Claude Code Skills·Claude Skills·The open SKILL.md registry for Claude
ClaudSkills / Product / prd-spec

Arn Code Feature Spec

Category: Product  ·  Sub-category: prd-spec  ·  Last updated:
This skill should be used when the user says "feature spec", "arness code feature spec", "arn-code-feature-spec", "spec this feature", "help me spec", "design this feature", "feature design", "write a spec", "create a specification", "I have an idea for a feature", "let's flesh out this feature", "decompose feature", "spec XL feature", "resume spec", "continue spec", "finish my spec", "break down feature", or wants to iteratively develop a feature idea into a well-formed specification through guided conversation with architectural analysis. For XL features with decomposition hints, creates multiple sub-feature specs with full traceability. Produces specification documents capturing WHAT to build and WHY, which then feed into plan creation.
Security AStatic scan found no risk patternsHow grading works ›

From the source SKILL.md

Develop a feature idea into a well-formed specification through iterative conversation, aided by architectural analysis from the arn-code-architect agent and, when the feature involves UI, user experience design from the arn-code-ux-specialist agent. This is a conversational skill that runs in normal conversation (NOT plan mode). The primary artifact is a feature specification written to the project's specs directory that captures requirements, architectural assessment, and decisions from the exploration conversation. The spec then informs plan creation via the /arn-code-plan skill.

What this skill does

Arn Code Feature 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/arn-code-feature-spec/ and loads when your prompt matches the skill's trigger.

Who uses this skill

The Arn Code Feature 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 146,000+ 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/arn-code-feature-spec
curl -L https://claudskills.com/skills/arn-code-feature-spec/SKILL.md \
  -o ~/.claude/skills/arn-code-feature-spec/SKILL.md

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

Skills live at ~/.claude/skills/arn-code-feature-spec/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\arn-code-feature-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.

See pricing → Download desktop app

Frequently asked questions

How do I install the Arn Code Feature Spec Claude Code skill?
Install via the ClaudSkills desktop app (one click) or copy SKILL.md from the source repository to ~/.claude/skills/arn-code-feature-spec/SKILL.md and restart Claude Code. Both flows are detailed at claudskills.com/install/.
What does the Arn Code Feature Spec skill do?
This skill should be used when the user says "feature spec", "arness code feature spec", "arn-code-feature-spec", "spec this feature", "help me spec", "design this feature", "feature design", "write a spec", "create a specification", "I have an idea for a feature", "let's flesh out this feature", "decompose feature", "spec XL feature", "resume spec", "continue spec", "finish my spec", "break down feature", or wants to iteratively develop a feature idea into a well-formed specification through guided conversation with architectural analysis. For XL features with decomposition hints, creates multiple sub-feature specs with full traceability. Produces specification documents capturing WHAT to build and WHY, which then feed into plan creation.
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 Arn Code Feature Spec skill?
Use Arn Code Feature 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 Arn Code Feature 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 Arn Code Feature 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. Arn Code Feature 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

Cite this skill

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

APA
AppsVortex. (2026). Arn Code Feature Spec [Claude Code skill]. ClaudSkills. https://claudskills.com/skills/arn-code-feature-spec/
BibTeX
@misc{arn-code-feature-spec-2026,
  author    = {AppsVortex},
  title     = {Arn Code Feature Spec [Claude Code skill]},
  year      = {2026},
  publisher = {ClaudSkills},
  url       = {https://claudskills.com/skills/arn-code-feature-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
[![ClaudSkills](https://claudskills.com/badge/arn-code-feature-spec.svg)](https://claudskills.com/skills/arn-code-feature-spec/?utm_source=badge&utm_medium=readme&utm_campaign=skill_badge)
<script>
<script src="https://claudskills.com/embed/arn-code-feature-spec.js" async></script>
<iframe>
<iframe src="https://claudskills.com/embed/arn-code-feature-spec.html" width="100%" height="160" frameborder="0" loading="lazy" title="ClaudSkills: Arn Code Feature Spec"></iframe>

Security scan

Grade A · scanned 2026-07-06 — 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 ›

Show this grade on your repo (click to copy):

[![Security: A](https://img.shields.io/badge/Security-A-2e7d32)](https://claudskills.com/skills/arn-code-feature-spec/#security)

Free. No spam. Unsubscribe in one click.

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
Part of ClaudSkills — the open registry for Claude Skills & Claude Code Skills.  ·  What's New  ·  Install guide  ·  About  ·  llms.txt

Part of Acreator Store — Adam Lankamer's AI tools: PerfectStudio · Ucaption · UTagger · AutoXPoster · TestYourSkills · AutomationFlows · Au Naturel · Telegram @acreatorstore

Categories

Use cases

Popular tags

Learn

Site