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csp-cors-headers

Configure CSP, CORS, and HTTP security headers for web applications.

6|1|Updated Feb 27, 2026
Search Tags:#security headers#next.js#csp#web security#nginx#express.js#cors
One-click install
npx skills add https://github.com/RepairYourTech/cfsa-antigravity --skill csp-cors-headers
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: csp-cors-headers
Source: https://github.com/RepairYourTech/cfsa-antigravity/tree/main/.agent/skill-library/stack/security/csp-cors-headers
Command: npx skills add https://github.com/RepairYourTech/cfsa-antigravity --skill csp-cors-headers

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) components.

What problem does it solve?

This Skill helps you configure essential security headers and policies for web applications, protecting them against common web vulnerabilities like XSS and clickjacking, and ensuring secure cross-origin resource sharing.

Core Features & Use Cases

  • Content Security Policy (CSP): Define strict rules for what resources the browser can load, mitigating XSS attacks.
  • CORS Configuration: Securely manage cross-origin requests to your APIs.
  • Security Headers: Implement headers like HSTS, X-Frame-Options, and Permissions-Policy for enhanced browser security.
  • Use Case: When deploying a new web application, use this Skill to set up a robust CSP, configure CORS for your frontend, and add essential security headers to all responses.

Quick Start

Configure Content Security Policy, CORS, and security headers for an Express.js application.

Frequently Asked Questions about csp-cors-headers

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

FAQPage Schema
How do I configure CSP and CORS for an Express.js application?▼

To configure CSP and CORS for an Express.js application, implement Content Security Policy headers to restrict resource loading and define strict cross-origin rules for API requests. This mitigates XSS and data leakage risks across your web app.

What is nonce-based CSP and how does it secure Next.js applications?▼

Nonce-based CSP secures Next.js applications by generating a unique cryptographic token for each request, allowing only authorized inline scripts to execute. This mechanism effectively mitigates XSS attacks while maintaining dynamic script functionality.

Can I set HSTS and X-Frame-Options security headers in an nginx configuration?▼

Yes, you can set HSTS and X-Frame-Options security headers directly within an nginx configuration. Defining these headers in nginx enforces HTTPS connections and prevents clickjacking by controlling frame rendering across your web application.

What is the best way to prevent clickjacking and XSS using HTTP security headers?▼

The best way to prevent clickjacking and XSS using HTTP security headers is to implement a strict Content Security Policy alongside X-Frame-Options and HSTS. These headers instruct browsers to block malicious framing and unauthorized script execution.

Does this security headers configuration support Astro environments?▼

Yes, this security headers configuration supports Astro environments, providing specific guidance for setting up CSP and CORS. It enables secure cross-origin resource sharing and robust header policies tailored for Astro deployments.

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