Writing Spec
Brainstorming ノート (specs/<spec-name>.brainstorm.md) を入力として、 軽量 Markdown 形式の Spec ファイル (specs/<spec-name>.md) を生成する skill。 本ワークフロー (docs/workflow.md) の Spec ステージを担う。 「Spec 書いて」「仕様書作って」「Spec 化して」「Brainstorming を Spec に起こして」等で起動。 生成後の brainstorm.md は specs/archive/ に移動し、status を archived に更新する。 specs/dag.md を参照して DAG 順に処理する (単一 Spec も 1 ノード DAG が生成される統一フロー、2026-04-22 改修)。 Brainstorming が完了している (status: brainstorming-complete) ことが必須前提。
Security AStatic scan found no risk patternsHow grading works ›
From the source SKILL.md
Brainstorming ノートを入力として、軽量 Markdown 形式の Spec ファイルを生成する skill です。本プロジェクトのワークフロー (docs/workflow.md) における Spec ステージを担います。
What this skill does
Writing Spec is a community-contributed Claude Code skill in the general-misc sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/writing-spec/ and loads when your prompt matches the skill's trigger.
Who uses this skill
The Writing Spec Claude Code skill is built for Claude Code users and developers across all disciplines looking for general-purpose AI assistance. It's part of ClaudSkills (also referred to as Claude Skills or Claude Code Skills) — the open community-curated registry of 159,000+ SKILL.md files for Anthropic's Claude Code agent and the wider Claude ecosystem (Claude API, Claude Agent SDK).
How to install
Free
Manual install (2 steps)
mkdir -p ~/.claude/skills/writing-spec
curl -L https://claudskills.com/skills/writing-spec/SKILL.md \
-o ~/.claude/skills/writing-spec/SKILL.md
Or just download SKILL.md directly and drop it into ~/.claude/skills/writing-spec/. Claude Code auto-discovers it on next session.
Skills live at ~/.claude/skills/writing-spec/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\writing-spec\SKILL.md on Windows. See the full install guide for step-by-step instructions.
Telegram
📱 Install from your phone or desktop Telegram
Open @claudskills_bot on Telegram, tap Open Desktop App, and the desktop app installs this skill for you. Or share the bot link with a colleague — they get the same one-tap install. Learn more →
Pro
One-click install via the desktop app
The ClaudSkills desktop app installs any skill directly into ~/.claude/skills/ with one click — no terminal required. Pro starts at $9/mo or $149 lifetime.
Pro
For the full experience including quality scoring and one-click install features for each skill — upgrade to Pro.
Frequently asked questions
How do I install the Writing Spec Claude Code skill?
Install via the ClaudSkills desktop app (one click) or copy
SKILL.md from the source repository to
~/.claude/skills/writing-spec/SKILL.md and restart Claude Code. Both flows are detailed at
claudskills.com/install/.
What does the Writing Spec skill do?
Brainstorming ノート (specs/<spec-name>.brainstorm.md) を入力として、 軽量 Markdown 形式の Spec ファイル (specs/<spec-name>.md) を生成する skill。 本ワークフロー (docs/workflow.md) の Spec ステージを担う。 「Spec 書いて」「仕様書作って」「Spec 化して」「Brainstorming を Spec に起こして」等で起動。 生成後の brainstorm.md は specs/archive/ に移動し、status を archived に更新する。 specs/dag.md を参照して DAG 順に処理する (単一 Spec も 1 ノード DAG が生成される統一フロー、2026-04-22 改修)。 Brainstorming が完了している (status: brainstorming-complete) ことが必須前提。
Is this skill free to install?
Yes. ClaudSkills is an open registry — every skill keeps its source repository's license, and manual install via copy is free. ClaudSkills Pro ($9/mo, $79/yr, or $149 one-time) adds one-click install via the desktop app and a multi-signal Quality Score.
When should I use the Writing Spec skill?
Use Writing Spec when your Claude Code task falls under the General category — specifically in the general misc area. Claude Code auto-discovers installed skills and invokes the right one based on the task description, so you can also ask Claude directly (e.g. "use Writing Spec" or describe the task and let Claude pick). Browse related skills at
/category/general/.
What is a Claude Code skill and how does the Writing Spec skill fit in?
A Claude Code skill is a
SKILL.md file that lives under
~/.claude/skills/<name>/ and tells the Claude Code CLI agent how to perform a specific task (instructions, prompts, allowed tools). Skills are auto-discovered at session start. Writing Spec is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the General category. Learn more at
/learn/what-is-a-claude-skill/.
Attribution & license
Cite this skill
If you reference this skill in a blog post, paper, or documentation, you can cite it as:
APA
gassn. (2026). Writing Spec [Claude Code skill]. ClaudSkills. https://claudskills.com/skills/writing-spec/
BibTeX
@misc{writing-spec-2026,
author = {gassn},
title = {Writing Spec [Claude Code skill]},
year = {2026},
publisher = {ClaudSkills},
url = {https://claudskills.com/skills/writing-spec/}
}Embed this skill
Promote, attribute, or link this skill from your own README, blog post, or documentation. All three snippets are free to use — no sign-up, no API key. More distribution surfaces →
Badge
[](https://claudskills.com/skills/writing-spec/?utm_source=badge&utm_medium=readme&utm_campaign=skill_badge)
<script>
<script src="https://claudskills.com/embed/writing-spec.js" async></script>
<iframe>
<iframe src="https://claudskills.com/embed/writing-spec.html" width="100%" height="160" frameborder="0" loading="lazy" title="ClaudSkills: Writing Spec"></iframe>
Security scan
Grade A · scanned 2026-07-24 — free static scan against the OWASP Agentic Skills Top 10.
No risk patterns were found in any of the ten OWASP-aligned categories. How grading works ›
- ✓ Prompt injection
- ✓ Data exfiltration
- ✓ Supply chain
- ✓ Reverse shell
- ✓ Credentials
- ✓ Execution
- ✓ Filesystem
- ✓ Persistence
- ✓ Obfuscation
- ✓ Network
Show this grade on your repo (click to copy):
[](https://claudskills.com/skills/writing-spec/#security)
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