Agent skill

Create Library

by barefootford in barefootford/buttercut

Create a new ButterCut library. An agent skill from barefootford/buttercut.

Custom licenceAuto-check passedWriting & Content

Install Create Library

skills CLI
$ npx skills add barefootford/buttercut --skill create-library -a claude-code

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

GitHub CLI
$ gh skill install barefootford/buttercut create-library --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/barefootford/buttercut.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/create-library .claude/skills/create-library && 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
create-library
GitHub stars
601
Token cost
~1.3k tokens
SKILL.md length
604 words
Files
1
Skills in repo
15
Repo updated
First seen
Licence
Custom licence

At a glance

Create a new ButterCut library. An agent skill from barefootford/buttercut.

  • Works in 4 steps: Initialize settings (one-time) → Gather project information → Create the library → …
  • The user wants to start a new library
  • SKILL.md covers Step 1 — Initialize settings…, Step 2 — Gather project…, Step 3 — Create the library and Step 4 — Hand off to…, plus 1 more section
  • Calls ruby

What it does

Create Library is an agent skill from barefootford/buttercut. Create a new ButterCut library. Gather library info (name, footage location, language, transcript proofreading) and scaffold the library. Use when the user wants to start a new library. Libraries are containers of footage and footage analysis (transcripts, contact sheets, etc). User's may also refer to Libraries as "projects" or similiar. Ask them to confirm if they want a new Library (footage container) or just a new cut (roughcut, select, etc) if unsure.

Its SKILL.md is about 1.3k 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 Writing & Content, covering Copy editing and proofreading. The repository describes itself as: Edit Video with Claude Code.

When your agent uses it

  • The user wants to start a new library
  • Tasks that involve Copy editing and proofreading

Example prompts

  • “s may also refer to Libraries as”
  • “/create-library”

Workflow steps

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

  1. Initialize settings (one-time)
  2. Gather project information
  3. Create the library
  4. Hand off to process-library

What it can do on your machine

Read from SKILL.md and the folder at commit 352c1e0. 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:

    • ruby

    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

Create Library loads about 1.3k tokens when it runs. Until then it costs about 120 tokens; SKILL.md has 604 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~120
When it runs · the whole SKILL.md, loaded when a task matches
~1.3k

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); files beside SKILL.md 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 604 words (~1,314 tokens).

“This skill is performed in the main thread.”

— opening of SKILL.md by barefootford, Custom licence
name
create-library

Read the full SKILL.md on GitHub

Files

Just SKILL.md in skills/create-library of barefootford/buttercut.

Open the folder on GitHubat commit 352c1e0

Compare with similar skills

Create Library 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.

Create Library compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Create Library this skillbarefootford/buttercut601—~1.3kAutomated safety check: PassCustom licence
Line Editingdanjdewhurst/story-skills2791 repos~3.1kAutomated safety check: NotesMIT
User-Facing Text Cleanupguillaumemeyer/watermarks-remover24k—~3.5kAutomated safety check: PassMIT
Story Multi-Perspective Reviewzenstory-ai/oh-story-claudecode7.4k3 repos~3kAutomated safety check: PassMIT
Chinese Text Humanizerop7418/Humanizer-zh19k—~2kAutomated safety check: PassMIT
Korean AI-Text Humanizerepoko77-ai/im-not-ai5.9k1 repos~4.5kAutomated safety check: PassMIT

Similar skills

  • Line Editing

    danjdewhurst/story-skills

    This skill should be used when the user asks to "line edit", "edit my prose", "polish this chapter", "tighten the prose", "improve the sentences", "copyedit", "proofread", "proof pass", "check…

    279 GitHub starsUsed in 1 repo~3.1k tokens
    Writing & ContentAuto-check: notes
  • User-Facing Text Cleanup

    guillaumemeyer/watermarks-remover

    Audits prose for invisible Unicode characters and rewrites it while keeping facts, citations, code and required disclosures unchanged and the writer's voice intact.

    24k GitHub stars~3.5k tokensUpdated 2 days ago
    Writing & ContentAuto-check passed
  • Story Multi-Perspective Review

    zenstory-ai/oh-story-claudecode

    Reviews Chinese web-novel text with several reviewer agents in parallel, falling back to a single-agent pass, and reports structure, character, prose and setting problems with fixes.

