Writing Skills
sandgardenhq/sgai
TDD for process documentation - test with subagents before writing, iterate until bulletproof.
A skill your agent uses when creating new skills, editing existing skills, or verifying skills work before deployment - applies TDD to process documentation by testing with subagents before writing…
Install Writing Skills
$ npx skills add ed3dai/ed3d-plugins --skill writing-skills -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install ed3dai/ed3d-plugins writing-skills --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-skills .claude/skills/writing-skills && 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-skills" agent skill from https://github.com/ed3dai/ed3d-plugins/tree/main/plugins/ed3d-extending-claude/skills/writing-skills into .claude/skills/writing-skills/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "writing-skills", 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-skillsType 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-skills -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install ed3dai/ed3d-plugins writing-skills --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-skills .agents/skills/writing-skills && 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-skills" agent skill from https://github.com/ed3dai/ed3d-plugins/tree/main/plugins/ed3d-extending-claude/skills/writing-skills into .agents/skills/writing-skills/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "writing-skills", 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-skills -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install ed3dai/ed3d-plugins writing-skills --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-skills .cursor/skills/writing-skills && 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-skills" agent skill from https://github.com/ed3dai/ed3d-plugins/tree/main/plugins/ed3d-extending-claude/skills/writing-skills into .cursor/skills/writing-skills/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "writing-skills", 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-skills--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-skills -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install ed3dai/ed3d-plugins writing-skills --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-skills .gemini/skills/writing-skills && 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-skills" agent skill from https://github.com/ed3dai/ed3d-plugins/tree/main/plugins/ed3d-extending-claude/skills/writing-skills into .gemini/skills/writing-skills/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "writing-skills", 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-skillsInstalls 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-skills -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-skills .github/skills/writing-skills && 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-skills" agent skill from https://github.com/ed3dai/ed3d-plugins/tree/main/plugins/ed3d-extending-claude/skills/writing-skills into .github/skills/writing-skills/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "writing-skills", 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-skills -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-skills --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-skills .opencode/skills/writing-skills && 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-skills" agent skill from https://github.com/ed3dai/ed3d-plugins/tree/main/plugins/ed3d-extending-claude/skills/writing-skills into .opencode/skills/writing-skills/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "writing-skills", 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-skills- GitHub stars
- 250
- Used in
- 1 other repo
- Token cost
- ~1.3k tokens
- SKILL.md length
- 476 words
- Files
- 1
- Skills in repo
- 34
- Repo updated
- First seen
- Licence
- None found
At a glance
A skill your agent uses when creating new skills, editing existing skills, or verifying skills work before deployment - applies TDD to process documentation by testing with subagents before writing…
- Works in 3 steps: Create combined pressures (time + sunk… → Document exact violations and… → Identify failure patterns
- Creating new skills
- SKILL.md covers Core Principle, TDD Mapping, When to Create a Skill and Skill Types, plus 7 more sections
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
What it does
Writing Skills is an agent skill from ed3dai/ed3d-plugins. Use when creating new skills, editing existing skills, or verifying skills work before deployment - applies TDD to process documentation by testing with subagents before writing, iterating until bulletproof against rationalization
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 Agent Workflows, covering Skill authoring, Test-driven development and Operations and SOPs. 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
- Creating new skills
- Editing existing skills
- Verifying skills work before deployment - applies TDD to process documentation by testing with subagents before writing
- Iterating until bulletproof against rationalization
Example prompts
- “/writing-skills”
Workflow steps
3 steps, taken from the first numbered list in SKILL.md.
- Create combined pressures (time + sunk cost + exhaustion)
- Document exact violations and rationalizations verbatim
- Identify failure patterns
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).
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 Skills loads about 1.3k tokens when it runs. Until then it costs about 61 tokens; SKILL.md has 476 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 476 words (~1,258 tokens).
“REQUIRED BACKGROUND: Read ed3d-extending-claude:writing-claude-directives for foundational guidance on token efficiency, discovery optimization, and compliance techniques. This skill focuses on TDD methodology specific to skill creation.”
