Zero-Code External Testing
No SDKs, no Liquid tags, no tracking scripts injected into client themes. Zero negative impact on Core Web Vitals or conversion rates. 100% external headless bots.
100% Non-Invasive
Synthetic Checkout Monitoring for Shopify
Catch Broken Checkouts Before Your Customers Do
100% external, zero-code synthetic checkout monitoring built specifically for the Shopify ecosystem. Test real customer journeys every 15 minutes without slowing down your store.
LIVE SYNTHETIC RUNNER
store.atelier-home.com
RUNS TODAY
1,920
PASS RATE
99.8%
LATENCY
1.24s
PLAYWRIGHT TRACE LOG
PASS→Spawning external headless Chromium context...
✓Navigated to store.atelier-home.com in 340ms
✓DOM click: [data-add-to-cart] resolved successfully
No credit card requiredInstant 60-second store audit14-Day Free TrialZero App InstallRuns Every 15 MinsWhatsApp, Email & Slack Alerts
ARCHITECTURAL DIFFERENCE
Why Legacy Observability Fails on Shopify
Standard uptime monitors only check HTTP status codes. CartSentry tests complete functional buyer journeys — without injecting a single byte of code.
Comparison VectorLegacy Tools (Sentry / Datadog / Pingdom)CartSentry Solution
SDK / Script Overhead
Requires heavy in-store JavaScript that degrades Core Web Vitals and mobile conversion rates.
Zero-Code Monitoring: 100% external headless Chromium workers. Zero app installs, zero theme script tags, and absolutely zero hit on your store's Core Web Vitals.
The “Generalist Uptime” Trap
Returns HTTP 200 “OK” even when Checkout buttons, bundles, or promo codes are completely frozen.
Synthetic E2E Checkout Audits: Simulates actual shopper behaviour—clicking cart triggers, testing drawer sliders, running Shopify Functions coupon logic, and confirming checkout loads.
Checkout Extensibility Clashes
Generates generic 500 server alerts or unreadable low-level minified stack traces.
Actionable Failure Traces: Pinpoints the exact breaking checkout step, failing DOM selector, and dropped network payload with complete visual snapshots.
Pricing & Setup Complexity
Requires $10k–$50k/year enterprise contracts and dedicated DevOps engineering teams.
Predictable, Transparent Pricing: Self-serve plans starting at $99/mo, with agency fleet tiers from ~$20/store. No multi-month sales calls, no annual vendor lock-in.
ENGINEERED FOR SHOPIFY
Continuous Revenue Protection
Everything you need to safeguard high-converting Shopify stores without maintenance overhead.
15-Minute Synthetic Runs
Distributed Playwright worker containers execute every 15 minutes, mimicking a fresh customer without cached cookies. Add to Cart → Coupon → Checkout URL.
Every 15 Minutes
Extension Clash Detection
Instantly flags when Checkout UI Extensions, upsell apps, or custom Shopify Functions freeze checkout inputs or submit buttons after merchant app updates.
Sandbox Isolation
Multi-Channel Alerts
Instant Slack, WhatsApp & Email webhooks deliver failing selectors, browser console stack traces, automated DOM failure screenshots and latency metrics.
Slack • WhatsApp • Email
01
Configure Store URL & Promo
Enter your live Shopify store URL, product variant, and an optional discount code. Select test frequency (every 15 min) and alert webhooks.
$ cartsentry add \
--url store.com/products/hoodie \
--promo "TEST10"
02
Headless Synthetic Runs
Distributed Playwright worker containers spin up headless Chromium instances every 15 minutes, mimicking a fresh customer without cached cookies.
✓ DOM click resolved: 340ms
✓ Drawer Ajax settled: 200ms
✓ Checkout reached: 1,248ms
03
Instant Root-Cause Triage
If an app throws an uncaught JS exception or the checkout DOM freezes, instant Slack, WhatsApp, and Email alerts fire with screenshots and exact error lines.
