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Auth Security Reviewer

Checked
patricio0312rev·vlatest·security·MIT

Helps with authentication, security as part of implementing security and authentication workflows.

Repository

Install on your platform

Showing Claude Code. One command installs this skill into any of the agents below.

  1. 1

    Run this in your project

    terminal
    $ npx skills add patricio0312rev/skills --skill auth-security-reviewer -a claude-code

  2. Uses the open-source skills CLI and needs Node.js. Add -g to install it for your user instead of this project.

What we know about this skill

Publisher

patricio0312rev

Taken from the source listing. We haven't verified who controls this account.

Install target

Live repository

Not pinned. Installing fetches whatever the repository holds at the time you run the command.

No human has reviewed this code. The checks below are a static scan of the files at one commit — nobody has run this skill or judged whether it works. A skill runs with whatever access you give your agent, so read the source before you install it.

Automated safety checks

scanned

This skill passed all 6 checks. We read its files at one commit and looked for the things that make a skill dangerous to run — not for whether it works.

  • Declares what it does: passed

    SKILL.md parses and declares a name and a description.

    SKILL.md exists, its frontmatter parses, and it declares a name and a description.

  • No undeclared network calls: passed

    Makes no network calls.

    Every host the skill dials — from its scripts, its config endpoints or the commands it tells the agent to run — is either well-known package and API infrastructure or declared in its own frontmatter. Links in documentation are not counted.

  • No obfuscated payloads: passed

    No encoded or obfuscated payloads.

    No base64, hex or compressed blob is decoded and then executed, and no encoded shell commands.

  • No credential access: passed

    Reads no keys, tokens, keychains or credential files.

    Neither the code nor the SKILL.md instructions read SSH keys, cloud credentials, keychains, token stores, browser cookie databases or dotfiles that hold secrets.

  • No pipe-to-shell installers: passed

    No pipe-to-shell or download-and-run installers.

    No `curl … | sh` pattern, in the code or in the instructions, that runs code fetched at run time.

  • Pinned to a commit: passed

    Scanned patricio0312rev/skills at 79ea6af485.

    The exact upstream commit SHA that was scanned is recorded, so the result refers to specific bytes.

Commit
79ea6af485
Manifest
security/auth-security-reviewer/SKILL.md
Scanned
1 file, 411 lines
This is a static scan, not a review. It reads the skill's files; it does not run them, and it cannot tell you whether the skill is any good or whether the code does what its description says. A skill runs with whatever access you give your agent.
What each check looks for →

About this skill

What it does

The Auth Security Reviewer skill helps identify and correct common security vulnerabilities in authentication workflows, including session management, JSON Web Token (JWT) implementation, and Cross-Site Request Forgery (CSRF) protection. It provides examples of insecure configurations alongside secure alternatives, highlighting best practices for protecting user data and preventing unauthorized access. The skill focuses on code review to improve the overall security posture of applications handling authentication.

When to use it

  • When implementing or reviewing authentication systems in a web application.
  • To identify potential vulnerabilities related to session management and JWT usage.
  • For ensuring proper CSRF protection is implemented across state-changing routes.
  • During code audits to improve the security of existing authentication flows.

Key capabilities

  • Session Security Review: Identifies insecure session configurations (e.g., weak secrets, unnecessary resave and saveUninitialized, missing HTTPS-only cookie flags) and provides secure alternatives.
  • JWT Security Review: Highlights vulnerabilities in JWT implementations (e.g., hardcoded secrets, lack of expiration, storing tokens in localStorage) and suggests secure practices like using environment variables for secrets, setting short expiry times, and storing tokens in HTTPOnly cookies.
  • CSRF Protection: Demonstrates the use of csurf middleware to protect against CSRF attacks and provides examples of how to integrate it into routes and provide CSRF tokens to the frontend.

Example prompts

  • "Review this session configuration code for security vulnerabilities." (followed by pasting the insecure session configuration)
  • "How can I securely implement JWT authentication in my application?"
  • "Show me an example of how to protect a POST route from CSRF attacks."

Tips & gotchas

  • The skill provides specific examples using libraries like jsonwebtoken and csurf. Ensure these dependencies are available in your environment.
  • The provided code snippets are illustrative; adapt them to fit your application's specific needs and security policies.
  • Pay close attention to the recommendations regarding storing secrets (using environment variables) and token expiry times for maximum security.