Using Agent Skills
addyosmani/agent-skills
Meta-skill for choosing which workflow skill fits the task at hand, plus always-on habits: surface assumptions, stop on confusion, push back, keep it simple and stay in scope.
A skill your agent uses when creating or updating CLAUDE.md files for projects or subdirectories - covers top-level vs domain-level organization, capturing architectural intent and contracts, and…
Install Writing Claude Md Files
$ npx skills add ed3dai/ed3d-plugins --skill writing-claude-md-files -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install ed3dai/ed3d-plugins writing-claude-md-files --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/ed3dai/ed3d-plugins.git skills-src && mkdir -p .claude/skills && cp -r skills-src/plugins/ed3d-extending-claude/skills/writing-claude-md-files .claude/skills/writing-claude-md-files && 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 "writing-claude-md-files" agent skill from https://github.com/ed3dai/ed3d-plugins/tree/main/plugins/ed3d-extending-claude/skills/writing-claude-md-files into .claude/skills/writing-claude-md-files/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "writing-claude-md-files", 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/ed3dai/ed3d-plugins/tree/main/plugins/ed3d-extending-claude/skills/writing-claude-md-filesType 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 ed3dai/ed3d-plugins --skill writing-claude-md-files -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install ed3dai/ed3d-plugins writing-claude-md-files --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/ed3dai/ed3d-plugins.git skills-src && mkdir -p .agents/skills && cp -r skills-src/plugins/ed3d-extending-claude/skills/writing-claude-md-files .agents/skills/writing-claude-md-files && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "writing-claude-md-files" agent skill from https://github.com/ed3dai/ed3d-plugins/tree/main/plugins/ed3d-extending-claude/skills/writing-claude-md-files into .agents/skills/writing-claude-md-files/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "writing-claude-md-files", 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 ed3dai/ed3d-plugins --skill writing-claude-md-files -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install ed3dai/ed3d-plugins writing-claude-md-files --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/ed3dai/ed3d-plugins.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/plugins/ed3d-extending-claude/skills/writing-claude-md-files .cursor/skills/writing-claude-md-files && 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 "writing-claude-md-files" agent skill from https://github.com/ed3dai/ed3d-plugins/tree/main/plugins/ed3d-extending-claude/skills/writing-claude-md-files into .cursor/skills/writing-claude-md-files/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "writing-claude-md-files", 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/ed3dai/ed3d-plugins.git --path plugins/ed3d-extending-claude/skills/writing-claude-md-files--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 ed3dai/ed3d-plugins --skill writing-claude-md-files -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install ed3dai/ed3d-plugins writing-claude-md-files --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/ed3dai/ed3d-plugins.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/plugins/ed3d-extending-claude/skills/writing-claude-md-files .gemini/skills/writing-claude-md-files && 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 "writing-claude-md-files" agent skill from https://github.com/ed3dai/ed3d-plugins/tree/main/plugins/ed3d-extending-claude/skills/writing-claude-md-files into .gemini/skills/writing-claude-md-files/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "writing-claude-md-files", 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 ed3dai/ed3d-plugins writing-claude-md-filesInstalls 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 ed3dai/ed3d-plugins --skill writing-claude-md-files -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/ed3dai/ed3d-plugins.git skills-src && mkdir -p .github/skills && cp -r skills-src/plugins/ed3d-extending-claude/skills/writing-claude-md-files .github/skills/writing-claude-md-files && 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 "writing-claude-md-files" agent skill from https://github.com/ed3dai/ed3d-plugins/tree/main/plugins/ed3d-extending-claude/skills/writing-claude-md-files into .github/skills/writing-claude-md-files/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "writing-claude-md-files", 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 ed3dai/ed3d-plugins --skill writing-claude-md-files -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install ed3dai/ed3d-plugins writing-claude-md-files --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/ed3dai/ed3d-plugins.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/plugins/ed3d-extending-claude/skills/writing-claude-md-files .opencode/skills/writing-claude-md-files && 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 "writing-claude-md-files" agent skill from https://github.com/ed3dai/ed3d-plugins/tree/main/plugins/ed3d-extending-claude/skills/writing-claude-md-files into .opencode/skills/writing-claude-md-files/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "writing-claude-md-files", 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
writing-claude-md-files- GitHub stars
- 250
- Token cost
- ~2k tokens
- SKILL.md length
- 545 words
- Files
- 1
- Skills in repo
- 34
- Repo updated
- First seen
- Licence
- None found
At a glance
A skill your agent uses when creating or updating CLAUDE.md files for projects or subdirectories - covers top-level vs domain-level organization, capturing architectural intent and contracts, and…
- Works in 4 steps: Update the freshness date using Bash… → Verify contracts still hold - read the… → Remove stale content - better short and… → …
- Updating CLAUDE.md files for projects
- SKILL.md covers Core Principle, File Hierarchy, Top-Level CLAUDE.md and Subdirectory CLAUDE.md…, plus 7 more sections
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
What it does
Writing Claude Md Files is an agent skill from ed3dai/ed3d-plugins. Use when creating or updating CLAUDE.md files for projects or subdirectories - covers top-level vs domain-level organization, capturing architectural intent and contracts, and mandatory freshness dates
Its SKILL.md is about 2k 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, covering Agent instruction files. The repository describes itself as: Ed's repo of Claude Code plugins, centered around a research-plan-implement workflow. Only a tiny bit cursed. If you're lucky.
