V3 Security Overhaul

Q: What is a Claude Code skill and how does the V3 Security Overhaul 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. V3 Security Overhaul is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the Security category. Learn more at https://claudskills.com/learn/what-is-skill-md/.

Category: Security · Sub-category: appsec-tools · Last updated: 2026-06-13

ai:claude

Complete security architecture overhaul for claude-flow v3. Addresses critical CVEs (CVE-1, CVE-2, CVE-3) and implements secure-by-default patterns. Use for security-firs — from frankxai/arcanea

What this skill does

V3 Security Overhaul is a community-contributed Claude Code skill in the appsec-tools sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/v3-security-overhaul/ and loads when your prompt matches the skill's trigger.

Who uses this skill

The V3 Security Overhaul Claude Code skill is built for security engineers, penetration testers, DevSecOps practitioners, and development teams hardening codebases and infrastructure. 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/v3-security-overhaul
curl -L https://claudskills.com/skills/v3-security-overhaul/SKILL.md \
  -o ~/.claude/skills/v3-security-overhaul/SKILL.md

Or just download SKILL.md directly and drop it into ~/.claude/skills/v3-security-overhaul/. Claude Code auto-discovers it on next session.

Skills live at ~/.claude/skills/v3-security-overhaul/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\v3-security-overhaul\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 V3 Security Overhaul Claude Code skill?

Install via the ClaudSkills desktop app (one click) or copy SKILL.md from the source repository to ~/.claude/skills/v3-security-overhaul/SKILL.md and restart Claude Code. Both flows are detailed at claudskills.com/install/.

What does the V3 Security Overhaul skill do?

Complete security architecture overhaul for claude-flow v3. Addresses critical CVEs (CVE-1, CVE-2, CVE-3) and implements secure-by-default patterns. Use for security-firs — from frankxai/arcanea

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 V3 Security Overhaul skill?

Use V3 Security Overhaul when your Claude Code task falls under the Security category — specifically in the appsec tools 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 V3 Security Overhaul" or describe the task and let Claude pick). Browse related skills at /category/security/.

What is a Claude Code skill and how does the V3 Security Overhaul 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. V3 Security Overhaul is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the Security category. Learn more at /learn/what-is-a-claude-skill/.

Attribution & license

Source: https://github.com/frankxai/arcanea/blob/HEAD/.claude/skills/v3-security-overhaul/SKILL.md
Author: frankxai

Cite this skill

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

APA

frankxai. (2026). V3 Security Overhaul [Claude Code skill]. ClaudSkills. https://claudskills.com/skills/v3-security-overhaul/

BibTeX

@misc{v3-security-overhaul-2026,
  author    = {frankxai},
  title     = {V3 Security Overhaul [Claude Code skill]},
  year      = {2026},
  publisher = {ClaudSkills},
  url       = {https://claudskills.com/skills/v3-security-overhaul/}
}

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Badge

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