Can this skill help me implement a Content Security Policy?

Yes, it provides detailed guidance on configuring CSP directives, setting up nonce-based scripts, and implementing report-only modes for gradual deployment.

Does it support modern frameworks like React or Vue?

Absolutely. It focuses on underlying DOM security principles and browser APIs that are applicable to all modern JavaScript frameworks and libraries.

What techniques are used for XSS prevention?

The skill emphasizes safe DOM manipulation (preferring textContent), DOMPurify integration, context-aware encoding, and the use of Trusted Types to prevent injection at the source.

How does this skill differ from a general security auditor?

While a security auditor focuses on high-level assessments and compliance, the Frontend Security Coder is specialized for hands-on implementation, providing specific code patterns and fixes for client-side vulnerabilities.

Frontend Security Coder

Name: Frontend Security Coder
Author: sickn33

bysickn33

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31,722

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Seguridad y Pruebas

Implements robust client-side security measures including XSS prevention, Content Security Policy (CSP) configuration, and secure DOM manipulation patterns.

This skill transforms Claude into a specialized frontend security expert focused on building resilient and attack-resistant user interfaces. It provides deep technical guidance on preventing cross-site scripting (XSS), implementing strict Content Security Policies, and securing dynamic DOM updates. By emphasizing best practices like allowlist-based validation and context-aware encoding, the skill helps developers mitigate client-side vulnerabilities, protect user sessions, and leverage modern browser security features such as Trusted Types and Subresource Integrity (SRI).

Características Principales

01Secure input validation and allowlist-based sanitization patterns

02Context-aware XSS prevention and advanced DOM sanitization techniques

03Modern browser security integration including Trusted Types and SRI

04Clickjacking protection through frame-busting and CSP headers

0531,722 GitHub stars

06Comprehensive Content Security Policy (CSP) configuration and refinement

Casos de Uso

01Securing single-page applications against injection and script-based attacks

02Hardening frontend infrastructure with security-focused headers and policies

03Implementing strict authentication and session management in the browser

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add sickn33/antigravity-awesome-skills frontend-security-coder

For use in Claude.ai and ChatGPT

Características Principales

01Secure input validation and allowlist-based sanitization patterns

02Context-aware XSS prevention and advanced DOM sanitization techniques

03Modern browser security integration including Trusted Types and SRI

04Clickjacking protection through frame-busting and CSP headers

0531,722 GitHub stars

06Comprehensive Content Security Policy (CSP) configuration and refinement

Casos de Uso

01Securing single-page applications against injection and script-based attacks

02Hardening frontend infrastructure with security-focused headers and policies

03Implementing strict authentication and session management in the browser

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add sickn33/antigravity-awesome-skills frontend-security-coder

For use in Claude.ai and ChatGPT