resume-ats-optimizer

resume-ats-optimizer is a skill for Claude Code, Codex from Paramchoudhary/ResumeSkills. It costs 21 tokens per session (2,091 once invoked), scanned A, original, MIT.

A guide for checking and improving resumes for Applicant Tracking Systems, or ATS software that reads and filters job applications before recruiters review them. It compares resume content and formatting with a job description.

In plain words
What is it for?
Use it to check resume readability, find formatting problems, compare keywords with a job posting, and suggest clearer keyword placement.
Why use it?
A resume can be overlooked when automated software cannot read its layout or does not find the terms related to the job.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: positional $N argument.

Good fit Use it to check resume readability, find formatting problems, compare keywords with a job posting, and suggest clearer keyword placement.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/paramchoudhary/resumeskills/resume-ats-optimizer
About the project

ResumeSkills is a collection of AI-agent skills for improving resumes, preparing job applications, practicing interviews, and planning career moves. It is intended for job seekers, career changers, and professionals using Claude Code for tasks such as ATS checks, job-description matching, resume tailoring, and salary negotiation. The catalogue entry consists of the project's career-focused skills.

Paramchoudhary/ResumeSkills · 2,190 stars · on GitHub

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add Paramchoudhary/ResumeSkills --skill resume-ats-optimizer
Clone the repo
git clone --depth 1 https://github.com/Paramchoudhary/ResumeSkills

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for resume-ats-optimizer

README.md
[![agentmods](https://agentmods.dev/badge/skills/paramchoudhary/resumeskills/resume-ats-optimizer/github.svg)](https://agentmods.dev/skills/paramchoudhary/resumeskills/resume-ats-optimizer)
Your own site
<a href="https://agentmods.dev/skills/paramchoudhary/resumeskills/resume-ats-optimizer"><img src="https://agentmods.dev/badge/skills/paramchoudhary/resumeskills/resume-ats-optimizer/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for resume-ats-optimizer

Your own site · 80×15
<a href="https://agentmods.dev/skills/paramchoudhary/resumeskills/resume-ats-optimizer"><img src="https://agentmods.dev/badge/skills/paramchoudhary/resumeskills/resume-ats-optimizer.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 21 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,091 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • Socket pass 23 May 2026
  • Snyk warn 23 May 2026
  • NVIDIA SkillSpector pass 7 Sept 2026
How audits are shown
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00021 $0.02091
Opus 5 $0.00010 $0.01045
Sonnet 5 $0.00004 $0.00418
Haiku 4.5 $0.00002 $0.00209

Measured 10d ago against content hash 03ad07d45afa, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

resume-ats-optimizer scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 10d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

Origin

Copies of this mod

2 near-identical copies found in the catalogue:

skills/resume-ats-optimizer/SKILL.md · 320 lines

How it starts

The opening of the file, as written. The whole thing — 320 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Resume ATS Optimizer

When to Use This Skill

Use this skill when the user wants to:

  • Optimize their resume for Applicant Tracking Systems (ATS)
  • Check if their resume will pass automated screening
  • Understand why their applications aren't getting responses
  • Mentions keywords like: "ATS", "not getting interviews", "resume not working", "optimize resume", "keyword optimization"

Also use when the user provides a resume file and mentions they're applying to jobs.

Core Capabilities

  • Parse resume and test ATS compatibility
  • Extract and analyze keywords against job descriptions
  • Identify formatting issues that break ATS parsers
  • Calculate match scores between resume and job postings
  • Suggest keyword additions and placements
  • Generate ATS-friendly formatting recommendations

The ATS Problem

75% of resumes are rejected by Applicant Tracking Systems before a human ever sees them. Companies use ATS to:

  • Filter out unqualified candidates automatically
  • Search for specific keywords from job requirements
  • Parse resumes into structured data
  • Rank candidates by keyword match percentage

Common reasons resumes fail ATS:

  1. Poor formatting (tables, columns, headers/footers)
  2. Missing keywords from job description
  3. Inconsistent section headers
  4. Non-standard fonts or special characters
  5. Text embedded in images
  6. Incorrect file format

ATS Compatibility Checklist

File Format

  • ✅ Use .docx or .pdf (not .pages, .odt)
  • ✅ PDF must be text-based, not scanned image
  • ✅ File name: "FirstName_LastName_Resume.pdf"

Font & Formatting

  • ✅ Standard fonts: Arial, Calibri, Georgia, Times New Roman
  • ✅ Font size: 10-12pt for body, 14-16pt for headers
  • ✅ No text boxes, tables, or columns
  • ✅ No headers/footers (put contact info in body)
  • ✅ No images, graphics, or charts
  • ✅ Consistent date formats (MM/YYYY)
  • ✅ Standard bullet points (•, -, *)

Section Headers

Use standard, recognizable headers:

  • ✅ "Professional Experience" or "Work Experience" (not "Where I've Been")
  • ✅ "Education" (not "Academic Background")
  • ✅ "Skills" (not "Core Competencies")
  • ✅ "Summary" or "Professional Summary"

Read the full file on GitHub · 320 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 10d ago First seen · 320 lines · 21 tokens per session scan A 03ad07d45afa

Subscribe to this mod's changes

resume-ats-optimizer is a skill published in the GitHub repository Paramchoudhary/ResumeSkills (2,190 stars, last pushed 2mo ago), licensed MIT. It adds 21 tokens to every session and 2,091 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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