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Refactor Verify

Category: Engineering  ·  Sub-category: code-quality  ·  Last updated:
Proves a behavior-preserving code change (refactor, rename, split, merge, extract, inline, or delete of confirmed-dead code) is actually complete. Plans the change as a dependency tree, executes it from the leaves up, and after each step proves 1:1 semantic equivalence through four independent checks — exported symbol-set diff, per-node AST diff, full behavioral test suite, and call-site closure via find-references. Runs before claiming any such change is done. Works for any language with a test runner and a way to grep for symbols.
Security AStatic scan found no risk patternsHow grading works ›

About this skill (catalog notes)

Refactor Verify includes explicit scope boundaries (an explicit 'when not to use' or 'out of scope' section); 9 code blocks for direct copy-paste. At roughly 4,087 words the SKILL.md is on the longer end of the catalog distribution.

Indexed lastmod
Catalog position
Engineering · code-quality
Indexed related skills
10

How Refactor Verify fits the catalog

Refactor Verify 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

The operator asked for a change that's supposed to preserve behavior — a refactor, a rename, a split, an extract, a dead-code deletion. Your job is to prove that behavior was preserved, not just produce a diff that looks right.

What this skill does

Refactor Verify 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/refactor-verify/ and loads when your prompt matches the skill's trigger.

Who uses this skill

The Refactor Verify 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 158,000+ 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/refactor-verify
curl -L https://claudskills.com/skills/refactor-verify/SKILL.md \
  -o ~/.claude/skills/refactor-verify/SKILL.md

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

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

Telegram

📱 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.

Frequently asked questions

How do I install the Refactor Verify Claude Code skill?
Install via the ClaudSkills desktop app (one click) or copy SKILL.md from the source repository to ~/.claude/skills/refactor-verify/SKILL.md and restart Claude Code. Both flows are detailed at claudskills.com/install/.
What does the Refactor Verify skill do?
Proves a behavior-preserving code change (refactor, rename, split, merge, extract, inline, or delete of confirmed-dead code) is actually complete. Plans the change as a dependency tree, executes it from the leaves up, and after each step proves 1:1 semantic equivalence through four independent checks — exported symbol-set diff, per-node AST diff, full behavioral test suite, and call-site closure via find-references. Runs before claiming any such change is done. Works for any language with a test runner and a way to grep for symbols.
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 Refactor Verify skill?
Use Refactor Verify 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 Refactor Verify" or describe the task and let Claude pick). Browse related skills at /category/engineering/.
What is a Claude Code skill and how does the Refactor Verify 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. Refactor Verify 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/.

Cite this skill

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

APA
ClaudSkills. (2026). Refactor Verify [Claude Code skill]. ClaudSkills. https://claudskills.com/skills/refactor-verify/
BibTeX
@misc{refactor-verify-2026,
  author    = {ClaudSkills},
  title     = {Refactor Verify [Claude Code skill]},
  year      = {2026},
  publisher = {ClaudSkills},
  url       = {https://claudskills.com/skills/refactor-verify/}
}

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Security scan

Grade A · scanned 2026-07-23 — free static scan against the OWASP Agentic Skills Top 10.

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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
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