Arn Code Plan

Q: What is a Claude Code skill and how does the Arn Code Plan 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 Plan 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: 2026-06-16

type:review

This skill should be used when the user says "arness code plan", "arn-code-plan", "plan this", "write a plan", "create plan", "implementation plan", "plan feature", "plan the spec", "plan from spec", "generate plan", "arness code plan FEATURE_X", "plan the bugfix", "plan bugfix", "make a plan", or wants to generate an implementation plan from a Arness specification. The skill invokes the arn-code-feature-planner agent to generate the plan, presents it for review, and iterates on user feedback until approved. Produces a PLAN_PREVIEW file that feeds into /arn-code-save-plan.

From the source SKILL.md

Generate an implementation plan from a Arness specification by invoking the arn-code-feature-planner agent. The plan is written to disk as a PLAN_PREVIEW file, presented to the user for review, and iteratively refined based on feedback until approved. The approved plan then feeds into /arn-code-save-plan for structuring into phases, tasks, and reports.

What this skill does

Arn Code Plan 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-plan/ and loads when your prompt matches the skill's trigger.

Who uses this skill

The Arn Code Plan 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 117,000+ 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-plan
curl -L https://claudskills.com/skills/arn-code-plan/SKILL.md \
  -o ~/.claude/skills/arn-code-plan/SKILL.md

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

Skills live at ~/.claude/skills/arn-code-plan/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\arn-code-plan\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 Arn Code Plan Claude Code skill?

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

What does the Arn Code Plan 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 Arn Code Plan skill?

Use Arn Code Plan 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 Plan" 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 Plan 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 Plan 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/AppsVortex/arness/blob/b9084b6ae3e4a0e6331503fbf3aa2260bb1b04af/plugins/arn-code/skills/arn-code-plan/SKILL.md
License: MIT
Author: AppsVortex
Website: https://arness.appsvortex.com

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 Plan [Claude Code skill]. ClaudSkills. https://claudskills.com/skills/arn-code-plan/

BibTeX

@misc{arn-code-plan-2026,
  author    = {AppsVortex},
  title     = {Arn Code Plan [Claude Code skill]},
  year      = {2026},
  publisher = {ClaudSkills},
  url       = {https://claudskills.com/skills/arn-code-plan/}
}

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