Directory/Skills Directory/Resume ATS Optimizer

Resume ATS Optimizer skill

Checks a resume for formats that applicant tracking systems read badly and compares its keywords with a job description to give a match score. It suggests exact wording and placement changes, then scores the result again.

  • For candidatescategory
  • No scriptsinstructions only, sends nothing
  • Any AI appupload, or copy and paste

Our review

Grade B

Practical and structured, though written for candidates and some of its stats are unsourced.

View the source (opens in a new tab)How to install

What the Resume ATS Optimizer skill does

Best for
Recruiters prepping candidates before a submittal
Author
ResumeSkills (paramchoudhary)
Needs
Nothing beyond your AI assistant
License
MIT
Runs in
Claude, Gemini CLI, Gemini Enterprise, Gemini app (as a Gem), ChatGPT, Codex, Grok
Installs
14,193 (as shown by the directory we found it on)

Our review

Grade B

Practical and structured, though written for candidates and some of its stats are unsourced.

Safety check: Instructions only. No scripts, no outside calls, no install commands.

Read the full skill on its source page (opens in a new tab)

How to use Resume ATS Optimizer in Claude, ChatGPT, Gemini or Grok

Claude upload

  1. Download the skill from its source. A skill is a folder with a SKILL.md file inside; zip that folder if it is not zipped already.
  2. In Claude, open Settings (or Customize), then Skills, then Upload.
  3. Upload the skill ZIP as it is. Don't unzip it.
  4. Check it is switched on.
  5. Test it: start a new chat and type Use resume-ats-optimizer, then paste what you have.

Team and Enterprise owners may need to allow skills first.

ChatGPT Business, Enterprise or Edu upload

  1. Download the skill from its source. A skill is a folder with a SKILL.md file inside; zip that folder if it is not zipped already.
  2. In the sidebar, click Plugins, then the Skills tab.
  3. Click Create, then Upload from your computer, and pick the skill ZIP.
  4. ChatGPT scans it, then uses it on its own or when you @ mention it.

An admin has to switch skills on for the workspace first.

ChatGPT Plus, Pro or Free paste

  1. Copy the SKILL.md text from the skill's source page (ChatGPT).
  2. In ChatGPT, click Projects, then New project, and name it after the skill.
  3. Open the project's Instructions and paste.
  4. Start a chat inside that project and paste what you have: your notes, a job order, a pipeline list or a client's email.

These plans have no skill upload. A project keeps the instructions for every chat inside it.

Gemini Enterprise upload

  1. Download the skill from its source. A skill is a folder with a SKILL.md file inside; zip that folder if it is not zipped already.
  2. In the Gemini Enterprise web app, click Skills in the menu.
  3. Click +, then Upload skill, pick the skill ZIP and click Import.
  4. Call it with / in a chat, or let Gemini pick it up on its own.

Standard, Plus and Pay-as-you-go editions can upload. An admin has to switch skills on first.

Gemini app paste

  1. Copy the SKILL.md text from the skill's source page (Gemini Gem).
  2. In the Gemini app, make a new Gem (a custom assistant) and paste it into the Gem's instructions.
  3. Chat with that Gem whenever you need the skill.

Grok paste

  1. Copy the SKILL.md text from the skill's source page (Grok).
  2. Paste it into a chat with your Grok Bot. The first line asks it to save the skill with Skill Creator.
  3. Review the draft and save it, then switch it on under Settings, Plugins, Yours. Call it with / in a chat.

Developers folder

  1. Download the skill from its source. A skill is a folder with a SKILL.md file inside; zip that folder if it is not zipped already.
  2. Gemini CLI or Antigravity: unzip into .gemini/skills/ in your project, or ~/.gemini/skills/ for every project.
  3. Claude Code: ~/.claude/skills/, or install a whole pack as a plugin from our GitHub repo. Grok Build: .grok/skills/.

Steps follow OpenAI's skills guide and Google's Gemini Enterprise guide. Menu names change, so check there if a label looks different.

Tools that pair with this skill

Full directory

Connect the MCP server too, so your assistant can act inside the tool while it follows this skill: Greenhouse, Workday.

Guide: Free Claude Skills for Recruiters: 7 GitHub Picks Ranked by Setup (2026)

Questions

Is the Resume ATS Optimizer skill free?

The skill file is published openly by ResumeSkills (paramchoudhary) under the MIT license. It needs nothing beyond your AI assistant.

Does Resume ATS Optimizer work in Gemini?

Yes. Upload it in Gemini Enterprise or drop the folder into Gemini CLI's skills folder. In the regular Gemini app, paste its instructions into a Gem.

Can I trust it with my data?

It has no scripts and sends nothing anywhere. Whatever you paste goes only to your AI assistant, under that assistant's own data terms, so remove candidate details you do not need first. It can still steer how the assistant answers, so read it before you use it.

More skills like this

Full Skills Directory

Linked to ResumeSkills (paramchoudhary)'s own page, not copied here. The grade is Work Insiders' opinion on the day we read the file; authors can change their files at any time. How we make money.