# Jeremylongshore Claude Code Plugins Plus Skills Authentication Validator > Overview - Skill: `tomevault-io/jeremylongshore-claude-code-plugins-plus-skills-authenticati` (Agent Skill, multi-file: 2 files) - Install (CLI): `npx skillmds@latest add tomevault-io/jeremylongshore-claude-code-plugins-plus-skills-authenticati` - Raw SKILL.md: https://api.skillmd.com/api/skills/tomevault-io/jeremylongshore-claude-code-plugins-plus-skills-authenticati/raw - Safety review: pending (external: skill-scanner PASS, skillspector PASS) - Works with: Claude Code, Claude.ai, OpenAI Codex - Category: Coding & Dev Tools - Author: tomevault-io (https://skillmd.com/u/tomevault-io) - Updated: 2026-09-17 - Page: https://skillmd.com/skills/tomevault-io/jeremylongshore-claude-code-plugins-plus-skills-authenticati --- ## Overview This skill allows Claude to assess the security of authentication mechanisms in a system or application. It provides a detailed report highlighting potential vulnerabilities and offering recommendations for improvement based on established security principles. ## How It Works 1. **Initiate Validation**: Upon receiving a trigger phrase, the skill activates the `authentication-validator` plugin. 2. **Analyze Authentication Methods**: The plugin examines the implemented authentication methods, such as JWT, OAuth, session-based, or API keys. 3. **Generate Security Report**: The plugin generates a comprehensive report outlining potential vulnerabilities and recommended fixes related to password security, session management, token security (JWT), multi-factor authentication, and account security. ## When to Use This Skill This skill activates when you need to: - Assess the security of an application's authentication implementation. - Identify vulnerabilities in password policies and session management. - Evaluate the security of JWT tokens and MFA implementation. - Ensure compliance with security best practices and industry standards. ## Examples ### Example 1: Assessing JWT Security User request: "validate authentication for jwt implementation" The skill will: 1. Activate the `authentication-validator` plugin. 2. Analyze the JWT implementation, checking for strong signing algorithms, proper expiration claims, and audience/issuer validation. 3. Generate a report highlighting any vulnerabilities and recommending best practices for JWT security. ### Example 2: Checking Session Security User request: "authcheck session cookies" The skill will: 1. Activate the `authentication-validator` plugin. 2. Analyze the session cookie settings, including HttpOnly, Secure, and SameSite attributes. 3. Generate a report outlining any potential session fixation or CSRF vulnerabilities and recommending appropriate countermeasures. ## Best Practices - **Password Hashing**: Always use strong hashing algorithms like bcrypt or Argon2 with appropriate salt generation. - **Token Expiration**: Implement short-lived access tokens and refresh token rotation for enhanced security. - **Multi-Factor Authentication**: Encourage or enforce MFA to mitigate the risk of password compromise. ## Integration This skill can be used in conjunction with other security-related plugins to provide a comprehensive security assessment of an application. For example, it can be used alongside a code analysis plugin to identify potential code-level vulnerabilities related to authentication. --- > Converted and distributed by [TomeVault](https://tomevault.io/claim/jeremylongshore) — claim your Tome and manage your conversions.