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Agent skill

Gitignore

by wcygan in wcygan/dotfiles

Audit or update a repository .gitignore from tracked, untracked, generated, and sensitive files.

No licenceAuto-check: warningsAgent Workflows

Install Gitignore

The automated check flagged lines worth reading first. See the safety section below.

skills CLI
$ npx skills add wcygan/dotfiles --skill gitignore -a claude-code

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

GitHub CLI
$ gh skill install wcygan/dotfiles gitignore --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/wcygan/dotfiles.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.agents/skills/gitignore .claude/skills/gitignore && 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
gitignore
GitHub stars
196
Token cost
~1k tokens
SKILL.md length
364 words
Files
1
Skills in repo
19
Repo updated
First seen
Licence
None found

At a glance

Audit or update a repository .gitignore from tracked, untracked, generated, and sensitive files.

  • Works in 4 steps: Check whether proposed patterns would… → Identify already-tracked files that… → Preserve project-specific exceptions. → …
  • Gitignore cleanup
  • SKILL.md covers Goal, Modes, Gather Context and Classify Files, plus 3 more sections
  • Calls git

What it does

Gitignore is an agent skill from wcygan/dotfiles. Audit or update a repository .gitignore from tracked, untracked, generated, and sensitive files. Use for gitignore cleanup, ignore pattern design, and accidental-tracking checks.

Its SKILL.md is about 1k tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

It sits in Agent Workflows. The repository describes itself as: Configuration for Development Environments.

When your agent uses it

  • Gitignore cleanup
  • Ignore pattern design
  • Accidental-tracking checks

Example prompts

  • “/gitignore”

Workflow steps

4 steps, taken from the first numbered list in SKILL.md.

  1. Check whether proposed patterns would match source, docs, tests, or tracked config.
  2. Identify already-tracked files that should be untracked separately with git rm --cached.
  3. Preserve project-specific exceptions.
  4. Keep the change scoped to .gitignore unless the user requests cleanup.

What it can do on your machine

Read from SKILL.md and the folder at commit a9f60e7. 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

    Shell commands in SKILL.md call:

    • git

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    No URLs in SKILL.md. Its commands use git, which can reach the network depending on how they are called.

    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

Gitignore loads about 1k tokens when it runs. Until then it costs about 47 tokens; SKILL.md has 364 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~47
When it runs · the whole SKILL.md, loaded when a task matches
~1k

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: warnings

The automated check found patterns that need a careful read before installing.

  • NoteMentions a .env fileSKILL.md:42
    - `.env`, `.env.*`
  • WarningMentions a credentials file (SSH keys, cloud or package-manager tokens)SKILL.md:47
    - `.netrc` or `.npmrc` when they contain tokens
  • NoteMentions a .env fileSKILL.md:106
    .env
  • NoteMentions a .env fileSKILL.md:107
    .env.*

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); files beside SKILL.md are not scanned.

SKILL.md

Without a licence we can't republish the file, so here is its outline and opening line. It has 364 words (~1,008 tokens).

“Analyze repository state and create or update .gitignore with clear, safe patterns.”

— opening of SKILL.md by wcygan
name
gitignore

Read the full SKILL.md on GitHub

Files

Just SKILL.md in .agents/skills/gitignore of wcygan/dotfiles.

Open the folder on GitHubat commit a9f60e7

Compare with similar skills

Gitignore 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.

Gitignore compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Gitignore this skillwcygan/dotfiles196—~1kAutomated safety check: WarnNone
MCP Server Builderanthropics/skills180k64 repos~2.3kAutomated safety check: PassApache-2.0
Hook Development for Claude Code Pluginsanthropics/claude-plugins-official38k11 repos~4.1kAutomated safety check: NotesApache-2.0
Using Superpowersfarm-fe/farm5.6k35 repos~1.4kAutomated safety check: PassMIT
Executing Plans Inlineobra/superpowers296k2 repos~5.1kAutomated safety check: PassMIT
Claude Code Agent Developmentanthropics/claude-plugins-official38k8 repos~2.8kAutomated safety check: PassApache-2.0

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    180k GitHub starsUsed in 64 repos~2.3k tokens
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  • Hook Development for Claude Code Plugins

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    Explains how to write Claude Code plugin hooks, both prompt-based checks and bash commands, for events such as PreToolUse, Stop and SessionStart.

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Categories

Questions about Gitignore

What does Gitignore do?

Audit or update a repository .gitignore from tracked, untracked, generated, and sensitive files. Gitignore is an agent skill from wcygan/dotfiles.gitignore from tracked, untracked, generated, and sensitive files.

When should I use Gitignore?

Gitignore fits situations like: gitignore cleanup; ignore pattern design; accidental-tracking checks.

How do I install Gitignore in Claude Code?

Run `npx skills add wcygan/dotfiles --skill gitignore -a claude-code`. Or copy the skill folder (.agents/skills/gitignore in wcygan/dotfiles) into .claude/skills/gitignore in your project. Claude Code loads it when a task matches its description.

How do I install Gitignore in Codex?

Run `npx skills add wcygan/dotfiles --skill gitignore -a codex`. Or copy the skill folder (.agents/skills/gitignore in wcygan/dotfiles) into .agents/skills/gitignore in your project. Codex loads it when a task matches its description.

Can I use Gitignore 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 wcygan/dotfiles --skill gitignore -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/gitignore, .gemini/skills/gitignore, .github/skills/gitignore and .opencode/skills/gitignore in your project.

What does Gitignore need to run?

Going by SKILL.md and its folder, Gitignore needs the command-line tools its instructions call (git).

Does Gitignore access the network?

SKILL.md contains no URLs. Its commands use git, which can reach the network depending on how they are called. This is read from the text; nothing was executed.

Is Gitignore safe to install?

Our automated static check of SKILL.md flagged 1 warning(s): mentions a credentials file (ssh keys, cloud or package-manager tokens). Read the flagged lines before installing; the check is not a guarantee either way.

What licence does Gitignore use?

No licence was found for Gitignore or its repository. Without one, default copyright applies: ask the author before reusing or redistributing it.

How many tokens does Gitignore use?

About 1k tokens (SKILL.md is roughly 4k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Gitignore?

Skills that share tags, products or a category with Gitignore: MCP Server Builder (anthropics/skills, 180k stars), Hook Development for Claude Code Plugins (anthropics/claude-plugins-official, 38k stars), Using Superpowers (farm-fe/farm, 5.6k stars) and Executing Plans Inline (obra/superpowers, 296k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Gitignore?

wcygan (a GitHub user) maintains it in wcygan/dotfiles, which has 196 GitHub stars. The repository holds 19 skills in this directory. The repository was last updated on October 8, 2026.

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