A simple dev HTTP/HTTPS proxy for replacing CORS headers.

Core features

• CORS header replacement
• Wildcard host mapping
• HTTPS support with auto-generated certificates
• Response mocking
• Script handler (Lua scripting with JSON support)
• HTTP/HTTPS proxy support
• Static file serving
• Response caching
• Request rewriting

Full documentation can be found on the wiki pages.

Quick Install

You can install the application in one of the following ways:

Homebrew (macOS | Linux)

brew install evg4b/tap/uncors

Scoop (Windows)

scoop bucket add evg4b https://github.com/evg4b/scoop-bucket.git
scoop install evg4b/uncors

NPM (Cross-platform)

# Run as an independent CLI tool
npx -y uncors ...
# Or add as dependency in your package
npm install uncors --save-dev
# yarn add uncors --dev
# pnpm add -D uncors

Docker (Cross-platform)

docker run -p 80:3000 evg4b/uncors --from 'http://local.github.com' --to 'https://github.com'

Stew (Cross-platform)

stew install evg4b/uncors

Or find more installation methods in uncors wiki.

Usage

The following command can be used to start the UNCORS proxy server:

uncors --from 'http://localhost:8080' --to 'https://github.com'

More information about configuration and usage you can find on UNCORS wiki.

Caution

Please be aware that the modification or replacement of CORS headers may introduce potential security vulnerabilities. This tool is specifically engineered to optimize the development and testing workflow and is not intended for use in a production environment or as a remote proxy server. It has not undergone a thorough security review; therefore, caution should be exercised when utilizing it.

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