review-duplication
Use this skill during code reviews to proactively investigate the codebase for duplicated functionality, reinvented wheels, or failure to reuse existing project best practices and shared utilities.
Install / Use
npx skills add google-gemini/gemini-cliInstalls into whichever agent you are using.
Gemini Rules
Gemini CLI config
Quality Score
Category
AutomationSupported Platforms
Our assessment of review-duplication
review-duplication scores 92/100 on our quality scale, 762nd of 2,866 Automation skills we index (top 27%).
We have not analysed the Gemini Rules file itself yet, so the content part of this score is an estimate until our crawler reaches it.
With 108,735 GitHub stars, it is one of the more widely adopted skills in the catalogue.
Maintenance, license and trust
- The repository was last updated today, so review-duplication is actively maintained.
- Our last check on 2026-10-17 found the source still online.
- It is released under the Apache-2.0 license, a permissive license that allows use, modification and commercial use with attribution.
- Its trust signals score 100/100, with no cautions. These come from repository metadata, not a code audit — read the skill file before letting an agent act on it.
review-duplication compared with similar skills
All 4 of these similar skills score higher than review-duplication; compare them before choosing.
| Skill | Score | Stars | Updated | Format |
|---|---|---|---|---|
| review-duplication (this skill)by google-gemini | 92 | 108.7k | today | Gemini Rules |
| Agent-Reachby Panniantong | 100 | 109.2k | today | CLAUDE.md |
| headroomby headroomlabs-ai | 100 | 78.9k | today | CLAUDE.md |
| Scraplingby D4Vinci | 100 | 97.9k | today | MCP Server |
| crawl4aiby unclecode | 100 | 87.0k | 1d ago | MCP Server |
Frequently asked questions
- How do I install review-duplication?
- Run
npx skills add google-gemini/gemini-cli. The install tabs above show the steps for each supported agent. - Which AI agents does review-duplication work with?
- It is written for Gemini CLI and Zed, as a Gemini Rules file. Other agents that read the same format can often use it too.
- Is review-duplication safe to use?
- It is Apache-2.0-licensed and scores 100/100 on trust signals. Skills are instructions an agent will follow, so read the file before installing it and do not approve commands you do not understand.
- Is review-duplication still maintained?
- The repository was last updated today, so review-duplication is actively maintained.
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Languages
Trust signals
From repository metadata: license, adoption, age and documentation. Not a code audit — see the Safety scan above for what the skill file itself contains.