optimize-resume

optimize-resume is a skill for Claude Code from StephanieKoehl/resume-best-practices. It costs 39 tokens per session (1,209 once invoked), scanned A, original, MIT.

A resume-editing skill that checks and improves resume content for applicant-tracking systems, which are software tools employers use to screen applications.

In plain words
What is it for?
Use it to review a resume, improve achievement bullets, check ATS-friendly structure, or tailor the text to an optional job posting.
Why use it?
It helps address formatting, wording, and keyword problems that can make a resume harder for screening systems or recruiters to read.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter.

Good fit Use it to review a resume, improve achievement bullets, check ATS-friendly structure, or tailor the text to an optional job posting.

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Install with agentmods
npx agentmods add skills/stephaniekoehl/resume-best-practices/optimize-resume
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 StephanieKoehl/resume-best-practices --skill optimize-resume
Clone the repo
git clone --depth 1 https://github.com/StephanieKoehl/resume-best-practices

Made for: Claude Code.

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 optimize-resume

README.md
[![agentmods](https://agentmods.dev/badge/skills/stephaniekoehl/resume-best-practices/optimize-resume/github.svg)](https://agentmods.dev/skills/stephaniekoehl/resume-best-practices/optimize-resume)
Your own site
<a href="https://agentmods.dev/skills/stephaniekoehl/resume-best-practices/optimize-resume"><img src="https://agentmods.dev/badge/skills/stephaniekoehl/resume-best-practices/optimize-resume/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 optimize-resume

Your own site · 80×15
<a href="https://agentmods.dev/skills/stephaniekoehl/resume-best-practices/optimize-resume"><img src="https://agentmods.dev/badge/skills/stephaniekoehl/resume-best-practices/optimize-resume.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 39 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,209 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.
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 $0.00039 $0.01209
Opus 5 $0.00019 $0.00605
Sonnet 5 $0.00008 $0.00242
Haiku 4.5 $0.00004 $0.00121

Measured 11d ago against content hash 6ba4c2a88e8c, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

optimize-resume 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 11d 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.

.claude/skills/optimize-resume/SKILL.md · 124 lines

How it starts

The opening of the file, as written. The whole thing — 124 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Resume Optimizer

You are a resume optimization expert. Your job is to analyze and improve resumes for maximum ATS compatibility and hiring impact.

Input

  • Resume file: $ARGUMENTS[0] — the resume to optimize (markdown, JSON, plain text, or HTML)
  • Job posting (optional): $ARGUMENTS[1] — a job posting URL or file to tailor the resume against

Analysis Process

Step 1: Read and Understand

Read the resume file. Identify:

  • Current structure and formatting
  • Number of roles, bullets per role, total length
  • The candidate's career narrative / throughline

Step 2: ATS Compatibility Check

Score each item (pass/fail):

  • Single column layout — no tables or multi-column formatting
  • Standard section headings — "Experience," "Education," "Skills" (not creative alternatives)
  • No images, logos, or icons in the content
  • No skill bars or proficiency ratings — these convey nothing to ATS or recruiters
  • Consistent date format — "Jan 2023 – Present" or "2023 – Present"
  • Both acronyms and spelled-out versions present — "Technical Program Manager (TPM)"
  • Text is selectable (not embedded in images)
  • Length: 1 page for < 10 years experience, 2 pages max for senior roles

Step 3: Bullet Point Analysis

For each bullet, check against Google's XYZ Formula: "Accomplished [X] as measured by [Y], by doing [Z]"

Flag bullets that:

  • Lead with responsibilities instead of results ("Responsible for..." "Managed...")
  • Use weak verbs: helped, assisted, participated in, was involved in, worked on, supported
  • Have no quantification — every bullet should include a number, percentage, or metric
  • Are too long — more than 2 lines means split or cut
  • Use first person ("I managed..." should be "Managed...")

Suggest power verbs: Led, Shipped, Built, Drove, Designed, Launched, Scaled, Delivered, Established, Architected, Automated, Identified, Reduced, Increased, Accelerated

Read the full file on GitHub · 124 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. 11d ago First seen · 124 lines · 0 tokens per session scan A 6ba4c2a88e8c

Subscribe to this mod's changes

optimize-resume is a skill published in the GitHub repository StephanieKoehl/resume-best-practices (3 stars, last pushed 5mo ago), licensed MIT. It adds 39 tokens to every session and 1,209 once invoked, about $0.0002 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 2026-08-31.

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