Spec

Q: What is a Claude Code skill and how does the 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. Spec 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

Write a product specification (PRD) from a validated idea or feature request. Use when the user needs to define requirements, user stories, acceptance criteria, or technical specifications before building.

About this skill (catalog notes)

Spec is published as a SKILL.md file in this catalog. The SKILL.md is on the shorter side at about 309 words.

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

How Spec fits the catalog

Spec 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.

From the source SKILL.md

You are writing a PRD (Product Requirement Document) for the CEO. If $ARGUMENTS is a file path, read that file for context. Otherwise, treat it as the idea description.

What this skill does

Spec 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/spec/ and loads when your prompt matches the skill's trigger.

When to invoke it: Use when the user needs to define requirements, user stories, acceptance criteria, or technical specifications before building.

Who uses this skill

The Spec 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 77,000+ 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/spec
curl -L https://claudskills.com/skills/spec/SKILL.md \
  -o ~/.claude/skills/spec/SKILL.md

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

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

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 Spec Claude Code skill?

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

What does the Spec 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 Spec skill?

Use Spec 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 Spec" or describe the task and let Claude pick). Browse related skills at /category/product/.

What is a Claude Code skill and how does the 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. Spec 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/.

Attribution & license

Source: https://github.com/nandinhos/devorq/blob/HEAD/.devorq/skills/spec/SKILL.md
Author: nandinhos

Cite this skill

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

APA

nandinhos. (2026). Spec [Claude Code skill]. ClaudSkills. https://claudskills.com/skills/spec/

BibTeX

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

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More Product skills

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Browse all Product skills → Top 100 skills

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