Hi Luke,

You could use the UmbracoHelper to be able to use the ContentAtRoot Method, by injecting the umbracoHelperAccessor into your controller via it's constructor.

An example snippet that you could use:

  using using System;
  using Umbraco.Cms.Core.Models.PublishedContent;
  using Umbraco.Cms.Web.Common.Controllers;
  using Umbraco.Core.Models; 
  using Umbraco.Web.Mvc;     

namespace MyWebsite.Core.Controller

public class InsightsController : UmbracoApiController
{

    private readonly IUmbracoHelperAccessor _umbracoHelperAccessor;

    public InsightsController(IUmbracoHelperAccessor umbracoHelperAccessor){
        _umbracoHelperAccessor = umbracoHelperAccessor;
    }

    public string InsightsData()  
    {
        if(_umbracoHelperAccessor.TryGetUmbracoHelper(out var umbracoHelper))
        {
            var articles = umbracoHelper.ContentAtRoot().FirstOrDefault().ChildrenOfType("article").Where(x => x.IsVisible());
        // return some stuff;
        }  

    // return some stuff;

    }
  }
}

Hope this helped!

Kind regards,

Corné Hoskam