What is a CORS policy validator?

It is a specialized tool that checks your Cross-Origin Resource Sharing settings to ensure they are secure and correctly configured to prevent unauthorized domain access.

How do I use this skill with Claude?

Simply ask Claude to 'validate CORS policy' or 'check CORS headers for [URL]' and it will analyze the configuration using the validator plugin.

Why is CORS validation important?

Proper CORS settings prevent malicious websites from making unauthorized requests to your API, protecting user data and preventing CSRF-related exploits.

Does it work with local configuration files?

Yes, you can provide paths to local JSON policy files or source code, and the skill will analyze them against security best practices.

Can it detect security vulnerabilities?

Yes, it identifies common issues like overly permissive wildcards, insecure credential handling, and missing headers that could expose sensitive data.

CORS Policy Validator

Name: CORS Policy Validator
Author: BbgnsurfTech

byBbgnsurfTech

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セキュリティとテスト

Analyzes Cross-Origin Resource Sharing configurations to identify security vulnerabilities and ensure compliant implementation.

The CORS Policy Validator skill enables Claude to automatically audit and validate CORS configurations for web applications and APIs. By analyzing policy files or fetching live headers from endpoints, this skill detects misconfigurations—such as overly permissive origins or insecure credential settings—that could lead to unauthorized data access. It serves as a specialized security assistant, providing developers with actionable reports and best practices to harden their cross-origin communication against common web attacks and ensure production-ready security standards.

主な機能

01Detailed vulnerability reporting with remediation suggestions

02Automated CORS header analysis for live API endpoints

03Identification of permissive wildcard origins and insecure configurations

04Validation against industry-standard security best practices

053 GitHub stars

06Security auditing for JSON-based CORS policy files

ユースケース

01Auditing API security before deploying to production environments

02Verifying that third-party integrations follow strict security protocols

03Troubleshooting 'CORS error' issues in frontend-backend communication

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add bbgnsurftech/claude-skills-collection cors-policy-validator

For use in Claude.ai and ChatGPT

Download Skill