Agent skill

Application Optimiser

by Zal4DW in Zal4DW/career-helper

A skill your agent uses when the user is applying for a specific role and wants help with the application itself, such as tailoring or fixing a CV for ATS, researching the company and role, planning…

Custom licenceAuto-check passedBusiness, Finance & HR

Install Application Optimiser

skills CLI
$ npx skills add Zal4DW/career-helper --skill application-optimiser -a claude-code

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

GitHub CLI
$ gh skill install Zal4DW/career-helper application-optimiser --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/Zal4DW/career-helper.git skills-src && mkdir -p .claude/skills && cp -r skills-src/career-helper/skills/application-optimiser .claude/skills/application-optimiser && 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
application-optimiser
GitHub stars
110
Token cost
~2.8k tokens
SKILL.md length
1,279 words
Files
19 (incl. scripts, references)
Skills in repo
16
Repo updated
First seen
Licence
Custom licence

At a glance

A skill your agent uses when the user is applying for a specific role and wants help with the application itself, such as tailoring or fixing a CV for ATS, researching the company and role, planning…

  • Works in 5 steps: Company & Role Research → CV Optimisation for ATS → Application Strategy & Timeline → …
  • The user is applying for a specific role and wants help with the application itself
  • SKILL.md covers Capabilities, Quick Start, Accessibility and 1. Company & Role Research, plus 10 more sections
  • Runs Python scripts from its folder

What it does

Application Optimiser is an agent skill from Zal4DW/career-helper. Use when the user is applying for a specific role and wants help with the application itself, such as tailoring or fixing a CV for ATS, researching the company and role, planning the application, writing a cover letter or supporting statement, or producing an upload-ready CV PDF. Delivers verified outputs with layout and ATS text-layer checks.

Its SKILL.md is about 2.8k tokens, which your agent loads only when the skill is triggered. The skill folder holds 20 other files, including scripts and reference files (for example `references/ATS-Helper.md`, `references/application-strategy-template.md` and `references/career-returner-cv-guide.md`).

It sits in Business, Finance & HR, covering Resume and CV writing and PDF. The repository describes itself as: A career helper skill for claude (desktop/web/code).

When your agent uses it

  • The user is applying for a specific role and wants help with the application itself
  • Such as tailoring
  • Fixing a CV for ATS
  • Researching the company and role

Example prompts

  • “/application-optimiser”

Requirements

  • Python 3

Workflow steps

5 steps, taken from the step headings in SKILL.md.

  1. Company & Role Research
  2. CV Optimisation for ATS
  3. Application Strategy & Timeline
  4. Cover Letter & Supporting Statement
  5. CV PDF Production

What it can do on your machine

Read from SKILL.md and the folder at commit c19cefe. 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

    Ships 2 files in scripts/ (Python), which the agent can run.

    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

Application Optimiser loads about 2.8k tokens when it runs, and up to ~44k if it reads all its reference files. Until then it costs about 92 tokens; SKILL.md has 1,279 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~92
When it runs · the whole SKILL.md, loaded when a task matches
~2.8k
With references · SKILL.md plus every file in references/, read only if the agent opens them
~44k

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); the scripts in this folder are not scanned.

SKILL.md

Its licence (Custom licence) doesn't allow us to republish the file, so here is its outline and opening line. It has 1,279 words (~2,822 tokens).

“Research companies, optimise your CV for ATS systems, and plan your application strategy.”

— opening of SKILL.md by Zal4DW, Custom licence
name
application-optimiser
tags
cv, ats, resume, company, research, application, strategy

Read the full SKILL.md on GitHub

Files

SKILL.md and 18 other files (scripts, references) in career-helper/skills/application-optimiser of Zal4DW/career-helper.

