3a Review

Q: What is a Claude Code skill and how does the 3a Review 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. 3a Review is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the General category. Learn more at https://claudskills.com/learn/what-is-skill-md/.

Category: General · Sub-category: operations · Last updated: 2026-06-12

type:review

Use when a developer is about to transition between project phases and needs a readiness check. Validates that prerequisites are met before moving from planning to implementation, implementation to deploy, or deploy to production. Triggers on: "am I ready to deploy", "review", "readiness check", "pre-deploy", "pre-production", "gate check", "3a review", "can I move on", "is my agent ready", "checklist", "before I deploy", "go to production". Not for creating a plan — use 3a-plan. Not for tracking progress — use 3a-track.

About this skill (catalog notes)

3a Review includes at least one code block. The SKILL.md is on the shorter side at about 583 words.

License: MIT-0
Original author: aws-samples
Indexed lastmod: 2026-06-12
Catalog position: General · operations
Indexed related skills: 10

How 3a Review fits the catalog

3a Review sits in the General category under the operations 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

Verify readiness before transitioning between project phases.

What this skill does

3a Review is a community-contributed Claude Code skill in the operations sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/3a-review/ and loads when your prompt matches the skill's trigger.

When to invoke it: Use when a developer is about to transition between project phases and needs a readiness check. Validates that prerequisites are met before moving from planning to implementation, implementation to deploy, or deploy to production.

Who uses this skill

The 3a Review 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 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/3a-review
curl -L https://claudskills.com/skills/3a-review/SKILL.md \
  -o ~/.claude/skills/3a-review/SKILL.md

Or just download SKILL.md directly and drop it into ~/.claude/skills/3a-review/. Claude Code auto-discovers it on next session.

Skills live at ~/.claude/skills/3a-review/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\3a-review\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 3a Review Claude Code skill?

Install via the ClaudSkills desktop app (one click) or copy SKILL.md from the source repository to ~/.claude/skills/3a-review/SKILL.md and restart Claude Code. Both flows are detailed at claudskills.com/install/.

What does the 3a Review 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 3a Review skill?

Use 3a Review when your Claude Code task falls under the General category — specifically in the operations 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 3a Review" or describe the task and let Claude pick). Browse related skills at /category/general/.

What is a Claude Code skill and how does the 3a Review 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. 3a Review 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

Source: https://github.com/aws-samples/sample-agentic-ai-acceleration-kr/blob/7696fce7d8f25e15269160703b1506c881e63824/plugin/skills/3a-review/SKILL.md
License: MIT-0
Author: aws-samples

Cite this skill

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

APA

aws-samples. (2026). 3a Review [Claude Code skill]. ClaudSkills. https://claudskills.com/skills/3a-review/

BibTeX

@misc{3a-review-2026,
  author    = {aws-samples},
  title     = {3a Review [Claude Code skill]},
  year      = {2026},
  publisher = {ClaudSkills},
  url       = {https://claudskills.com/skills/3a-review/}
}

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