奇代（代理工具）is a free Chrome add-on developed by qianhongchangclass. It falls under the category of Browsers and is specifically categorized as an Add-ons & Tools subcategory. The main purpose of this extension tool is to provide developers with a convenient way to perform local debugging and interface proxy work in a flexible, fast, and effective manner.

The tool allows users to specify the "source file" which represents the URL of the request initiated in the current site's regular mode. This can be a CSS, JS, HTML address, or an interface address. Users can then define the "replacement" file which represents the desired file address that will replace the current source file address.

Multiple sets of configurations can be added simultaneously, making it easy for users to manage their commonly used proxies. Each set can contain multiple configurations.

Overall, 奇代（代理工具）provides developers with a versatile and efficient solution for local debugging and interface proxy work in their development process.