- name
- writing-skills
- user-invocable
- false
Files
Just SKILL.md in plugins/ed3d-extending-claude/skills/writing-skills of ed3dai/ed3d-plugins.
Open the folder on GitHubat commit 0c90f4b
Used in 1 other repository
We found 1 copy of this SKILL.md (exact, near-identical or edited) in other folders, from 1 other GitHub owner. This page covers the copy in ed3dai/ed3d-plugins, which our catalogue first saw on October 7, 2026.
Compare with similar skills
Writing Skills 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 Skills this skilled3dai/ed3d-plugins | 250 | 1 repos | ~1.3k | Automated safety check: Pass | None | |
| Writing Skillssandgardenhq/sgai | 137 | — | ~4.9k | Automated safety check: Pass | Custom licence | |
| Superpowers Writing Skillschristopherarter/superpowers-reasonix | 102 | — | ~2.8k | Automated safety check: Pass | MIT | |
| Create SkillNeoLabHQ/context-engineering-kit | 1.8k | — | ~7.6k | Automated safety check: Pass | GPL-3.0 | |
| Implementing Tasks with Subagent Reviewprime-radiant-inc/iterative-development | 181 | — | ~1.2k | Automated safety check: Pass | Apache-2.0 | |
| Writing SkillsTechDufus/oh-my-claude | 174 | — | ~1.3k | Automated safety check: Pass | MIT |
Similar skills
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christopherarter/superpowers-reasonix
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Create Skill
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Guide for creating effective skills. An agent skill from NeoLabHQ/context-engineering-kit.
Implementing Tasks with Subagent Review
prime-radiant-inc/iterative-development
Runs a batch of TDD-sized tasks by dispatching an implementer subagent per task, followed by two-stage parallel adversarial review and fix loops.
Writing Skills
TechDufus/oh-my-claude
Methodology for creating effective skills using TDD principles.
Writing Skills
jnMetaCode/superpowers-zh
当创建新技能、编辑现有技能或在部署前验证技能是否有效时使用
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Related
Categories
Questions about Writing Skills
What does Writing Skills do?
A skill your agent uses when creating new skills, editing existing skills, or verifying skills work before deployment - applies TDD to process documentation by testing with subagents before writing…. Writing Skills is an agent skill from ed3dai/ed3d-plugins.
When should I use Writing Skills?
Writing Skills fits situations like: creating new skills; editing existing skills; verifying skills work before deployment - applies TDD to process documentation by testing with subagents before writing; iterating until bulletproof against rationalization.
How do I install Writing Skills in Claude Code?
Run `npx skills add ed3dai/ed3d-plugins --skill writing-skills -a claude-code`. Or copy the skill folder (plugins/ed3d-extending-claude/skills/writing-skills in ed3dai/ed3d-plugins) into .claude/skills/writing-skills in your project. Claude Code loads it when a task matches its description.
How do I install Writing Skills in Codex?
Run `npx skills add ed3dai/ed3d-plugins --skill writing-skills -a codex`. Or copy the skill folder (plugins/ed3d-extending-claude/skills/writing-skills in ed3dai/ed3d-plugins) into .agents/skills/writing-skills in your project. Codex loads it when a task matches its description.
Can I use Writing Skills 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-skills -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-skills, .gemini/skills/writing-skills, .github/skills/writing-skills and .opencode/skills/writing-skills in your project.
What does Writing Skills need to run?
SKILL.md names no scripts, command-line tools or credentials: Writing Skills is instructions for the agent only.
Does Writing Skills 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 Skills 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 Skills use?
No licence was found for Writing Skills or its repository. Without one, default copyright applies: ask the author before reusing or redistributing it.
How many tokens does Writing Skills use?
About 1.3k tokens (SKILL.md is roughly 5k 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 Skills?
Skills that share tags, products or a category with Writing Skills: Writing Skills (sandgardenhq/sgai, 137 stars), Superpowers Writing Skills (christopherarter/superpowers-reasonix, 102 stars), Create Skill (NeoLabHQ/context-engineering-kit, 1.8k stars) and Implementing Tasks with Subagent Review (prime-radiant-inc/iterative-development, 181 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Writing Skills?
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.