Why isn't .gitignore enough for Claude Code security?

While .gitignore prevents files from being committed to Git, Claude Code can still read local files during development. Secrets Guard uses active hooks and physical isolation to stop the AI from accessing these files entirely.

Can I customize which files are protected by Secrets Guard?

Yes, you can easily customize the protect-secrets.conf file to add specific filenames, directory patterns, or custom regex strings tailored to your project's unique security requirements.

How does the PreToolUse Hook provide a fail-safe?

It executes a script before any tool runs, scanning tool inputs for sensitive patterns. If a secret access attempt is detected, it blocks the operation instantly, even if other configuration settings fail.

What is the benefit of the physical separation layer?

Moving secrets to a directory like ~/.secrets/ ensures that even if an AI tool attempts to scan your project folder, the sensitive data is physically located outside of its operational scope.

Secrets Guard for Claude Code

Name: Secrets Guard for Claude Code
Author: sk8metalme

bysk8metalme

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セキュリティとテスト

Protects sensitive credentials and API tokens using a multi-layered defense strategy within the Claude Code environment.

Secrets Guard provides a robust security framework for Claude Code users to prevent accidental exposure of sensitive data such as API keys, database credentials, and SSH tokens. By implementing a three-tier defense system—physical isolation of secret files, restricted access permissions in configuration, and custom PreToolUse execution hooks—it ensures that AI agents can assist with complex development tasks without compromising your private credentials or environment variables.

主な機能

01Fail-safe PreToolUse hooks to block unauthorized file read operations

021 GitHub stars

03Automated shell functions for secure environment variable loading

04Three-layer (L1-L3) defense architecture for maximum security

05Physical isolation of secrets in restricted system directories

06Pre-configured Gitleaks integration for proactive secret scanning

ユースケース

01Managing multiple project credentials in a centralized, isolated directory

02Implementing security guardrails for AI-driven development in enterprise environments

03Preventing Claude Code from accidentally reading or logging .env files

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add sk8metalme/ai-agent-setup secrets-guard

For use in Claude.ai and ChatGPT

Download Skill