About
The security skill helps developers write secure web applications by preventing common vulnerabilities like XSS, injection, and authentication flaws. It provides guidance for handling user input, implementing security headers, CSP, and securing forms and external resources. Use this skill when working with user data, authentication, or configuring web application security.
Quick Install
Claude Code
Recommendednpx skills add mattnigh/skills_collection -a claude-code/plugin add https://github.com/mattnigh/skills_collectiongit clone https://github.com/mattnigh/skills_collection.git ~/.claude/skills/securityCopy and paste this command in Claude Code to install this skill
GitHub Repository
Frequently asked questions
What is the security skill?
security is a Claude Skill by mattnigh. Skills package instructions and resources that Claude loads on demand, so Claude can perform security-related tasks without extra prompting.
How do I install security?
Use the install commands on this page: add security to Claude Code as a plugin, or clone its repository into your skills directory, then restart Claude so it picks up the skill.
What category does security belong to?
security is in the Documentation category, tagged general.
Is security free to use?
Yes. security is listed on AIMCP and free to install. It runs inside Claude, so no separate service account is required to use the skill itself.
Related Skills
This skill fetches current Railway documentation to answer questions about features, functionality, or specific docs URLs. It ensures developers receive accurate, up-to-date information directly from Railway's official sources. Use it when users ask how Railway works or reference Railway documentation.
This Claude Skill provides expert guidance for writing Python code in n8n's Code nodes, specifically for using Python's standard library and working with n8n's special syntax like `_input`, `_json`, and `_node`. It helps developers understand Python's limitations within n8n and recommends using JavaScript for most workflows while offering Python solutions for specific data transformation needs.
The Archon skill provides RAG-powered semantic search and project management through a REST API. Use it for querying documentation, managing hierarchical projects/tasks, and performing knowledge retrieval with document upload capabilities. Always prioritize Archon first when searching external documentation before using other sources.
This Claude Skill provides expert guidance for writing JavaScript code in n8n's Code nodes. It covers essential n8n-specific syntax like `$input`/`$json` variables, HTTP helpers, and DateTime handling, while troubleshooting common errors. Use it when developing n8n workflows that require custom JavaScript processing in Code nodes.