Secret Warn
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.
Security AStatic scan found no risk patternsHow grading works ›
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 191,000+ 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.
Telegram
📱 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.
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?
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.
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
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/}
}Embed this skill
Promote, attribute, or link this skill from your own README, blog post, or documentation. All three snippets are free to use — no sign-up, no API key. More distribution surfaces →
Badge
[](https://claudskills.com/skills/secret-warn/?utm_source=badge&utm_medium=readme&utm_campaign=skill_badge)
<script>
<script src="https://claudskills.com/embed/secret-warn.js" async></script>
<iframe>
<iframe src="https://claudskills.com/embed/secret-warn.html" width="100%" height="160" frameborder="0" loading="lazy" title="ClaudSkills: Secret Warn"></iframe>
Security scan
Grade A · scanned 2026-08-26 — free static scan against the OWASP Agentic Skills Top 10.
No risk patterns were found in any of the ten OWASP-aligned categories. How grading works ›
- ✓ Prompt injection
- ✓ Data exfiltration
- ✓ Supply chain
- ✓ Reverse shell
- ✓ Credentials
- ✓ Execution
- ✓ Filesystem
- ✓ Persistence
- ✓ Obfuscation
- ✓ Network
Show this grade on your repo (click to copy):
[](https://claudskills.com/skills/secret-warn/#security)
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