ln-773-cors-configurator

Configure environment-aware CORS policies for ASP.NET Core and FastAPI web APIs.

Updated Mar 14, 2026

Search Tags:#security #fastapi #middleware #cors #aspnetcore #origins #cors-config

Ready to run

npx skills add https://github.com/0xtaoist/taogate --skill ln-773-cors-configurator-0xtaoist

💬 Prompt for ChatGPT / Claude Chat▼

Please help me install this Agent Skill.
Skill: ln-773-cors-configurator
Source: https://github.com/0xtaoist/taogate/tree/main/ln-773-cors-configurator
Command: npx skills add https://github.com/0xtaoist/taogate --skill ln-773-cors-configurator-0xtaoist

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

This skill configures Cross-Origin Resource Sharing (CORS) policies in a security-first, environment-aware manner for web APIs, reducing misconfigurations that leak data or block legitimate traffic.

Core Features & Use Cases

Automatic environment-aware policy generation: Detects development vs. production needs and creates appropriate CORS rules.
Framework support: Generates configuration for ASP.NET Core and FastAPI projects with environment-specific origins and settings.
Safe defaults & validation: Enforces no wildcard origins with credentials, idempotent middleware checks, and ready-to-run output files.

Quick Start

Run the ln-773-cors-configurator to generate and apply environment-specific CORS policies for your project.

Frequently Asked Questions about ln-773-cors-configurator

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

FAQPage Schema

How do I configure secure CORS policies for FastAPI and ASP.NET Core?▼

To configure secure CORS policies for FastAPI and ASP.NET Core, use environment-aware middleware generation that auto-detects frontend origins and outputs environment-specific configuration files with safe defaults.

How do I set up environment-aware CORS rules for development and production?▼

Environment-aware CORS rules are set up by detecting development versus production needs, then generating distinct allowed origins, methods, and credentials settings for each environment to prevent data leaks.

Can I use wildcard origins with credentials in my CORS middleware?▼

You cannot use wildcard origins with credentials in CORS middleware. Secure configuration enforces validation that blocks wildcard origins when credentials are allowed, ensuring safe defaults.

Does this CORS configurator support idempotent middleware checks?▼

This CORS configurator supports idempotent middleware checks, verifying existing middleware before applying environment-specific configurations to prevent duplicate entries and ensure safe integration.

What's the best way to auto-detect frontend origins for web API CORS settings?▼

The best way to auto-detect frontend origins for web API CORS settings is using environment-aware policy generation that identifies frontend URLs and outputs ready-to-run app settings or middleware configuration code files.

Why does my CORS configuration block legitimate traffic in production?▼

CORS configuration blocks legitimate traffic in production when rules are too restrictive or misconfigured. Environment-aware policy generation auto-detects valid frontend origins to create appropriate rules that prevent blocking.