cors-debugging-specialist
CommunityRapidly diagnose and fix CORS failures
AuthorWhaleylaw
Version1.0.0
Installs0
System Documentation
What problem does it solve?
This Skill helps engineers identify and resolve cross-origin resource sharing (CORS) failures that block browser requests, including missing or misconfigured Access-Control headers, failing preflight OPTIONS responses, and credential-related errors.
Core Features & Use Cases
- Guided Troubleshooting: Step-by-step inspection of browser console messages, network preflight checks, and header mismatches.
- Backend Configuration Examples: Concrete configuration snippets for Express, FastAPI, and Django to set origins, methods, headers, credentials, and preflight responses.
- Frontend Guidance & Testing: Advice for fetch/axios credential handling, curl-based preflight testing, and CDN/proxy considerations for origin detection.
- Use Case: Reproduce a blocked API call from a production frontend, verify preflight responses, and update server or proxy configuration to return the correct Access-Control-* headers.
Quick Start
Reproduce the failing browser request, capture the request and response headers (including any OPTIONS preflight), and share them for targeted diagnosis.
Dependency Matrix
Required Modules
None requiredComponents
Standard package💻 Claude Code Installation
Recommended: Let Claude install automatically. Simply copy and paste the text below to Claude Code.
Please help me install this Skill: Name: cors-debugging-specialist Download link: https://github.com/Whaleylaw/llm-lawyer/archive/main.zip#cors-debugging-specialist Please download this .zip file, extract it, and install it in the .claude/skills/ directory.
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