Agent skill

Ats Optimizer

by revfactory in revfactory/harness-100

A specialized skill that provides resume keyword strategies and formatting guidelines for passing ATS (Applicant Tracking Systems).

Apache-2.0Auto-check passedBusiness, Finance & HR

Install Ats Optimizer

skills CLI
$ npx skills add revfactory/harness-100 --skill ats-optimizer -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install revfactory/harness-100 ats-optimizer --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/revfactory/harness-100.git skills-src && mkdir -p .claude/skills && cp -r skills-src/en/65-personal-branding/.claude/skills/ats-optimizer .claude/skills/ats-optimizer && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
ats-optimizer
GitHub stars
1.3k
Token cost
~1.3k tokens
SKILL.md length
264 words
Files
1
Skills in repo
464
Repo updated
First seen
Licence
Apache-2.0

At a glance

A specialized skill that provides resume keyword strategies and formatting guidelines for passing ATS (Applicant Tracking Systems).

  • Tasks that involve Recruiting and HR
  • SKILL.md covers Target Agents, ATS Parsing Principles, Keyword Optimization Strategy and Achievement Quantification…, plus 2 more sections
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

Ats Optimizer is an agent skill from revfactory/harness-100. A specialized skill that provides resume keyword strategies and formatting guidelines for passing ATS (Applicant Tracking Systems). Used by the resume-writer agent to create ATS-friendly resumes and maximize JD matching rates. Automatically applied in contexts such as 'ATS optimization', 'resume keywords', 'JD matching', 'resume format', 'applicant tracking system', 'application pass rate', etc. Note: Directly accessing ATS software (Workday, Greenhouse) or handling actual recruitment processes is outside the…

Its SKILL.md is about 1.3k tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

It sits in Business, Finance & HR, covering Recruiting and HR. It works with Workday. The licence is Apache-2.0.

When your agent uses it

  • Tasks that involve Recruiting and HR

Example prompts

  • “ATS optimization”
  • “resume keywords”
  • “JD matching”
  • “/ats-optimizer”

Requirements

  • Python 3
  • Docker

What it can do on your machine

Read from SKILL.md and the folder at commit 8e8d35c. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    No scripts in the folder and no shell commands in SKILL.md.

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    No URLs in SKILL.md.

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Ats Optimizer loads about 1.3k tokens when it runs. Until then it costs about 137 tokens; SKILL.md has 264 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~137
When it runs · the whole SKILL.md, loaded when a task matches
~1.3k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from revfactory/harness-100 at commit 8e8d35c, republished under its Apache-2.0 licence (© revfactory). 264 words, ~1,308 tokens.

Download SKILL.mdSave it as .claude/skills/ats-optimizer/SKILL.md (or your agent's skills folder).
name
ats-optimizer
description
A specialized skill that provides resume keyword strategies and formatting guidelines for passing ATS (Applicant Tracking Systems). Used by the resume-writer agent to create ATS-friendly resumes and maximize JD matching rates. Automatically applied in contexts such as 'ATS optimization', 'resume keywords', 'JD matching', 'resume format', 'applicant tracking system', 'application pass rate', etc. Note: Directly accessing ATS software (Workday, Greenhouse) or handling actual recruitment processes is outside the scope of this skill.

ATS Optimizer — ATS Pass Optimization Tool

A specialized skill that enhances the resume-writer agent's ATS optimization capabilities.

Target Agents

  • resume-writer — ATS-friendly resume writing, keyword optimization

ATS Parsing Principles

How ATS Reads Documents
1. Text extraction (PDF/DOCX -> Plain Text)
2. Section recognition (Experience, Education, Skills, etc.)
3. Keyword extraction + frequency analysis
4. Matching score calculation against JD keywords
5. Ranking and submission to recruiter
ATS-Compatible Formatting Rules
ItemRecommendedNot Recommended
File FormatDOCX > PDFImage PDF, HTML
LayoutSingle columnMulti-column, table-based
FontArial, Calibri, GeorgiaSpecial fonts
HeadersText headersImage/icon headers
BulletsStandard bullets (-, *)Custom graphic bullets
Section NamesUse standard namesCreative names
Standard Section Names (Ordered by ATS Recognition Rate)
- Work Experience / Professional Experience
- Education
- Skills / Technical Skills
- Certifications
- Projects
- Awards

Keyword Optimization Strategy

JD Keyword Extraction Process
1. Copy the full JD text
2. Extract the following types of keywords:
   - Hard Skills: Programming languages, tools, frameworks
   - Soft Skills: Leadership, communication, problem-solving
   - Industry Terms: Domain-specific terminology
   - Action Verbs: Designed, built, optimized, led
   - Qualifications: Degrees, certifications, years of experience
3. Count frequency and prioritize
4. Naturally incorporate into the resume
Keyword Density Guide
Keyword TypeRecommended CountPlacement
JD Core Keywords (3-5)2-3 timesSummary, Experience, Skills
JD Supporting Keywords (5-10)1-2 timesExperience, Projects
Industry Terms1 timeDistributed naturally
Keyword Matching Methods
JD ExpressionResume ReflectionPrinciple
"Python experience required""Built data pipelines using Python"Action + Result
"Team leading experience""Led a 5-person dev team, completed 3 projects"Quantification
"CI/CD experience""Built and operated CI/CD pipelines using Jenkins/GitHub Actions"Specific tools

Achievement Quantification Formula (STAR-Q)

