---
title: Quickstart
description: Install Delivery API Inspector and open the API tab on a document.
seo:
  image: /og/quickstart.png
---

1. **Install the package**

    ```sh
    dotnet add package TheBuilder.DeliveryApiInspector
    ```

    The package has no tables and no migrations. It needs the Delivery API in `Program.cs`, which most headless sites already have:

    ```cs Program.cs
    builder.CreateUmbracoBuilder()
        .AddBackOffice()
        .AddWebsite()
        .AddDeliveryApi()
        .AddComposers()
        .Build();
    ```

2. **Open a document**

    Start the site, sign in as an administrator, and open any document that has been saved. The **API** tab is next to Content and Info. It shows the draft, as a frontend with `Preview: true` and the API key would get it.

3. **Let other developers in**

    Administrators see the tab. To give it to another group, open it under **Users**, **User groups**, and turn on **View Delivery API output** in its default permissions.

    See [Access](/access) for permissions on part of the tree, and for naming groups in appsettings instead.

## Next

- [Reading a response](/reading-a-response): search, levels, `expand` and `fields`.
- [Versions and changes](/versions-and-changes): draft, published, and what a publish would change.
- [Requests](/requests): the request above the tree, and copying it as curl or `fetch`.
- [Configuration](/configuration): every setting.