Choosing · checked Oct 29, 2026, re-checked monthly
Shopper Zero or AI Store Shopper?
Both are worth knowing about. AI Store Shopper: A $149 one-time check in which an AI buying agent in a real browser walks your public storefront as a guest (find a product through navigation links, read price, stock and options, add one item to the cart, reach the checkout page and stop) and grades four areas with a fix for each failure. [src: aistoreshopper.com; checked 29 Oct 2026] Shopper Zero: A mystery shopper for AI assistants: an AI shopper asks a US Shopify store what buyers ask and tries to buy, on the routes assistants use, and shows the owner where the sale was lost. Below are both prices, what each one does, and where each one wins, so you can decide without a sales call.
Stelar Digital LLC, Roseville, California (founder Robert Dainowski; 'one human, one AI, building in the open') · Early September 2026: the stork.ai listing carries a 'shipped Sep 6, 2026' stamp and Product Hunt shows 'Launched 2mo ago' on 29 Oct 2026; the terms are effective 2 Sep 2026 and the rubric v0.4 is dated 24 Aug 2026. The vendor site itself states no launch date. [src: stork.ai, producthunt.com/posts/1242214, aistoreshopper.com/titan/terms, aistoreshopper.com/titan/rubric; checked 29 Oct 2026]
AI Store Shopper
- Free scan: $0. About 60 seconds, no signup or email: bot access, findable within 3 hops, product data readable, overall letter grade. [src: aistoreshopper.com; checked 29 Oct 2026]
- Full check: $149 one-time (Stripe checkout). One automated, point-in-time walk; letter grades A-F for Blocking & bot access, Findable, Readable, Buyable; each finding pass/fail with what the agent tried and what happened; a fix for each break written for a developer or theme app; full walk log; report stamped with scan date and rubric version; up to three free rechecks within 45 days; first 30 days of the Watch included; full refund if the walk cannot complete or the report was materially wrong (terms clause 7). [src: aistoreshopper.com, aistoreshopper.com/titan/terms; checked 29 Oct 2026]
- The Watch: $29.99/month after the included first 30 days. One scheduled re-walk per store per week with an alert when a change breaks the buying path; up to four on-demand rechecks a month; tied to the one store attested at checkout; cancel anytime from the link in the report or receipt email, which opens a Stripe billing page; cancellation takes effect at the end of the paid period. [src: aistoreshopper.com, aistoreshopper.com/titan/terms clause 8; checked 29 Oct 2026]
zer0xception · October 2026
Shopper Zero
- Agent Test: $149, one time. Ten tasks, each run twice; the replay of every lost sale; the fixes in order; the buyer’s questions on every route; the Black Friday pre-flight; a free re-check within 14 days; the report the same day.
- Agent Watch: $99 a month per store. The same ten tasks every Monday, compared with the week before, with an email only when something gets worse. Cancel online at any time in two clicks; it runs to the end of the month paid for.
What each one does
| AI Store Shopper | Shopper Zero | |
|---|---|---|
| Checks set-up files and data | Yes | Yes |
| Drives a real browser | Yes | Yes |
| Adds to cart | Yes | Yes |
| Reaches checkout | Yes | Yes |
| Pays | No | No |
| Asks about delivery and returns | No | Delivery, returns, contact and discount, asked on seven routes |
| Re-tests every week | Yes | With Agent Watch, $99 a month |
| Replays with screenshots | No | Step-by-step screenshots, with the spot a sale was lost |
| Routes it covers | Storefront pages in a real browser: home page, navigation or collection links, product page, cart, checkout page (never types into search boxes or forms) [src: aistoreshopper.com; checked 29 Oct 2026], robots.txt (ClaudeBot, PerplexityBot, OAI-SearchBot rules), sitemap.xml, llms.txt presence [src: aistoreshopper.com/titan/rubric; checked 29 Oct 2026], UCP: one read-only GET to /.well-known/ucp and, if a manifest names an MCP endpoint, one GET recording the status code only; never an MCP call, handshake or transaction [src: aistoreshopper.com/titan/rubric; checked 29 Oct 2026], Not covered: WebMCP, agents.md (pointer only), search, shipping, returns, contact, discounts, policy pages, payment, account creation [src: aistoreshopper.com/titan/rubric; checked 29 Oct 2026] | Your storefront pages in a real browser, plus llms.txt, agents.md, your UCP profile, WebMCP and your store’s own agent connection, read without buying |
Where AI Store Shopper wins
- Monitoring is about a third of the price: the Watch is $29.99/month, with the first 30 days included in the $149, against Agent Watch at $99/month. [src: aistoreshopper.com, titan/terms clause 8; checked 29 Oct 2026]
- More free re-checks for longer: up to three free rechecks within 45 days, and four on-demand rechecks a month under the Watch, against one free re-check within 14 days. [src: aistoreshopper.com, titan/terms clause 8; checked 29 Oct 2026]
- Works on any platform (Shopify, WooCommerce, Wix, Squarespace, BigCommerce); Shopper Zero is Shopify stores first. [src: aistoreshopper.com, producthunt.com/posts/1242214; checked 29 Oct 2026]
- A written refund promise: full refund of the $149 if the walk cannot complete or a finding was materially wrong; Shopper Zero publishes no refund terms. [src: aistoreshopper.com/titan/terms clause 7; checked 29 Oct 2026]
