App Security

Q: What is a Claude Code skill and how does the App Security 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. App Security 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: security-misc · Last updated: 2026-06-13

fw:flutter cloud:firebase

Configure Firebase App Check and other security measures for Flutter apps before launch. Use this skill when the user asks about App Check, Play Integrity, App Attest, DeviceCheck, API protection, preventing abuse, securing Firebase services, attestation providers, or protecting backend APIs from unauthorized clients. Also triggers on: 'protect my API', 'App Check setup', 'prevent scraping', 'verify legitimate app', or 'secure Firebase'.

From the source SKILL.md

This skill covers security measures that should be in place before a production launch, with Firebase App Check as the primary defense against API abuse.

What this skill does

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

Who uses this skill

The App Security 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 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/app-security
curl -L https://claudskills.com/skills/app-security/SKILL.md \
  -o ~/.claude/skills/app-security/SKILL.md

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

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

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

What does the App Security 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 App Security skill?

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

What is a Claude Code skill and how does the App Security 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. App Security 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/DojoCodingLabs/app-gtm-release-toolkit/blob/HEAD/skills/app-security/SKILL.md
Author: DojoCodingLabs

Cite this skill

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

APA

DojoCodingLabs. (2026). App Security [Claude Code skill]. ClaudSkills. https://claudskills.com/skills/app-security/

BibTeX

@misc{app-security-2026,
  author    = {DojoCodingLabs},
  title     = {App Security [Claude Code skill]},
  year      = {2026},
  publisher = {ClaudSkills},
  url       = {https://claudskills.com/skills/app-security/}
}

Embed this skill

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Badge

[![ClaudSkills](https://claudskills.com/badge/app-security.svg)](https://claudskills.com/skills/app-security/?utm_source=badge&utm_medium=readme&utm_campaign=skill_badge)

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