reviewing-frontend-security

Review React/Next.js/TypeScript frontend code for XSS, token exposure, and unsafe rendering.

Updated Apr 14, 2026
One-click install
npx skills add https://github.com/somachak/claude-code-skills-db --skill reviewing-frontend-security
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: reviewing-frontend-security
Source: https://github.com/somachak/claude-code-skills-db/tree/main/skills/frontend/reviewing-frontend-security
Command: npx skills add https://github.com/somachak/claude-code-skills-db --skill reviewing-frontend-security

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Reviews browser-facing code for XSS, token exposure, unsafe rendering, insecure storage, and client-side trust mistakes. Use when handling user content, auth state, embeds, or rich text.

Core Features & Use Cases

  • Provides a decision framework for React/Next.js/TypeScript to sanitize inputs, prevent dangerous rendering, and manage token storage securely.
  • Includes a checklist for auditing dependencies, CSP headers, storage strategies, and safe rendering practices across frontend code.
  • Supports use cases such as reviewing new features, third-party integrations, and sensitive UI components to ensure client-side trust and security.

Quick Start

Review your next frontend feature by applying the decision framework and checklist to your codebase.

Frequently Asked Questions about reviewing-frontend-security

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I review React code for XSS and unsafe rendering vulnerabilities?▼

To review React code for XSS and unsafe rendering vulnerabilities, apply a decision framework that checks for dangerous rendering patterns and verifies input sanitization. This process identifies client-side trust mistakes in browser-facing code.

What is the best way to secure authentication tokens in Next.js client-side storage?▼

Securing authentication tokens in Next.js client-side storage requires evaluating storage strategies to prevent token exposure. A security checklist helps identify insecure storage practices and ensures sensitive authentication state remains protected.

How do I prevent XSS when handling user content and rich text in a TypeScript frontend?▼

Preventing XSS when handling user content and rich text in a TypeScript frontend involves applying concrete sanitization guidance. This ensures user-generated content is safely processed without introducing unsafe rendering vulnerabilities.

Does this frontend security review approach work for auditing third-party integrations and dependencies?▼

Yes, this frontend security review approach works for auditing third-party integrations and dependencies. The included checklist guides you through dependency auditing and evaluating embeds to harden client-side security.

How do I configure Content Security Policy (CSP) headers to harden UI trust?▼

Configuring Content Security Policy (CSP) headers to harden UI trust involves applying concrete guidance on CSP usage within your frontend review. This mitigates client-side trust mistakes and secures browser-facing code.