✗ Coupon Input: Frozen
> Trace: extension-upsell.js:142
⚡ Webhook → #client-alerts
AGENCY FLEET MANAGEMENT
Manage 15–20 Stores from a Single View
Shopify agencies get green/amber/red telemetry across every client store. Click any row to trigger the real-time Incident Diagnostic Flyout.
Agency Fleet Overview (18 Stores Monitored)
Cron: Every 15mClient Store
Live Status
DOM Latency
Showing 8 of 18 connected storesFleet Health: 94.4%
Incident Diagnostic Flyout
TARGET STORE:
Atelier Home (Shopify Plus)
1. Failing Selector / Root-Cause Trace0 ERRORS
All Playwright steps resolved cleanly. [data-add-to-cart] clicked → Promo code TEST10 evaluated → Checkout reached in 1,248ms. 0 console errors.
2. Automated Headless ScreenshotSupabase Storage
Checkout Form & Discount AppliedFull Page DOM Snapshot: 1280x800
3. Exact DOM Latency Timing1,248 ms
Speed is optimal. No customer abandonment risk detected.
TRANSPARENT PRICING
Simple Plans Built for ROI
Protect tens of thousands of dollars in lost checkout revenue for a fraction of a single abandoned cart.
MonthlyAnnual (2 months free)
DTC STORE PROTECTION
Shopify Plus / DTC Brand
For high-volume merchants doing $10k+/day.
$149/ month
or $1,490/year (2 months free)
- 1 Monitored Store
- 15-Minute Synthetic Cron Runs
- Latency Tracking & DOM Screenshots
- Real-time Slack & Email Alerts
- Extension Clash Detection
MOST POPULAR
AGENCY FLEET LICENSE
Shopify Dev Agency
Resell maintenance retainers to 15–20 stores.
$399/ month
~$20/store • $3,990/year (2 months free)
- 15–20 Monitored Stores (Fleet Dashboard)
- 15-Minute Automated Playwright Runs
- Full DOM Traces & Extension Clash Root-Cause
- Slack, WhatsApp & Custom Webhooks
- White-Label Client Incident Reports
- Priority Support & Onboarding Call
ZERO-RISK 14-DAY TRIAL
Protect Your Store Revenue in Under 60 Seconds
Enter your Shopify store URL and work email. Our headless browser bot will run an immediate baseline checkout test and dispatch your full diagnostic report.
No store app install required
Instant baseline Playwright test in 10 seconds
No credit card required
Resell to clients as a $100–$200/mo maintenance retainer
99.8%
Avg Pass Rate
<420ms
Alert Speed
18 stores
Per Agency
FREQUENTLY ASKED QUESTIONS
Everything You Need to Know
Absolutely not. CartSentry runs 100% externally using containerized Playwright workers. We never add a single line of JavaScript, Liquid snippet, or app embed to your store. Your Core Web Vitals and theme performance are completely unaffected.
Our headless Chromium bot simulates a complete customer purchase flow: navigating to a product page, selecting a variant, clicking "Add to Cart", waiting for the Ajax cart drawer to open, applying a promotional coupon code via Shopify Functions, and verifying the checkout URL loads within acceptable latency.
CartSentry runs checks every 15 minutes. The moment a failure is detected, Slack, WhatsApp, and email webhooks fire within seconds. Your alert includes the exact failing DOM selector, JavaScript error stack trace, DOM latency timing, and an automated headless screenshot of the broken state.
Shopify Plus merchants and agencies frequently install Checkout UI Extensions, upsell apps, and custom Shopify Functions. When one of these updates, it can silently clash with another—freezing coupon inputs or breaking submit buttons without any server-side error. CartSentry detects these functional failures that HTTP uptime monitors completely miss.
Yes. The Agency Fleet plan covers 15–20 Shopify stores from a single dashboard. Each store gets its own real-time telemetry row with green/amber/red status badges and DOM latency. Click any row to trigger an instant Incident Diagnostic Flyout with root-cause JS traces and failure screenshots. You can resell this as a $100–$200/mo maintenance retainer to each client.
Yes — 14 days completely free, no credit card required. Sign up with your store URL and work email, and our Playwright bot will run an immediate baseline checkout test within 10 seconds of registration.