Agent skill

Copy Style Guide

by canonical in canonical/canonical.com

Canonical copy style guide covering brand voice/tone, US spelling, capitalization, product naming conventions (Ubuntu Pro, Ubuntu Core, etc.), inclusive language, punctuation, and words/phrases to…

Custom licenceAuto-check passedWriting & Content

Install Copy Style Guide

skills CLI
$ npx skills add canonical/canonical.com --skill copy-style-guide -a claude-code

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

GitHub CLI
$ gh skill install canonical/canonical.com copy-style-guide --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/canonical/canonical.com.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.github/skills/copy-style-guide .claude/skills/copy-style-guide && 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
copy-style-guide
GitHub stars
152
Token cost
~8.4k tokens
SKILL.md length
4,711 words
Files
1
Skills in repo
3
Repo updated
First seen
Licence
Custom licence

At a glance

Canonical copy style guide covering brand voice/tone, US spelling, capitalization, product naming conventions (Ubuntu Pro, Ubuntu Core, etc.), inclusive language, punctuation, and words/phrases to…

  • Reviewing any user-facing copy on ubuntu.com
  • SKILL.md covers About this guide, Overview, Writing about Canonical and… and Brand voice, plus 8 more sections
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
  • Canonical.com - page text

What it does

Copy Style Guide is an agent skill from canonical/canonical.com. Canonical copy style guide covering brand voice/tone, US spelling, capitalization, product naming conventions (Ubuntu Pro, Ubuntu Core, etc.), inclusive language, punctuation, and words/phrases to avoid. Use whenever writing, editing, or reviewing any user-facing copy on ubuntu.com or canonical.com - page text, headings, CTAs, blog posts, alt text, form labels - to check tone and wording match Canonical's voice and naming conventions.

Its SKILL.md is about 8.4k 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 Brand voice and tone and Blog and article writing. The repository describes itself as: Repository for the new version of canonical.com.

When your agent uses it

  • Reviewing any user-facing copy on ubuntu.com
  • Canonical.com - page text
  • Form labels - to check tone and wording match Canonicals voice and naming conventions

Example prompts

  • “/copy-style-guide”

What it can do on your machine

Read from SKILL.md and the folder at commit f91943c. 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

    No scripts in the folder and no shell commands in SKILL.md (its code samples are python).

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

  • Network

    Links to these hosts (documentation or services it may open):

    • docs.google.com
    • documentation.ubuntu.com
    • snapcraft.io
    • en.wikipedia.org

    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

Copy Style Guide loads about 8.4k tokens when it runs. Until then it costs about 114 tokens; SKILL.md has 4,711 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~114
When it runs · the whole SKILL.md, loaded when a task matches
~8.4k

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 4,711 words (~8,366 tokens).

“This is the Canonical copy style guide — the source of truth for voice, tone, grammar, formatting, and naming conventions used across all Canonical communications.”

— opening of SKILL.md by canonical, Custom licence
name
copy-style-guide

Read the full SKILL.md on GitHub

Files

Just SKILL.md in .github/skills/copy-style-guide of canonical/canonical.com.

Open the folder on GitHubat commit f91943c

Compare with similar skills

Copy Style Guide 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.

Copy Style Guide compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Copy Style Guide this skillcanonical/canonical.com152—~8.4kAutomated safety check: PassCustom licence
Khazix WeChat Article WriterKKKKhazix/khazix-skills21k1 repos~2.9kAutomated safety check: PassMIT
Brand Voice Content Creatordavila7/claude-code-templates32k3 repos~1.9kAutomated safety check: PassMIT
Voice Buildercharlie947/social-media-skills3.8k—~3.3kAutomated safety check: PassMIT
Xe Writing StyleXe/x337—~2.2kAutomated safety check: PassCC0-1.0
Content CreatoraAAaqwq/AGI-Super-Team1053 repos~1.9kAutomated safety check: PassMIT

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Questions about Copy Style Guide

What does Copy Style Guide do?

Canonical copy style guide covering brand voice/tone, US spelling, capitalization, product naming conventions (Ubuntu Pro, Ubuntu Core, etc.), inclusive language, punctuation, and words/phrases to…. com.), inclusive language, punctuation, and words/phrases to avoid.

When should I use Copy Style Guide?

Copy Style Guide fits situations like: reviewing any user-facing copy on ubuntu.com; canonical.com - page text; form labels - to check tone and wording match Canonicals voice and naming conventions.

How do I install Copy Style Guide in Claude Code?

Run `npx skills add canonical/canonical.com --skill copy-style-guide -a claude-code`. Or copy the skill folder (.github/skills/copy-style-guide in canonical/canonical.com) into .claude/skills/copy-style-guide in your project. Claude Code loads it when a task matches its description.

How do I install Copy Style Guide in Codex?

Run `npx skills add canonical/canonical.com --skill copy-style-guide -a codex`. Or copy the skill folder (.github/skills/copy-style-guide in canonical/canonical.com) into .agents/skills/copy-style-guide in your project. Codex loads it when a task matches its description.

Can I use Copy Style Guide 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 canonical/canonical.com --skill copy-style-guide -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/copy-style-guide, .gemini/skills/copy-style-guide, .github/skills/copy-style-guide and .opencode/skills/copy-style-guide in your project.

What does Copy Style Guide need to run?

SKILL.md names no scripts, command-line tools or credentials: Copy Style Guide is instructions for the agent only.

Does Copy Style Guide access the network?

SKILL.md names 4 domains. As links in the text: docs.google.com, documentation.ubuntu.com, snapcraft.io and en.wikipedia.org. This is read from the text; nothing was executed.

Is Copy Style Guide 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 Copy Style Guide use?

Copy Style Guide 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 Copy Style Guide use?

About 8.4k tokens (SKILL.md is roughly 33k 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 Copy Style Guide?

Skills that share tags, products or a category with Copy Style Guide: Khazix WeChat Article Writer (KKKKhazix/khazix-skills, 21k stars), Brand Voice Content Creator (davila7/claude-code-templates, 32k stars), Voice Builder (charlie947/social-media-skills, 3.8k stars) and Xe Writing Style (Xe/x, 337 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Copy Style Guide?

canonical (a GitHub organization) maintains it in canonical/canonical.com, which has 152 GitHub stars. The repository holds 3 skills in this directory. The repository was last updated on October 9, 2026.

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