Is Your Home Assistant Haunted? Meet Spook, Your Smart Home’s Ghost Hunter

Updated November 2026

There is something wonderfully ironic about a smart home. You can have more than a hundred connected devices, dozens of automations, intelligent lighting, energy monitoring, and a dashboard that looks like it belongs in a spaceship. Everything appears to be working perfectly.

Then, one day, you rename a light, remove an old sensor, or replace a Zigbee device. Your dashboard still looks beautiful, but somewhere in the background, an automation is desperately trying to control something that no longer exists.

Congratulations. You might have a ghost in your smart home.

Fortunately, there is a friendly ghost designed to help: Spook for Home Assistant.

Spook is a powerful custom integration created by Franck Nijhof, better known as Frenck. It extends Home Assistant with additional actions, entities, helpers, and diagnostic capabilities. It can also identify certain configuration problems and report them through Home Assistant’s Repairs dashboard.

If you last looked at Spook a couple of years ago, it is worth taking another look. This is no longer just a curious little addition for Home Assistant enthusiasts. It has grown into a substantial toolbox that can help you manage and maintain a more complex smart home.

Let’s invite the ghost inside. Just remember to check the door sensor afterward.

What Exactly Is Spook?

Spook is a third-party integration that adds functionality to Home Assistant that doesn’t necessarily belong in the core platform.

Think of Home Assistant as the operating system for your smart home. It already handles devices, integrations, automations, scripts, scenes, and entities. Spook extends that toolbox with additional capabilities.

Its functionality falls into several broad categories:

• Repairs and diagnostics: Identifies certain potential configuration problems and provides guidance on resolving them.
• Additional actions: Adds new ways to manage and control parts of Home Assistant from automations and scripts.
• Enhanced integrations: Extends selected existing integrations with additional functionality.
• Devices and entities: Exposes additional information or controls that can be useful in dashboards and automations.
• Helpers and utilities: Provides additional tools for working with existing entities and data.

The important distinction is that Spook doesn’t replace Home Assistant. It builds on top of it.

You continue using the familiar automation editor, entity registry, dashboards, and developer tools. When Spook adds something, you can use it alongside the functionality you already know.

For the full feature list, consult the official Spook documentation.

Installing Spook with HACS

Before installing anything, make sure you have a working Home Assistant backup. Installing a custom integration is usually straightforward, but having a recovery plan is always sensible.

You will need:

• A functioning Home Assistant installation.
• Home Assistant Community Store (HACS).
• A Home Assistant version supported by the current Spook release.
• Access to restart Home Assistant.

The minimum supported Home Assistant version can change, so check the current Spook installation instructions before proceeding.

Step 1: Install the integration

1. Open HACS from the Home Assistant sidebar.
2. Search for Spook.
3. Open its repository page and select the download or installation option.
4. Follow the prompts to install the integration.

Step 2: Restart Home Assistant

Restart Home Assistant so it can load the newly installed integration.

Step 3: Add Spook

Navigate to Settings → Devices & services → Add integration.

Search for Spook, select it, and follow the setup instructions. Review and accept the applicable licence terms before completing the setup.

Once installation is complete, Spook can begin providing its additional functionality.

You don’t need to rewrite your existing automations or create a special Spook dashboard before getting started.

Hunting for Ghosts in Your Automations

One of Spook’s most useful capabilities is reporting certain problems involving entities referenced by automations and other configuration elements.

Imagine that you have an automation that turns on the hallway lights when a motion sensor detects movement.

Later, you replace the sensor. The old entity disappears, and the new one gets a different entity ID. Your automation may still reference the old ID.

The result? Your hallway automation might stop working as expected.

Without diagnostic help, you may spend an evening checking motion sensors, Zigbee connectivity, light groups, and automation traces. The actual problem could be nothing more complicated than an outdated entity reference.

Spook can detect certain problems of this kind and create an issue in Home Assistant’s Repairs dashboard.

When a repair is available, open:

Settings → System → Repairs

Review the issue and follow the suggested steps. Depending on the problem, Spook may provide information about what went wrong and, where supported, an option to help fix it.

However, don’t assume every broken automation will automatically be detected. Spook’s checks cover particular situations, not every possible logical error, unavailable device, or failed action.

For example, an automation can reference valid entities and still have an incorrect condition that prevents it from running.

Spook is a useful diagnostic assistant, not a replacement for automation traces and sensible testing.

More Than a Ghost Detector

Finding broken references is only one part of the story.

Spook also adds and extends actions that you can use in Home Assistant automations and scripts. Depending on the feature, these can help you manage entities, devices, areas, and other aspects of your installation.