Quantification Patterns
[Action Verb] + [Specific Activity] + [Quantitative Result]

Examples:
- "Designed and built an API server, reducing response time by 40% and achieving 1M daily transactions"
- "Introduced code review process, reducing post-deployment bugs by 60%"
- "Led a 5-person team to launch MVP within 3 months, acquiring 5,000 users"
Quantifiable Metric Types
CategoryExample Metrics
PerformanceResponse time, throughput, error rate, availability
EfficiencyTime savings, cost savings, automation rate
ScaleUser count, traffic, data size
TeamTeam size, mentees
BusinessRevenue contribution, customer acquisition, conversion rate

Section-by-Section ATS Optimization

Professional Summary (3-4 lines)
[Title/Role] + [Core Experience] + [Differentiating Competency] + [Quantitative Achievement]

Example:
"Backend developer with 7 years of experience designing and operating large-scale traffic processing systems.
Designed microservice architectures based on Java/Spring Boot,
built systems handling 100M daily transactions.
Reduced operational costs by 35% through AWS infrastructure optimization."
Work Experience
[Company] | [Title] | [Duration]

- [Action Verb] [Specific activity] achieving [Quantitative result]
- [Include JD keywords] [Achievement description]
- [Mention tech stack] [Project scale/impact]
Skills Section
Technical Skills:
- Languages: Python, Java, TypeScript, SQL
- Frameworks: Spring Boot, React, FastAPI
- Infrastructure: AWS (EC2, RDS, Lambda), Docker, Kubernetes
- Tools: Git, Jenkins, Grafana, Jira

(List technologies from the JD using exact notation)

ATS Score Self-Assessment

Check ItemWeightStatus
80%+ of JD core keywords included30%[ ]
Standard section names used15%[ ]
Single-column layout10%[ ]
Achievements quantified (2+ per role)20%[ ]
ATS-compatible file format10%[ ]
Standard fonts, no tables5%[ ]
Abbreviations written with full names5%[ ]
No spelling/grammar errors5%[ ]

© revfactory, Apache-2.0. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

Just SKILL.md in en/65-personal-branding/.claude/skills/ats-optimizer of revfactory/harness-100.

Open the folder on GitHubat commit 8e8d35c

Compare with similar skills

Ats Optimizer next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Ats Optimizer compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Ats Optimizer this skillrevfactory/harness-1001.3k—~1.3kAutomated safety check: PassApache-2.0
Ats Detectormohitagw15856/pm-claude-skills1.4k—~1.3kAutomated safety check: PassMIT
Get Jobagentenatalie/get-job.skill623—~1.7kAutomated safety check: PassCC-BY-NC-ND-4.0
Resume Reviewerweeelin98/ResumeDom158—~2.4kAutomated safety check: PassNone
Build Resume Portfolio Sitetao943/build-resume-portfolio-site195—~5.8kAutomated safety check: PassNone
Cyber Resume Reviewermubix/cyber-resume-reviewer-skill182—~2.9kAutomated safety check: PassMIT

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Works with

Questions about Ats Optimizer

What does Ats Optimizer do?

A specialized skill that provides resume keyword strategies and formatting guidelines for passing ATS (Applicant Tracking Systems). Ats Optimizer is an agent skill from revfactory/harness-100. A specialized skill that provides resume keyword strategies and formatting guidelines for passing ATS (Applicant Tracking Systems).

When should I use Ats Optimizer?

Ats Optimizer fits situations like: tasks that involve Recruiting and HR.

How do I install Ats Optimizer in Claude Code?

Run `npx skills add revfactory/harness-100 --skill ats-optimizer -a claude-code`. Or copy the skill folder (en/65-personal-branding/.claude/skills/ats-optimizer in revfactory/harness-100) into .claude/skills/ats-optimizer in your project. Claude Code loads it when a task matches its description.

How do I install Ats Optimizer in Codex?

Run `npx skills add revfactory/harness-100 --skill ats-optimizer -a codex`. Or copy the skill folder (en/65-personal-branding/.claude/skills/ats-optimizer in revfactory/harness-100) into .agents/skills/ats-optimizer in your project. Codex loads it when a task matches its description.

Can I use Ats Optimizer in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add revfactory/harness-100 --skill ats-optimizer -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/ats-optimizer, .gemini/skills/ats-optimizer, .github/skills/ats-optimizer and .opencode/skills/ats-optimizer in your project.

What does Ats Optimizer need to run?

SKILL.md names no scripts, command-line tools or credentials: Ats Optimizer is instructions for the agent only. Our summary lists: Python 3; Docker.

Does Ats Optimizer access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is Ats Optimizer safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Ats Optimizer use?

Ats Optimizer is published under the Apache-2.0 licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Ats Optimizer use?

About 1.3k tokens (SKILL.md is roughly 5.2k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Ats Optimizer?

Skills that share tags, products or a category with Ats Optimizer: Ats Detector (mohitagw15856/pm-claude-skills, 1.4k stars), Get Job (agentenatalie/get-job.skill, 623 stars), Resume Reviewer (weeelin98/ResumeDom, 158 stars) and Build Resume Portfolio Site (tao943/build-resume-portfolio-site, 195 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Ats Optimizer?

revfactory (a GitHub user) maintains it in revfactory/harness-100, which has 1,290 GitHub stars. The repository holds 464 skills in this directory. The repository was last updated on March 22, 2026.

Source: revfactory/harness-100 on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.