When your agent uses it
- Updating CLAUDE.md files for projects
- Subdirectories - covers top-level vs domain-level organization
- Capturing architectural intent and contracts
- Mandatory freshness dates
Example prompts
- “/writing-claude-md-files”
Workflow steps
4 steps, taken from the first numbered list in SKILL.md.
- Update the freshness date using Bash date +%Y-%m-%d
- Verify contracts still hold - read the code, check invariants
- Remove stale content - better short and accurate than long and wrong
- Keep token-efficient - <300 lines top-level, <100 lines subdirectory
What it can do on your machine
Read from SKILL.md and the folder at commit 0c90f4b. 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 markdown and bash).
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
Writing Claude Md Files loads about 2k tokens when it runs. Until then it costs about 56 tokens; SKILL.md has 545 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
Without a licence we can't republish the file, so here is its outline and opening line. It has 545 words (~2,029 tokens).
“REQUIRED BACKGROUND: Read ed3d-extending-claude:writing-claude-directives for foundational guidance on token efficiency, compliance techniques, and directive structure.”
- name
- writing-claude-md-files
- user-invocable
- false
Files
Just SKILL.md in plugins/ed3d-extending-claude/skills/writing-claude-md-files of ed3dai/ed3d-plugins.
Open the folder on GitHubat commit 0c90f4b
Compare with similar skills
Writing Claude Md Files 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 |
|---|---|---|---|---|---|---|
| Writing Claude Md Files this skilled3dai/ed3d-plugins | 250 | — | ~2k | Automated safety check: Pass | None | |
| Using Agent Skillsaddyosmani/agent-skills | 105k | 4 repos | ~2.4k | Automated safety check: Pass | MIT | |
| Claude ReflectBayramAnnakov/claude-reflect | 1.8k | 2 repos | ~627 | Automated safety check: Pass | MIT | |
| Writing For Agentsbestofjs/bestofjs | 3.1k | 20 repos | ~2.7k | Automated safety check: Pass | MIT | |
| Neat-Freak Knowledge CloseoutKKKKhazix/khazix-skills | 21k | — | ~1.9k | Automated safety check: Pass | MIT | |
| Task Observerrebelytics/one-skill-to-rule-them-all | 3.2k | 1 repos | ~11k | Automated safety check: Pass | CC-BY-4.0 |
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Questions about Writing Claude Md Files
What does Writing Claude Md Files do?
A skill your agent uses when creating or updating CLAUDE.md files for projects or subdirectories - covers top-level vs domain-level organization, capturing architectural intent and contracts, and…. Writing Claude Md Files is an agent skill from ed3dai/ed3d-plugins.
When should I use Writing Claude Md Files?
Writing Claude Md Files fits situations like: updating CLAUDE.md files for projects; subdirectories - covers top-level vs domain-level organization; capturing architectural intent and contracts; mandatory freshness dates.
How do I install Writing Claude Md Files in Claude Code?
Run `npx skills add ed3dai/ed3d-plugins --skill writing-claude-md-files -a claude-code`. Or copy the skill folder (plugins/ed3d-extending-claude/skills/writing-claude-md-files in ed3dai/ed3d-plugins) into .claude/skills/writing-claude-md-files in your project. Claude Code loads it when a task matches its description.
How do I install Writing Claude Md Files in Codex?
Run `npx skills add ed3dai/ed3d-plugins --skill writing-claude-md-files -a codex`. Or copy the skill folder (plugins/ed3d-extending-claude/skills/writing-claude-md-files in ed3dai/ed3d-plugins) into .agents/skills/writing-claude-md-files in your project. Codex loads it when a task matches its description.
Can I use Writing Claude Md Files 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 ed3dai/ed3d-plugins --skill writing-claude-md-files -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/writing-claude-md-files, .gemini/skills/writing-claude-md-files, .github/skills/writing-claude-md-files and .opencode/skills/writing-claude-md-files in your project.
What does Writing Claude Md Files need to run?
SKILL.md names no scripts, command-line tools or credentials: Writing Claude Md Files is instructions for the agent only.
Does Writing Claude Md Files 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 Writing Claude Md Files 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 Writing Claude Md Files use?
No licence was found for Writing Claude Md Files or its repository. Without one, default copyright applies: ask the author before reusing or redistributing it.
How many tokens does Writing Claude Md Files use?
About 2k tokens (SKILL.md is roughly 8.1k 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 Writing Claude Md Files?
Skills that share tags, products or a category with Writing Claude Md Files: Using Agent Skills (addyosmani/agent-skills, 105k stars), Claude Reflect (BayramAnnakov/claude-reflect, 1.8k stars), Writing For Agents (bestofjs/bestofjs, 3.1k stars) and Neat-Freak Knowledge Closeout (KKKKhazix/khazix-skills, 21k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Writing Claude Md Files?
ed3dai (a GitHub organization) maintains it in ed3dai/ed3d-plugins, which has 250 GitHub stars. The repository holds 34 skills in this directory. The repository was last updated on September 6, 2026.
Source: ed3dai/ed3d-plugins on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.