Extending System Information modal content

gregor-tusar-sowa · March 19, 2026, 1:57pm

Hi,
I would like to add some infomration into the System Information modal, that is displayed when you click on the top-left Umbraco icon in the Backoffice:

I would like to add my solution build number or docker image tag.
What is the best way to acheive this?

Should I reimplement the InformationServerController or TroubleshootingServerController to add this info?

I couldn’t find anything in the docs about it so that’s why I’m asking.

Umbraco v17

Steffen_HK · March 19, 2026, 2:57pm

Perhaps you could do some digging into the InformationServerController and see if anything can be extended?

github.com/umbraco/Umbraco-CMS

src/Umbraco.Cms.Api.Management/Controllers/Server/InformationServerController.cs

main

using Asp.Versioning;
using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.Mvc;
using Umbraco.Cms.Api.Management.ViewModels.Server;
using Umbraco.Cms.Core.Mapping;
using Umbraco.Cms.Core.Services;

namespace Umbraco.Cms.Api.Management.Controllers.Server;

/// <summary>
/// API controller that provides information about the server's status and configuration.
/// </summary>
[ApiVersion("1.0")]
public class InformationServerController : ServerControllerBase
{
    private readonly IServerInformationService _serverInformationService;
    private readonly IUmbracoMapper _umbracoMapper;

    /// <summary>
    /// Initializes a new instance of the <see cref="InformationServerController"/> class, which provides server information endpoints for the Umbraco management API.

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BishalTimalsina12 · March 19, 2026, 3:11pm

hey @gregor-tusar-sowa and @Steffen_HK

After digging into the core code, here’s what I found:

The extensible path is ISystemTroubleshootingInformationService not the controllers. Both InformationServerController and TroubleshootingServerController are thin wrappers that just call a service and map the result, so they’re not the right place to extend.

To add custom keys (e.g. solution build number, Docker image tag) to the System Information modal without touching core, implement a decorator/wrapper around ISystemTroubleshootingInformationService:

public class CustomTroubleshootingInformationService : ISystemTroubleshootingInformationService
{
    private readonly ISystemTroubleshootingInformationService _inner;

    public CustomTroubleshootingInformationService(ISystemTroubleshootingInformationService inner)
        => _inner = inner;

    public IDictionary<string, string> GetTroubleshootingInformation()
    {
        var items = _inner.GetTroubleshootingInformation();
        items["Solution Build Number"] = "your-value-here";
        items["Docker Image Tag"] = "your-value-here";
        return items;
    }
}

Then register it in your Composer after Umbraco’s registration so it replaces the default:

builder.Services.AddUnique<ISystemTroubleshootingInformationService, CustomTroubleshootingInformationService>();

Your custom keys will appear under the “Server Troubleshooting” block in the existing modal no backoffice or core changes needed.

Note: if you specifically need the fields under “Server Information” (alongside Version/Runtime mode), that section has a fixed shape and would require core changes to ServerInformation, ServerInformationResponseModel,

/path : Umbraco-CMS/src/Umbraco.Web.UI.Client/src/packages/sysinfo/components/sysinfo.element.ts at main · umbraco/Umbraco-CMS · GitHub

Hope this helps

/Bishal