Diagram Design
cathrynlavery/diagram-design
Creates branded diagrams, from architecture, flowchart and sequence to charts and maps, as self-contained HTML with inline SVG, with import from draw.io, Mermaid and Excalidraw.
In-code documentation, folder READMEs, code comments. An agent skill from EpicenterHQ/epicenter.
Install Documentation
$ npx skills add EpicenterHQ/epicenter --skill documentation -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install EpicenterHQ/epicenter documentation --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/EpicenterHQ/epicenter.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.agents/skills/documentation .claude/skills/documentation && rm -rf skills-srcUse ~/.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/
Install the "documentation" agent skill from https://github.com/EpicenterHQ/epicenter/tree/main/.agents/skills/documentation into .claude/skills/documentation/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "documentation", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/EpicenterHQ/epicenter/tree/main/.agents/skills/documentationType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add EpicenterHQ/epicenter --skill documentation -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install EpicenterHQ/epicenter documentation --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/EpicenterHQ/epicenter.git skills-src && mkdir -p .agents/skills && cp -r skills-src/.agents/skills/documentation .agents/skills/documentation && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "documentation" agent skill from https://github.com/EpicenterHQ/epicenter/tree/main/.agents/skills/documentation into .agents/skills/documentation/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "documentation", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add EpicenterHQ/epicenter --skill documentation -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install EpicenterHQ/epicenter documentation --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/EpicenterHQ/epicenter.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/.agents/skills/documentation .cursor/skills/documentation && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "documentation" agent skill from https://github.com/EpicenterHQ/epicenter/tree/main/.agents/skills/documentation into .cursor/skills/documentation/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "documentation", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/EpicenterHQ/epicenter.git --path .agents/skills/documentation--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add EpicenterHQ/epicenter --skill documentation -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install EpicenterHQ/epicenter documentation --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/EpicenterHQ/epicenter.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/.agents/skills/documentation .gemini/skills/documentation && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "documentation" agent skill from https://github.com/EpicenterHQ/epicenter/tree/main/.agents/skills/documentation into .gemini/skills/documentation/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "documentation", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install EpicenterHQ/epicenter documentationInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add EpicenterHQ/epicenter --skill documentation -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/EpicenterHQ/epicenter.git skills-src && mkdir -p .github/skills && cp -r skills-src/.agents/skills/documentation .github/skills/documentation && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "documentation" agent skill from https://github.com/EpicenterHQ/epicenter/tree/main/.agents/skills/documentation into .github/skills/documentation/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "documentation", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add EpicenterHQ/epicenter --skill documentation -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install EpicenterHQ/epicenter documentation --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/EpicenterHQ/epicenter.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/.agents/skills/documentation .opencode/skills/documentation && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "documentation" agent skill from https://github.com/EpicenterHQ/epicenter/tree/main/.agents/skills/documentation into .opencode/skills/documentation/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "documentation", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
documentation- GitHub stars
- 4.8k
- Token cost
- ~845 tokens
- SKILL.md length
- 244 words
- Files
- 1
- Skills in repo
- 64
- Repo updated
- First seen
- Licence
- Custom licence
At a glance
In-code documentation, folder READMEs, code comments. An agent skill from EpicenterHQ/epicenter.
- : document this
- SKILL.md covers Folder READMEs, JSDoc Comments and Code Comments
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
- Explain this code
What it does
Documentation is an agent skill from EpicenterHQ/epicenter. In-code documentation, folder READMEs, code comments. Use when: "document this", "add JSDoc", "write a README", "explain this code", or writing README.md/JSDoc.
Its SKILL.md is about 850 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 Development, covering Technical documentation. The repository describes itself as: Open-source, local-first apps.
When your agent uses it
- : document this
- Explain this code
- Writing README.md/JSDoc
Example prompts
- “document this”
- “add JSDoc”
- “write a README”
- “/documentation”
What it can do on your machine
Read from SKILL.md and the folder at commit f9441c8. 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 typescript and markdown).
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
Documentation loads about 845 tokens when it runs. Until then it costs about 44 tokens; SKILL.md has 244 words of instructions outside code blocks.
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 244 words (~845 tokens).
“Follow writing-voice for tone. For architecture walkthroughs, folder mental models, or newcomer explanations, lead with the owner, boundary, or flow; ground the model in code and name the likely misconception when it helps.”
- name
- documentation
- metadata.author
- epicenter
- metadata.version
- 1.0
Files
Just SKILL.md in .agents/skills/documentation of EpicenterHQ/epicenter.
Open the folder on GitHubat commit f9441c8
Compare with similar skills
Documentation 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.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Documentation this skillEpicenterHQ/epicenter | 4.8k | — | ~845 | Automated safety check: Pass | Custom licence | |
| Diagram Designcathrynlavery/diagram-design | 44k | 1 repos | ~7.5k | Automated safety check: Pass | MIT | |
| Simple Englishmoeru-ai/airi | 50k | 2 repos | ~4.6k | Automated safety check: Pass | MIT | |
| Get API Docs with chubandrewyng/context-hub | 14k | 2 repos | ~775 | Automated safety check: Pass | MIT | |
| Doc SyncJetBrains/ideavim | 10k | 2 repos | ~2.6k | Automated safety check: Pass | MIT | |
| Mailspring App ScreenshotsFoundry376/Mailspring | 18k | — | ~1.4k | Automated safety check: Pass | GPL-3.0 |
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Get API Docs with chub
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Keeps IdeaVim documentation in sync with code changes. An agent skill from JetBrains/ideavim.
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Captures screenshots of the running Mailspring dev app for docs, PRs or visual checks by launching it with a debugging port, driving the UI and clipping to an element.
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Related
Categories
Questions about Documentation
What does Documentation do?
In-code documentation, folder READMEs, code comments. An agent skill from EpicenterHQ/epicenter. Documentation is an agent skill from EpicenterHQ/epicenter. In-code documentation, folder READMEs, code comments.
When should I use Documentation?
Documentation fits situations like: : document this; explain this code; writing README.md/JSDoc.
How do I install Documentation in Claude Code?
Run `npx skills add EpicenterHQ/epicenter --skill documentation -a claude-code`. Or copy the skill folder (.agents/skills/documentation in EpicenterHQ/epicenter) into .claude/skills/documentation in your project. Claude Code loads it when a task matches its description.
How do I install Documentation in Codex?
Run `npx skills add EpicenterHQ/epicenter --skill documentation -a codex`. Or copy the skill folder (.agents/skills/documentation in EpicenterHQ/epicenter) into .agents/skills/documentation in your project. Codex loads it when a task matches its description.
Can I use Documentation 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 EpicenterHQ/epicenter --skill documentation -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/documentation, .gemini/skills/documentation, .github/skills/documentation and .opencode/skills/documentation in your project.
What does Documentation need to run?
SKILL.md names no scripts, command-line tools or credentials: Documentation is instructions for the agent only.
Does Documentation 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 Documentation 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 Documentation use?
Documentation 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 Documentation use?
About 845 tokens (SKILL.md is roughly 3.4k 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 Documentation?
Skills that share tags, products or a category with Documentation: Diagram Design (cathrynlavery/diagram-design, 44k stars), Simple English (moeru-ai/airi, 50k stars), Get API Docs with chub (andrewyng/context-hub, 14k stars) and Doc Sync (JetBrains/ideavim, 10k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Documentation?
EpicenterHQ (a GitHub organization) maintains it in EpicenterHQ/epicenter, which has 4,818 GitHub stars. The repository holds 64 skills in this directory. The repository was last updated on October 7, 2026.
Source: EpicenterHQ/epicenter on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.