It also exposes additional entities and information for selected integrations.

This is where Spook becomes particularly interesting for experienced Home Assistant users. Instead of thinking of it as a single-purpose diagnostic tool, think of it as an additional collection of building blocks.

To explore the available functionality:

1. Open Developer tools in Home Assistant.
2. Navigate to the actions interface.
3. Search for actions containing Spook in their descriptions or identifying information.
4. Review the available parameters and the corresponding official documentation.

The exact list depends on the installed version. Avoid copying examples from an old article without checking that the relevant action still exists and behaves as expected.

Spook’s documentation organises its features into categories, making it easier to explore specific capabilities without reading through the entire project.

Start with the feature overview and then look up the individual actions you want to use.

A Practical Example: Get Notified When Something Needs Attention

Spook’s diagnostic findings are most useful when they become part of your normal maintenance routine.

Home Assistant already provides a Repairs dashboard, so you don’t need to invent another diagnostic system or create an automation that repeatedly checks the same problem.

Instead, make checking Repairs part of a weekly smart home health check.

For example, the following automation sends you a reminder every Sunday morning to review the Repairs dashboard. It uses standard Home Assistant functionality and does not require a fictional Spook-specific service call.

alias: Weekly Home Assistant Health Check
description: Remind me to review Home Assistant Repairs
triggers:
  - trigger: time
    at: "10:00:00"
conditions:
  - condition: time
    weekday:
      - sun
actions:
  - action: persistent_notification.create
    data:
      title: "Smart Home Health Check"
      message: >-
        Time to review Settings > System > Repairs,
        check recent automation traces, and verify
        that important devices are working.
      notification_id: weekly_health_check
mode: single

This creates a persistent notification at 10:00 every Sunday. The notification stays available until dismissed or replaced, making it useful if you don’t open Home Assistant immediately.

You can adapt the schedule or replace the persistent notification with a mobile notification using your existing notification setup.

Important: This automation is a reminder, not an automatic report of Spook findings. It does not read the Repairs dashboard or determine whether a repair exists.

That distinction matters. A reliable maintenance routine is better than an impressive-looking automation that claims to monitor something it cannot actually access.

What Spook Cannot Fix for You

It is tempting to install an integration that promises to find problems and assume your maintenance work is finished.

Unfortunately, ghosts aren’t the only things that can hide in a smart home.

Spook cannot guarantee that every automation is logically correct, that every device is available, or that your Zigbee network is healthy. It doesn’t replace backups, updates, monitoring, or troubleshooting.

A few sensible habits will help:

• Review repairs before dismissing them. Understand what the warning means and whether the suggested fix is appropriate.
• Check automation traces. These help explain why an automation ran, failed, or skipped an action.
• Keep backups. Diagnostic tools cannot restore configuration that was never backed up.
• Update carefully. Check compatibility before updating custom integrations, especially in a complex installation.
• Test important automations. Verify that lighting, heating, leak detection, and other essential functions behave as expected.

Also remember that Spook is an independent custom integration. It is not affiliated with, endorsed by, or supported by the Home Assistant project, and it is supplied without warranty.

As with any third-party code, you should review the project’s documentation, maintenance status, and compatibility before installing or updating it.

Is Spook Worth Installing in 2026?

If your Home Assistant installation consists of three smart bulbs and a motion sensor, Spook may not transform your daily life.

If you have dozens or hundreds of entities, integrations from multiple manufacturers, and automations that have evolved over several years, the additional diagnostic capabilities and toolbox features become more attractive.

The real benefit is not that Spook magically prevents every problem. It is that it can make certain problems easier to discover and gives you additional tools for managing your installation.

That is especially valuable in a mature smart home, where a small configuration change can have unexpected consequences elsewhere.

My recommendation is to start with its diagnostic capabilities, explore the available actions, and introduce additional functionality only when you have a clear use for it.

And remember: if your hallway lights stop working at midnight, don’t immediately blame the ghost.

Check the automation trace first.

Final Thoughts

Home Assistant is incredibly flexible, but flexibility comes with responsibility. As your installation grows, keeping track of every entity, integration, and automation becomes increasingly difficult.

Spook offers a useful set of additional tools for tackling that complexity. Its repair reports can help uncover certain hidden configuration problems, while its actions, entities, and helpers extend what you can do with Home Assistant.

It won’t replace good configuration practices, regular backups, or a bit of troubleshooting. But it can be a valuable addition to your smart home toolbox.

And really, if your smart home is going to have ghosts, they might as well be useful ones.

Useful links

• Spook on GitHub
• Official Spook documentation
• Spook installation guide
• Spook feature overview
• Home Assistant documentation