How do I check a live API endpoint using this skill?

You can ask Claude to 'check CORS headers for [URL]' and the skill will fetch and analyze the server response headers automatically.

What does the CORS Policy Validator skill do?

It analyzes CORS configurations and headers to find security risks like unauthorized origin access and misconfigured headers.

Why is CORS validation important for security?

Incorrect CORS settings can expose sensitive user data to malicious third-party websites through unauthorized cross-origin requests.

Does it work with local configuration files?

Yes, it can read and validate JSON, YAML, or other policy files within your local project directory to find issues before you deploy.

CORS Policy Validator

Name: CORS Policy Validator
Author: jeremylongshore

byjeremylongshore

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884

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安全与测试

Validates Cross-Origin Resource Sharing (CORS) configurations and headers to identify security vulnerabilities and ensure compliance with best practices.

The CORS Policy Validator skill empowers developers to secure their web applications by auditing CORS implementations directly within Claude Code. By analyzing local policy files or live API headers, the skill identifies common misconfigurations such as overly permissive origins, insecure credential handling, or header mismatches. It provides actionable reports that help prevent unauthorized cross-origin requests and data leaks, making it an essential tool for maintaining a robust security posture during API development, deployment, and routine auditing.

主要功能

01Deep scanning of local configuration files and policy documents

02Seamless integration with Claude Code for interactive security debugging

03Identification of security risks like wildcard origins and null origins

04884 GitHub stars

05Automated CORS header analysis for live API endpoints

06Detailed reporting on policy correctness and security compliance

使用场景

01Troubleshooting cross-origin request failures during frontend development

02Auditing an existing API's CORS headers for potential security leaks

03Validating new CORS policy configuration files before deploying to production

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add jeremylongshore/claude-code-plugins-plus-skills skill-adapter

For use in Claude.ai and ChatGPT

Download Skill