    7.4k GitHub starsUsed in 3 repos~3k tokens
    Writing & ContentAuto-check passed
  • Chinese Text Humanizer

    op7418/Humanizer-zh

    Edits Chinese articles, comments and documents to remove filler, repetition and template phrasing while keeping the facts, the level of certainty and the author's voice.

    19k GitHub stars~2k tokensUpdated 15 days ago
    Writing & ContentAuto-check passed
  • Korean AI-Text Humanizer

    epoko77-ai/im-not-ai

    Rewrites Korean text written by AI so it reads like a human wrote it, detecting translationese and other AI patterns while leaving the content untouched.

    5.9k GitHub starsUsed in 1 repo~4.5k tokens
    Writing & ContentAuto-check passed
  • Writes and edits Japanese business documents so they read clearly and naturally, removes AI-sounding phrasing and can score how AI-like a text reads.

    1.9k GitHub stars~2.1k tokensUpdated 1 mo ago
    Writing & ContentAuto-check passed

More from barefootford/buttercut

All 15 skills in this repo
  • Analyze Video

    barefootford/buttercut

    Internal sub-procedure (not a standalone entry point) — the shared footage-analysis pipeline that produces audio transcripts, contact sheets, and Sonnet-written summaries.

    601 GitHub stars~3.2k tokensUpdated 15 days ago
    Auto-check passed
  • Contact Sheet

    barefootford/buttercut

    Builds a contact sheet from a video clip — evenly spaced frames laid out in a single grid image, each with its hh:mm:ss timestamp burned in.

    601 GitHub stars~682 tokensUpdated 15 days ago
    Auto-check passed
  • Cut

    barefootford/buttercut

    Build a cut from a library — scene, selects, roughcut, custom task, or an edit from a written script.

    601 GitHub stars~2.6k tokensUpdated 15 days ago
    Auto-check passed
  • Process Library

    barefootford/buttercut

    Process the footage in a library — run analysis (transcripts, contact sheets, summaries) on a new library, resume processing on an existing one, or add and analyze new footage.

    601 GitHub stars~1.4k tokensUpdated 15 days ago
    Auto-check passed
  • Report Bug

    barefootford/buttercut

    Report a ButterCut bug to the people who build it. An agent skill from barefootford/buttercut.

    601 GitHub stars~1.2k tokensUpdated 15 days ago
    Auto-check passed
  • Reprocess With Contact Sheets

    barefootford/buttercut

    Reset a library's visual analysis (contact sheets, summaries, legacy visualtranscripts) and re-run the current analyze-video pipeline on it.

    601 GitHub stars~694 tokensUpdated 15 days ago
    Auto-check passed

Questions about Create Library

What does Create Library do?

Create a new ButterCut library. An agent skill from barefootford/buttercut. Create Library is an agent skill from barefootford/buttercut. Create a new ButterCut library.

When should I use Create Library?

Create Library fits situations like: the user wants to start a new library; tasks that involve Copy editing and proofreading.

How do I install Create Library in Claude Code?

Run `npx skills add barefootford/buttercut --skill create-library -a claude-code`. Or copy the skill folder (skills/create-library in barefootford/buttercut) into .claude/skills/create-library in your project. Claude Code loads it when a task matches its description.

How do I install Create Library in Codex?

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

Can I use Create Library 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 barefootford/buttercut --skill create-library -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/create-library, .gemini/skills/create-library, .github/skills/create-library and .opencode/skills/create-library in your project.

What does Create Library need to run?

Going by SKILL.md and its folder, Create Library needs the command-line tools its instructions call (ruby).

Does Create Library 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 Create Library 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. Review the folder before installing.

What licence does Create Library use?

Create Library 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 Create Library use?

About 1.3k tokens (SKILL.md is roughly 5.3k 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 Create Library?

Skills that share tags, products or a category with Create Library: Line Editing (danjdewhurst/story-skills, 279 stars), User-Facing Text Cleanup (guillaumemeyer/watermarks-remover, 24k stars), Story Multi-Perspective Review (zenstory-ai/oh-story-claudecode, 7.4k stars) and Chinese Text Humanizer (op7418/Humanizer-zh, 19k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Create Library?

barefootford (a GitHub user) maintains it in barefootford/buttercut, which has 601 GitHub stars. The repository holds 15 skills in this directory. The repository was last updated on September 23, 2026.

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