cover-letter-builder

cover-letter-builder is a skill for Claude Code from widnyana/eyay-toolkits. It costs 147 tokens per session (3,246 once invoked), scanned A, original, MIT.

A guide for writing a job-specific cover letter from a CV or resume and a complete job posting. It can use documents such as PDF, text, Markdown, or LaTeX files and can adapt the letter to the application channel.

In plain words
What is it for?
Preparing tailored cover letters for job applications, including applications sent through LinkedIn. It also helps gather the job details and background material needed to write one.
Why use it?
It removes the need to start a letter from a blank page or manually match every application to the job description. If the required background information is missing, it asks for it or checks the current project folder.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin. Also seen: mentions CLAUDE.md.

Part of the career-tools plugin — 2 skills shipped together

Good fit Preparing tailored cover letters for job applications, including applications sent through LinkedIn. It also helps gather the job details and background material needed to write one.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/widnyana/eyay-toolkits/cover-letter-builder
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 widnyana/eyay-toolkits --skill cover-letter-builder
Clone the repo
git clone --depth 1 https://github.com/widnyana/eyay-toolkits

Made for: Claude Code.

Or install career-tools, the plugin that ships this one along with the rest of its 2 skills.

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 cover-letter-builder

README.md
[![agentmods](https://agentmods.dev/badge/skills/widnyana/eyay-toolkits/cover-letter-builder/github.svg)](https://agentmods.dev/skills/widnyana/eyay-toolkits/cover-letter-builder)
Your own site
<a href="https://agentmods.dev/skills/widnyana/eyay-toolkits/cover-letter-builder"><img src="https://agentmods.dev/badge/skills/widnyana/eyay-toolkits/cover-letter-builder/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 cover-letter-builder

Your own site · 80×15
<a href="https://agentmods.dev/skills/widnyana/eyay-toolkits/cover-letter-builder"><img src="https://agentmods.dev/badge/skills/widnyana/eyay-toolkits/cover-letter-builder.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 147 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,246 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
  • 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 $0.00147 $0.03246
Opus 5 $0.00073 $0.01623
Sonnet 5 $0.00029 $0.00649
Haiku 4.5 $0.00015 $0.00325

Measured 12d ago against content hash c934de88b659, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

cover-letter-builder 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 12d 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.

plugins/career-tools/skills/cover-letter-builder/SKILL.md · 336 lines

How it starts

The opening of the file, as written. The whole thing — 336 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Cover Letter Builder

Inputs

Field Source
Job title User message or job posting
Company name User message or job posting
Job description Pasted text, or file path to a .pdf / .txt
CV / resume File path (.pdf, .md, .tex, .txt) or pasted text — asked in Step 0 if not provided
Application channel Default: standard; options: linkedin
Repo path Default: current working directory (.)

If any required field is missing and cannot be inferred, ask once — all at once.


Step 0: Intake

Run this before scanning the repo.

Has the user already provided a CV, resume, or background text?
  YES → proceed to Step 1 with that as the primary source
  NO  → ask the user (single message):

"Do you have an existing CV or resume? If yes, provide the file path or paste the text here. If not, I'll scan the current repo for your background."

Also confirm the job description is complete. If the user only provided a job title and company name, ask for the full JD now.

If the user has no CV and the repo scan (Step 1) finds nothing useful: switch to inline intake — ask these questions in one message:

  • Current role and company
  • 2-3 most relevant past roles (title, company, one key outcome each)
  • Top 5-6 skills most relevant to the target role
  • Education (brief)

Use the answers as the profile source.


Step 1: Scan Sources

If the user provided a CV file (Step 0)

Use it as the primary source. Extract text based on format:

PDF:

# Best layout preservation (poppler-utils)
pdftotext -layout cv.pdf -

Fallback chain:

  1. pdftotext -layout file.pdf -
  2. pdftotext file.pdf -
  3. If pdftotext is unavailable: tell the user and ask them to paste the CV text

Markdown / plain text: read directly — no transformation needed.

LaTeX: strip commands, extract readable text:

sed 's/\\[a-zA-Z]*{[^}]*}//g; s/\\[a-zA-Z]*//g; s/[{}]//g'

Or pandoc -t plain file.tex if available.

Read the full file on GitHub · 336 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. 12d ago First seen · 336 lines · 147 tokens per session scan A c934de88b659

Subscribe to this mod's changes

cover-letter-builder is a skill published in the GitHub repository widnyana/eyay-toolkits (7 stars, last pushed 9d ago), licensed MIT. It adds 147 tokens to every session and 3,246 once invoked, about $0.0007 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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