resume-ats-optimizer

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

A resume review guide for Applicant Tracking Systems (ATS), the software employers use to read, filter, and rank job applications.

In plain words
What is it for?
It helps check resume compatibility, compare keywords with a job description, identify parsing issues, and suggest ATS-friendly changes.
Why use it?
It helps find formatting and keyword problems that can stop a resume from matching a job posting or reaching a recruiter.

Skill for Claude CodeCodex

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

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.

agentmods
npx agentmods add skills/natsummerance/readmd/resume-ats-optimizer
Any agent
npx skills add Natsummerance/readMD --skill resume-ats-optimizer
Clone the repo
git clone --depth 1 https://github.com/Natsummerance/readMD

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/natsummerance/readmd/resume-ats-optimizer.svg)](https://agentmods.dev/skills/natsummerance/readmd/resume-ats-optimizer)
Your own site
<a href="https://agentmods.dev/skills/natsummerance/readmd/resume-ats-optimizer"><img src="https://agentmods.dev/badge/skills/natsummerance/readmd/resume-ats-optimizer.svg" alt="Measured on agentmods" 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. Scan, not verified.
Origin 100% copy Near-identical to another mod 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 6d ago against content hash 03ad07d45afa, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, 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 6d 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

This is a copy

100% identical to resume-ats-optimizer — 0 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

assets/upstream/paramchoudhary-ResumeSkills/74ae19e7c62b0516d1c298328e5544976c12da5d/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. 6d 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 Natsummerance/readMD (22 stars, last pushed 2d 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. It is 100% identical to resume-ats-optimizer, differing in 0 lines, and is treated as a copy.

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