> ## Documentation Index
> Fetch the complete documentation index at: https://interceptor-docs.requestly.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Create

> Learn how to create and organize files and endpoints in File Server.

File Server lets you upload JSON, CSS, and JS files and use them in your application to test features, serve APIs, or override assets without touching production code.

> [card] [Create JSON File](https://interceptor-docs.requestly.com/mock-server/create/create-mock-api.md)
>
> Upload a JSON File and use it as an API to simulate server responses. Define request and response behaviours to test without a backend.

> [card] [Create CSS/JS File](https://interceptor-docs.requestly.com/mock-server/create/create-new-mock-file.md)
>
> Upload CSS/JS files and use them in your application to test UI changes, inject features, or override production assets

> [card] [File Collection](https://interceptor-docs.requestly.com/mock-server/create/mock-collection.md)
>
> Group related files into collections to keep File Server organized. The folder structure you create inside a collection is reflected in the file URLs.


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