering category under the code-quality sub-topic in the ClaudSkills catalog. There are 10 related skills indexed alongside it; comparing a few before installing usually reveals which fits your workflow best.

These notes are auto-generated from features detected in the SKILL.md file and from this catalog's structure — they aren't part of the source repository.

From the source SKILL.md

codemod-compatibility: mcs-v1 codemod-skill-version: 1.0.0

What this skill does

codemod is a community-contributed Claude Code skill in the code-quality sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/codemod-cli/ and loads when your prompt matches the skill's trigger.

Who uses this skill

The codemod Claude Code skill is built for software engineers, backend developers, full-stack teams, and technical leads building and maintaining production systems. It's part of ClaudSkills (also referred to as Claude Skills or Claude Code Skills) — the open community-curated registry of 115,000+ SKILL.md files for Anthropic's Claude Code agent and the wider Claude ecosystem (Claude API, Claude Agent SDK).

How to install

Free

Manual install (2 steps)

mkdir -p ~/.claude/skills/codemod-cli
curl -L https://claudskills.com/skills/codemod-cli/SKILL.md \
  -o ~/.claude/skills/codemod-cli/SKILL.md

Or just download SKILL.md directly and drop it into ~/.claude/skills/codemod-cli/. Claude Code auto-discovers it on next session.

Skills live at ~/.claude/skills/codemod-cli/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\codemod-cli\SKILL.md on Windows. See the full install guide for step-by-step instructions.

📱 Install from your phone or desktop Telegram

Open @claudskills_bot on Telegram, tap Open Desktop App, and the desktop app installs this skill for you. Or share the bot link with a colleague — they get the same one-tap install. Learn more →

Pro

One-click install via the desktop app

The ClaudSkills desktop app installs any skill directly into ~/.claude/skills/ with one click — no terminal required. Pro starts at $9/mo or $149 lifetime.

Pro

For the full experience including quality scoring and one-click install features for each skill — upgrade to Pro.

See pricing → Download desktop app

Frequently asked questions

How do I install the codemod Claude Code skill?

Install via the ClaudSkills desktop app (one click) or copy SKILL.md from the source repository to ~/.claude/skills/codemod-cli/SKILL.md and restart Claude Code. Both flows are detailed at claudskills.com/install/.

What does the codemod skill do?

Is this skill free to install?

Yes. ClaudSkills is an open registry — every skill keeps its source repository's license, and manual install via copy is free. ClaudSkills Pro ($9/mo, $79/yr, or $149 one-time) adds one-click install via the desktop app and a multi-signal Quality Score.

When should I use the codemod skill?

Use codemod when your Claude Code task falls under the Engineering category — specifically in the code quality area. Claude Code auto-discovers installed skills and invokes the right one based on the task description, so you can also ask Claude directly (e.g. "use codemod" or describe the task and let Claude pick). Browse related skills at /category/engineering/.

What is a Claude Code skill and how does the codemod skill fit in?

A Claude Code skill is a SKILL.md file that lives under ~/.claude/skills/<name>/ and tells the Claude Code CLI agent how to perform a specific task (instructions, prompts, allowed tools). Skills are auto-discovered at session start. codemod is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the Engineering category. Learn more at /learn/what-is-a-claude-skill/.

Attribution & license

Source: https://github.com/codemod/codemod/blob/HEAD/crates/cli/src/templates/ai-native-cli/codemod-cli/SKILL.md
Author: codemod

Cite this skill

If you reference this skill in a blog post, paper, or documentation, you can cite it as:

APA

codemod. (2026). codemod [Claude Code skill]. ClaudSkills. https://claudskills.com/skills/codemod-cli/

BibTeX

@misc{codemod-cli-2026,
  author    = {codemod},
  title     = {codemod [Claude Code skill]},
  year      = {2026},
  publisher = {ClaudSkills},
  url       = {https://claudskills.com/skills/codemod-cli/}
}

Embed this skill

Promote, attribute, or link this skill from your own README, blog post, or documentation. All three snippets are free to use — no sign-up, no API key. More distribution surfaces →

Badge

[![ClaudSkills](https://claudskills.com/badge/codemod-cli.svg)](https://claudskills.com/skills/codemod-cli/?utm_source=badge&utm_medium=readme&utm_campaign=skill_badge)

Security scan

Grade A · scanned 2026-06-13 — free static scan against the OWASP Agentic Skills Top 10.

No risk patterns were found in any of the ten OWASP-aligned categories. How grading works ›

✓ Prompt injection
✓ Data exfiltration
✓ Supply chain
✓ Reverse shell
✓ Credentials
✓ Execution
✓ Filesystem
✓ Persistence
✓ Obfuscation
✓ Network

Show this grade on your repo (click to copy):

[![Security: A](https://img.shields.io/badge/Security-A-2e7d32)](https://claudskills.com/skills/codemod-cli/#security)

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Browse all Engineering skills in the ClaudSkills registry, or explore these other picks from the same category:

Browse all Engineering skills → Top 100 skills

Part of ClaudSkills — the open registry for Claude Skills & Claude Code Skills. · What's New · Install guide · About · llms.txt

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