  • SKILL.md
  • references/ATS-Helper.md
  • references/application-strategy-template.md
  • references/career-returner-cv-guide.md
  • references/company-research.md
  • references/cover-letter-template.md
  • references/cover-letter.md
  • references/cv-pdf-production.md
  • references/cv-template.md
  • references/deep-research-reflection.md
  • references/early-career-cv-template.md
  • references/fractional-cv-template.md
  • references/master-facts-template.md
  • references/ned-cv-template.md
  • references/reflect-validate.md
  • references/research-brief-template.md
  • references/verified-content-guardrails.md
  • scripts/generate_cv_pdf.py
  • scripts/verify_cv_pdf.py

Open the folder on GitHubat commit c19cefe

Compare with similar skills

Application Optimiser 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.

Application Optimiser compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Application Optimiser this skillZal4DW/career-helper110—~2.8kAutomated safety check: PassCustom licence
Resume BuilderStoneLL1/resume-builder109—~862Automated safety check: PassMIT
Tailor Resumeandrew-shwetzer/career-ops-plugin-do-not-fork-currently-updating-v2-501—~1.2kAutomated safety check: PassMIT
Resume Skillyanliudesign/offer-toolkit-skill520—~1.1kAutomated safety check: PassMIT
Resume Optimizersundial-org/awesome-openclaw-skills663—~1.2kAutomated safety check: PassNone
Ectheory Submissionfranklee16/academic-research-skills2231 repos~1.2kAutomated safety check: PassNone

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Questions about Application Optimiser

What does Application Optimiser do?

A skill your agent uses when the user is applying for a specific role and wants help with the application itself, such as tailoring or fixing a CV for ATS, researching the company and role, planning…. Application Optimiser is an agent skill from Zal4DW/career-helper. Use when the user is applying for a specific role and wants help with the application itself, such as tailoring or fixing a CV for ATS, researching the company and role, planning the application, writing a cover letter or supporting statement, or producing an upload-ready CV PDF.

When should I use Application Optimiser?

Application Optimiser fits situations like: the user is applying for a specific role and wants help with the application itself; such as tailoring; fixing a CV for ATS; researching the company and role.

How do I install Application Optimiser in Claude Code?

Run `npx skills add Zal4DW/career-helper --skill application-optimiser -a claude-code`. Or copy the skill folder (career-helper/skills/application-optimiser in Zal4DW/career-helper) into .claude/skills/application-optimiser in your project. Claude Code loads it when a task matches its description.

How do I install Application Optimiser in Codex?

Run `npx skills add Zal4DW/career-helper --skill application-optimiser -a codex`. Or copy the skill folder (career-helper/skills/application-optimiser in Zal4DW/career-helper) into .agents/skills/application-optimiser in your project. Codex loads it when a task matches its description.

Can I use Application Optimiser 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 Zal4DW/career-helper --skill application-optimiser -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/application-optimiser, .gemini/skills/application-optimiser, .github/skills/application-optimiser and .opencode/skills/application-optimiser in your project.

What does Application Optimiser need to run?

Going by SKILL.md and its folder, Application Optimiser needs Python for the scripts in its folder. Our summary lists: Python 3.

Does Application Optimiser 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 Application Optimiser 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. The check reads SKILL.md only: the scripts in the folder are not scanned, so read them before running anything.

What licence does Application Optimiser use?

Application Optimiser has a licence file (the repository's licence) that doesn't match a standard licence. Read it on GitHub before reusing the skill.

How many tokens does Application Optimiser use?

About 2.8k tokens (SKILL.md is roughly 11k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 42k tokens, read only when the agent opens those files.

What are the alternatives to Application Optimiser?

Skills that share tags, products or a category with Application Optimiser: Resume Builder (StoneLL1/resume-builder, 109 stars), Tailor Resume (andrew-shwetzer/career-ops-plugin-do-not-fork-currently-updating-v2-, 501 stars), Resume Skill (yanliudesign/offer-toolkit-skill, 520 stars) and Resume Optimizer (sundial-org/awesome-openclaw-skills, 663 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Application Optimiser?

Zal4DW (a GitHub user) maintains it in Zal4DW/career-helper, which has 110 GitHub stars. The repository holds 16 skills in this directory. The repository was last updated on September 29, 2026.

Source: Zal4DW/career-helper on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.