- A fully public, versioned scoring rubric (v0.4: every test, its points and pass criteria) with letter grades and a free 60-second scan with no signup; Shopper Zero has no public rubric and is not a score. [src: aistoreshopper.com/titan/rubric; checked 29 Oct 2026]
- Fully automated, so there is no human-review queue or stated daily cap; Shopper Zero's human check limits it to 20 tests a day. [src: aistoreshopper.com (walk 'already ran exactly as your store is today'); checked 29 Oct 2026]
- Checks named AI bots in robots.txt (ClaudeBot, PerplexityBot, OAI-SearchBot) and measures add-to-cart and checkout confirmation latency with pass tiers at 2 s and 8 s; Shopper Zero's pre-flight checks robots.txt but does not publish named-bot or latency checks. [src: aistoreshopper.com/titan/rubric; checked 29 Oct 2026]
Where Shopper Zero does more
- Ten tasks written from the store's own products, each run twice, against one walk of one product (one item, add to cart, reach checkout). [src: aistoreshopper.com FAQ ('adds one item to a cart, and stops at checkout'); checked 29 Oct 2026]
- Step-by-step replays with the exact spot a sale was lost; AI Store Shopper gives a text walk log and mentions no screenshots or video. [src: aistoreshopper.com; checked 29 Oct 2026]
- Asks the buyer's questions (delivery, returns, contact, discount) on seven routes; the rubric states it does not test shipping, returns, contact, discounts, policy pages or search. [src: aistoreshopper.com/titan/rubric; checked 29 Oct 2026]
- Checks the store's agent connection plainly and by policy name; theirs is one GET to /.well-known/ucp and one status-code GET to the MCP endpoint, never a call. [src: aistoreshopper.com/titan/rubric; checked 29 Oct 2026]
- Agent Watch re-runs all ten tasks each Monday with a 'what changed since last week' comparison; the Watch re-walks the single path weekly. [src: aistoreshopper.com; checked 29 Oct 2026]
- Fixes ranked by how many tasks they stopped, plus 'Copy for your developer' and a Black Friday pre-flight with a cart.js fee check; theirs gives one fix per failed test with no cross-task ranking. [src: aistoreshopper.com; checked 29 Oct 2026]
- A person approves every report; their client report carries 'not yet independently reviewed by a second reviewer' until someone signs off. [src: aistoreshopper.com/titan/rubric; checked 29 Oct 2026]
- Stated screenshot retention (deleted after 90 days); their terms state no retention period for walk logs and the privacy policy does not mention the product. [src: aistoreshopper.com/titan/terms, stelardigital.com/privacy; checked 29 Oct 2026]
Who AI Store Shopper suits. A US merchant on any platform who wants a cheap automated weekly yes-or-no that one product can still be found, added to the cart and brought to the checkout page, with a public rubric and a refund promise.
Who Shopper Zero suits. A US Shopify store that wants to know, with a replay, whether an AI assistant can actually buy from it before Black Friday, and what to fix first.
Reviews: No public reviews: Product Hunt shows 1 upvote and 'No reviews yet'; the vendor site shows no testimonials or customer count. Sister Shopify app Aivis (launched 30 Jul 2026, free plan plus Aivis Pro at about $12/month shown as INR 1,141.70) has 0 reviews. [src: producthunt.com/posts/1242214, aistoreshopper.com, apps.shopify.com/agent-sales-command; checked 29 Oct 2026] Shopper Zero launched in October 2026 and has no public reviews yet. Not verified: Exact launch date: 6 Sep 2026 per the stork.ai stamp; the vendor site says only '2026'. Report delivery time: not published anywhere on the site or terms. Recheck count: the home page says up to three free rechecks within 45 days, the terms say four on-demand rechecks a month under the Watch, stork.ai says 'a free re-check'; not reconciled by the vendor. Whether screenshots are captured during the walk: the site says 'every step logged' and 'full walk log' only. Retention of walk logs and reports: not stated in the terms; the Stelar Digital privacy policy (25 Aug 2026) does not mention AI Store Shopper. Customer count: none published. Notes from mid-October said the founder offered free walks on the Shopify Community (3 Sep 2026 thread); a 29 Oct search did not resurface that thread.
Our limits, stated plainly
- Shopify stores selling to US customers first. Other platforms are read for the buyer’s questions but not yet sold to.
- The shopper does not use WebMCP or UCP to buy; it walks the store’s pages the way a browsing assistant does, and reads the agent routes without buying through them.
- Results are not a score out of 100. They are tasks completed, lost, or not counted.
- Screenshots are deleted 90 days after each report.
- Launched in October 2026; no public reviews yet.
Sources, checked Oct 29, 2026: https://aistoreshopper.com, https://aistoreshopper.com/titan/rubric, https://aistoreshopper.com/titan/terms, https://aistoreshopper.com/titan/setup, https://stelardigital.com/privacy, https://www.producthunt.com/posts/1242214, https://www.stork.ai/en/ai-store-shopper, https://apps.shopify.com/agent-sales-command. Prices are from the maker’s own pages or App Store listing and can change; tell us at hello@shopperzero.com if one is out of date and we will fix it within a week.