Shopify Apps That Use Sidekick: Which Categories Are Wiring In First

If you've read our explainer on Sidekick app extensions, the obvious next question is the practical one: which apps actually use this yet, and how would I know?

The honest answer is that it's early. Sidekick app extensions are in a selective developer preview as of this writing, so there isn't a long public roster of named apps to rank. What there is, though, is a clear pattern in which kinds of apps fit the surface and are wiring in first. That pattern is more useful to you than a list that will be stale in a month, because it tells you what to expect from your own stack.

Why some apps fit Sidekick and others don't

A Sidekick data extension is worth building when a question a merchant asks in plain language maps onto data the app already holds. That sounds obvious, but it rules a lot of apps out.

The apps that fit share three traits. They hold data a merchant routinely asks about out loud. That data is structured enough to answer a specific question, not just render a dashboard. And the genuinely useful response is a read: an answer, a number, a ranking, a reason. Apps whose whole value is "here's where you stand" or "here's why" are the natural early adopters. Apps whose value is a bulk write or a long visual workflow have less to gain from a one-line conversational answer.

The categories wiring in first

A few app categories line up almost perfectly with that test.

Support and helpdesk. "How many open tickets do I have about shipping delays" is a plain-language question with a precise answer living inside the support app. Exactly the shape Sidekick rewards.

Reviews and user content. "What's my lowest-rated product this month" or "show me recent one-star reviews mentioning sizing" reads cleanly from a reviews app's data and saves a merchant a trip into another tab.

Email and marketing. "Which campaign drove the most revenue last month" is the kind of answer a merchant wants mid-thought, without opening the marketing app and building a report.

Inventory and operations. "What's about to go out of stock" or "which SKUs haven't sold in 60 days" are operational reads that an ops app can answer in a sentence.

Analytics. Any app whose core output is a metric is a candidate, because a metric is the easiest thing in the world to hand back inside a conversation.

AI-search readiness. This is the category we build in, so we'll be specific about it below rather than wave at it.

None of these is a guess about a particular named competitor. It's the structural reason a category fits, which is what tells you whether the apps in your stack are likely to wire in.

What an AI-readiness app looks like inside Sidekick

We ship a Sidekick data extension for AgentReady, so we can show the real shape rather than describe a hypothetical. It registers five read-only tools, and every one answers a question a merchant actually asks:

• "Why am I not showing up in AI search for this product?" returns the specific catalog data gaps holding a product back, with a plain reason for each.
• "Where do I rank in Shopify's Global Catalog?" returns, per tracked buyer-intent query, whether the store surfaces and at what position.
• "How AI-ready is my store?" returns the store's current readiness score and grade, plus the top fixes.
• "Did my fix actually work?" returns whether recent catalog changes have been absorbed and whether rankings moved.
• "What searches should I be tracking?" suggests buyer-intent queries derived from the store's own catalog.

Every one of those is read-only. To actually change a product's catalog data, the merchant uses a separate action that opens AgentReady's remediation flow, where each change is proposed first and only written after the merchant confirms it. That split (Sidekick answers, the merchant confirms any change) is Shopify's model, and we cover the builder side of it in building for Shopify Sidekick.

How to tell if an app you've installed already has one

You don't have to wait for an announcement. Ask Sidekick a question only that app could answer. If your reviews app ships an extension, "what's my lowest-rated product this month" comes back from the app's data inside the conversation. If your readiness app ships one, "why am I not showing up in AI search" gets a real answer instead of a generic one. When Sidekick can answer it in-flow, the extension is live. When it can't, the app hasn't wired in yet.

It's also worth checking each app's listing and changelog, since makers tend to announce Sidekick support the moment they have it. An app actively building for Sidekick and for the Global Catalog is an app betting on where commerce is going. One that's silent on both may be worth a second look.

The takeaway

The roster of apps using Sidekick is short today and will be long in a year. Rather than chase a list, watch the categories: support, reviews, marketing, inventory, analytics, and AI-readiness are wiring in first because their value is a clean, conversational read. And the single most useful thing you can do in the meantime is make sure your own store is legible enough for any of these answers to be worth having. Our free AI-readiness checker shows how an agent reads your store today, in about a minute and without an install.