Microsoft Clarity GTM Template: Why Community Beats Official
Official vs community Microsoft Clarity GTM templates: custom events, Consent Mode v2, sandboxing, maintenance, and when each option makes sense.
8 min readBranislav Mateas
Copy post as Markdown
On this page
Verdict: community wins beyond a basic install
Community Microsoft Clarity GTM templates are better once you need custom events or Consent Mode v2.
The official template is fine for basic installation and custom tags, but it cannot send Clarity events or provide the same consent controls.
Because the community alternatives are still sandboxed, you gain those capabilities without falling back to Custom HTML.
That difference matters whenever you need events such as failed checkout recordings or form-validation errors without adding raw JavaScript to your container.
What a GTM template actually is, stripped to first principles
Before we compare, let's be clear about what we're comparing. A GTM template is not magic. It is a small, sandboxed program that Google runs for you.
"Sandboxed" means the code cannot do whatever it wants. It can only use the permissions the template declares, and Google reviews and limits those permissions. It cannot quietly read cookies it didn't ask for or reach into other tags. That is the whole point.
The alternative most analysts fall back on is a Custom HTML tag. That is raw JavaScript you paste in yourself. It runs with far fewer guardrails.
So the real spectrum is this: a proper sandboxed template on one end, and a Custom HTML script on the other. The official Clarity template and the community ones both sit on the safe, sandboxed end. "Unofficial" here means "not published by Microsoft". It does not mean hacky or unsafe.
Once you see it that way, the question changes. It is not "who made it?" It is "what can this template actually do, and who keeps it working?"
The concrete reason the unofficial template wins: custom events
Here is what the official Microsoft template does. It injects the Clarity base script from clarity.ms, it lets you set a custom tag with a key and value, and it lets you identify a user with clarity("identify", ...).
That's it. That's the whole surface.
There is no field for sending a Clarity event. None.
And that matters the moment you want to do anything interesting. Say I want a Smart Event in Clarity so I can filter session recordings to people who hit a failed checkout, or who triggered a form validation error. That needs clarity("event", ...).
The official template can't send it. So I'm right back to a Custom HTML tag to fire one line of JavaScript. The official template is an installer, not a full API surface.
The community templates expose the event call as a proper field. That is the difference between a tool that does the job and a tool that gets you 60% there and then abandons you.
Update speed, and why Consent Mode v2 tells the story
The second reason is who has an incentive to keep the thing current.
A vendor's own GTM template is usually a low-priority side artifact. It ships when the vendor gets around to it. It is nobody's main job.
A community maintainer ships when the API changes, because that template is the thing they actually care about. It is often the reason their name is out there.
You can see this in practice. Consent Mode v2 support landed in the community templates while the official one still does not implement clarity("consent"). If you run GDPR-compliant tracking in Europe, that is not a small gap. Consent handling is the difference between a clean setup and a legal headache.
So the community options aren't just richer. They tend to be fresher too.
The two community templates worth knowing
There are two I'd point you at, and they solve slightly different problems.
Pick based on whether Clarity is already installed or not.
Markus Baersch's "Microsoft Clarity Events" (github.com/mbaersch/clarity-events). This is a companion tag. It assumes Clarity is already installed, then adds the missing pieces: sending named Clarity events (usable as Smart Events), setting custom tags, upgrading a session so it survives Clarity's daily recording limit (you pass a reason string), and setting consent state for analytics and ad storage.
luratic's all-in-one Clarity template (github.com/luratic/Clarity). This one replaces the base install entirely. It installs Clarity, sends custom events, sets custom tags, and handles Google Consent Mode v2 automatically.
Why the sandbox versus Custom HTML question is really about error handling
Here's the part that convinced me this is worth writing about, and it ties into some notes I keep on GTM error handling.
When you fall back to Custom HTML because the official template can't do events, you are trading a reviewed, limited tag for raw JavaScript that runs in the page. And raw JavaScript can throw.
Think about the GTM page lifecycle for a second. GTM fires three events in order on every page: gtm.js when the container loads, gtm.dom when the page structure is ready, and gtm.load when everything has finished loading. Your tags hang off those moments. If a Custom HTML tag runs a script that throws an error, it can fail loudly at exactly the wrong moment, and depending on how it's written, it can affect what fires after it.
A sandboxed template is much harder to break in that way. It can only call the specific APIs it declared. It can't accidentally reference a variable that doesn't exist yet, or blow up because a third-party script hasn't loaded. The failure modes are smaller because the surface is smaller.
So the community template isn't just more featureful. It is the more robust, review-friendly middle ground. You get the events and consent handling you needed, without dropping to hand-written script that a teammate has to read line by line six months from now.
If you care about maintainability, that matters more than any single feature. A sandboxed template is something a colleague can review in the GTM UI. A wall of Custom HTML is something they have to trust or reverse-engineer.
The honest trade-off I won't hide from you
I'm not going to pretend the community route is free.
A community template depends on a single maintainer. If that person stops updating it, you inherit the template. That is a real risk and you should feel it before you commit.
But look at how bad the worst case actually is. The source is public on GitHub. The templates only call Clarity's public JavaScript API. So if a maintainer disappears and something breaks, your fallback is a short Custom HTML tag calling the same public functions. It is not a rewrite. It is not a rescue mission.
That's a manageable downside. Compare it to the official template's downside, which is that it simply can't do half of what you need today.
The broader lesson: "official" tells you who, not how good
Zoom out, because this isn't really about Clarity.
"Official" tells you who published something. It tells you nothing about how good it is or how well maintained it is. For GTM templates specifically, official usually means "the vendor's minimum viable installer".
So stop asking who made it. Ask two better questions instead. Which API surface does it actually expose? And who has an incentive to keep it current?
And here's the best part: for GTM templates you can just check. The source is public, it's short, and it settles the argument in about two minutes. Read it before you install it. That habit alone will make you a better analyst.
So how should you actually decide?
Let me be fair to the official template, because I don't want you churning your setup for no reason.
If all you need is Clarity installed plus a custom tag, the official one is genuinely fine. Don't rip out something that works.
The moment your needs grow, switch.
Need only to install Clarity and set a custom tag? Stay on the official Microsoft template. It's simple and it does that job.
Need custom events for Smart Events, Consent Mode v2, or session upgrades? Go community.
Already running Clarity and just need the extra API calls? Use Baersch's events companion tag.
Starting fresh and want one tag to do everything, consent included? Use luratic's all-in-one.
Before you commit to any community template, open its GitHub and check the maintainer's commit history. Recent, steady updates are the signal you want.
A quick word before you go
My instinct was wrong here, and I'm glad someone corrected it. Official felt safer, and it turned out to be the less capable and less current option for anything beyond a basic install.
If you're thinking about how AI search reads your site too, structured, well-maintained tracking is part of the same discipline. I wrote about measuring what actually matters in my post on KPIs for AI optimisation, if that's your world.
If you're wrestling with a Clarity setup, a messy GTM container, or tags that throw at the wrong moment, reach out. The links are in the footer at bmateas.com/contact.
