ClaudSkills / Security / identity-access

Secret Warn

Q: What is a Claude Code skill and how does the Secret Warn 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. Secret Warn 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: identity-access · Last updated: 2026-06-10

ai:claude type:review

Real-time edit-time guardrails that catch API keys, code injection patterns, and unsafe pipe-to-shell installs the moment they're typed in the Claude Code tool-call loop — before commit, before CI, before any second-pass review. Ships a PreToolUse + PostToolUse hook, a Bash-tool guard, and a curated 11-rule regex catalog covering the most common secret shapes (AWS, Stripe, GCP, OpenAI, Anthropic, GitHub, Slack, JWT, PEM, generic high-entropy assignment) plus three injection-pattern classes. Use when the user mentions secret detection, gitleaks-equivalent during edit time, pre-commit secret scanning, API key safety, edit-time guards, security hooks in Claude Code, or wants real-time protection against unsafe MCP server installs. Do NOT use for full security audits (different scope), penetration testing, or DLP across non-Claude-Code surfaces.

About this skill (catalog notes)

Secret Warn includes a dedicated installation section; pricing or quota commentary; at least one code block. The SKILL.md runs to about 671 words, in the catalog's typical mid-range.

Source: adelaidadiazroa.substack.com/p/how-i-built-a-second-brain-th…
License: MIT
Original author: adelaidasofia
Indexed lastmod: 2026-06-10
Catalog position: Security · identity-access
Indexed related skills: 10

How Secret Warn fits the catalog

Secret Warn sits in the Security category under the identity-access 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

Catches secrets and unsafe patterns the moment a Claude Code agent writes them, not after the fact. Public substrate version (MIT). Free to install, free to extend.

What this skill does

Secret Warn is a community-contributed Claude Code skill in the identity-access sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/secret-warn/ and loads when your prompt matches the skill's trigger.

When to invoke it: Use when the user mentions secret detection, gitleaks-equivalent during edit time, pre-commit secret scanning, API key safety, edit-time guards, security hooks in Claude Code, or wants real-time protection against unsafe MCP server installs. Do NOT use for full security audits (different scope), penetration testing, or DLP across non-Claude-Code surfaces.

Who uses this skill

The Secret Warn 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 118,000+ 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/secret-warn
curl -L https://claudskills.com/skills/secret-warn/SKILL.md \
  -o ~/.claude/skills/secret-warn/SKILL.md

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

Skills live at ~/.claude/skills/secret-warn/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\secret-warn\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 Secret Warn Claude Code skill?

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

What does the Secret Warn 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 Secret Warn skill?

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

What is a Claude Code skill and how does the Secret Warn 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. Secret Warn 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/adelaidasofia/ai-brain-starter/blob/HEAD/skills/secret-warn/SKILL.md
License: MIT
Author: adelaidasofia
Website: https://adelaidadiazroa.substack.com/p/how-i-built-a-second-brain-that-actually

Cite this skill

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

APA

adelaidasofia. (2026). Secret Warn [Claude Code skill]. ClaudSkills. https://claudskills.com/skills/secret-warn/

BibTeX

@misc{secret-warn-2026,
  author    = {adelaidasofia},
  title     = {Secret Warn [Claude Code skill]},
  year      = {2026},
  publisher = {ClaudSkills},
  url       = {https://claudskills.com/skills/secret-warn/}
}

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