Feature Spec Writing

Q: What is a Claude Code skill and how does the Feature Spec Writing 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. Feature Spec Writing is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the Product category. Learn more at https://claudskills.com/learn/what-is-skill-md/.

Category: Product · Sub-category: prd-spec · Last updated: 2026-05-21

Creates focused feature specifications with user stories, acceptance criteria, and edge cases. Lighter than PRD, focuses on single feature implementation. Use when specifying individual features after PRD approval or for standalone feature work.

About this skill (catalog notes)

Feature Spec Writing includes explicit scope boundaries (an explicit 'when not to use' or 'out of scope' section); worked examples; pricing or quota commentary. At roughly 1,879 words the SKILL.md is on the longer end of the catalog distribution.

Indexed lastmod: 2026-05-21
Catalog position: Product · prd-spec
Indexed related skills: 10

How Feature Spec Writing fits the catalog

Feature Spec Writing sits in the Product category under the prd-spec sub-topic in the ClaudSkills catalog. There are 10 related skills indexed alongside it; comparing a few before installing usually reveals which fits your workflow best.

These notes are auto-generated from features detected in the SKILL.md file and from this catalog's structure — they aren't part of the source repository.

What this skill does

Feature Spec Writing is a community-contributed Claude Code skill in the prd-spec sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/feature-spec-writing/ and loads when your prompt matches the skill's trigger.

When to invoke it: Use when specifying individual features after PRD approval or for standalone feature work.

Who uses this skill

The Feature Spec Writing Claude Code skill is built for product managers, product designers, and cross-functional teams planning, shipping, and measuring product features. It's part of ClaudSkills (also referred to as Claude Skills or Claude Code Skills) — the open community-curated registry of 116,000+ 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/feature-spec-writing
curl -L https://claudskills.com/skills/feature-spec-writing/SKILL.md \
  -o ~/.claude/skills/feature-spec-writing/SKILL.md

Or just download SKILL.md directly and drop it into ~/.claude/skills/feature-spec-writing/. Claude Code auto-discovers it on next session.

Skills live at ~/.claude/skills/feature-spec-writing/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\feature-spec-writing\SKILL.md on Windows. See the full install guide for step-by-step instructions.

📱 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.

See pricing → Download desktop app

Frequently asked questions

How do I install the Feature Spec Writing Claude Code skill?

Install via the ClaudSkills desktop app (one click) or copy SKILL.md from the source repository to ~/.claude/skills/feature-spec-writing/SKILL.md and restart Claude Code. Both flows are detailed at claudskills.com/install/.

What does the Feature Spec Writing skill do?

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 Feature Spec Writing skill?

Use Feature Spec Writing when your Claude Code task falls under the Product category — specifically in the prd spec 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 Feature Spec Writing" or describe the task and let Claude pick). Browse related skills at /category/product/.

What is a Claude Code skill and how does the Feature Spec Writing 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. Feature Spec Writing is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the Product category. Learn more at /learn/what-is-a-claude-skill/.

Cite this skill

If you reference this skill in a blog post, paper, or documentation, you can cite it as:

APA

ClaudSkills. (2026). Feature Spec Writing [Claude Code skill]. ClaudSkills. https://claudskills.com/skills/feature-spec-writing/

BibTeX

@misc{feature-spec-writing-2026,
  author    = {ClaudSkills},
  title     = {Feature Spec Writing [Claude Code skill]},
  year      = {2026},
  publisher = {ClaudSkills},
  url       = {https://claudskills.com/skills/feature-spec-writing/}
}

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Badge

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More Product skills

Browse all Product skills in the ClaudSkills registry, or explore these other picks from the same category:

Browse all Product skills → Top 100 skills

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