PylonMon
Checkout monitoring

Make sure your revenue
never stops.

Automatically test your entire checkout flow — from cart to confirmation — so you catch issues before your customers do.

No credit card required.

Checkout flow successfulChecked 2 minutes ago
✓Add to cart
✓View cart
✓Enter shipping
✓Enter payment
✓Complete purchase
All systems go!
Keep
your sales
flowing!
Buddy, the PylonMon mascot
Test real user flowsSimulate complete checkouts just like your customers.
Get instant alertsBe the first to know when something breaks.
Protect your revenueMinimize downtime and lost sales.
Built for any stackWorks with Shopify, WooCommerce, custom platforms, and more.
Try an example · no signup needed

The site is up.
But can a customer check out?

A successful HTTP response is only part of the story. Switch between these example runs to see what a browser journey can reveal.

What the monitor sees
Website responseHTTP 200 · OK
  1. 1. Open the storePassed · 420 ms
  2. 2. Sign inPassed · 680 ms
  3. 3. Add to cartPassed · 310 ms
  4. 4. Confirm checkoutFailed · 15 s
Checkout confirmation never appeared

The page loaded, but the expected “Order confirmed” text was missing. This is the step your team would investigate.

Illustrative demo with sample timings. Switching scenarios does not run a check or send an alert.

What the browser saw · illustrated
● ● ●   northstar.example / checkout
NORTHSTAR GOODS
The everyday carryCanvas tote · quantity 1Example order · $28.00
We couldn’t complete your order. Please try again.
A useful starting point for your team

Failed step + error + screenshot. See what broke before digging through logs.

From example to your store

Start with one important flow.

You know what a successful checkout looks like. Describe those steps, test the draft, then put it on a schedule.

  1. Choose a safe test flow

    Use a dedicated test account. Stop at the order summary, or use a payment-provider sandbox to test confirmation without a real charge.

  2. Write the actions and the expected result

    Use visible button names and field labels. Replace the example text with the words your checkout actually uses.

  3. Test before you start watching

    Use Test journey in the creation or edit form to inspect the draft’s result before saving. The test itself sends no monitoring alerts; website actions still happen.

  4. Choose where failures should reach you

    Add an alert channel and a schedule. PylonMon re-checks a failure before paging, so your team gets a confirmed problem to investigate.

Starter script · adapt to your checkout
click Sign in
fill Email = probe@your-store.example
fill Password = your-test-password
click Continue
expect Welcome back
click Add to cart
click Checkout
expect Order summary

This example stops before payment. It is a starting point, not a verified script for every store. CAPTCHA, MFA, and payment challenges may require a different test flow.

Read the journey setup guide →
Choose the coverage you need

Start free. Watch more as you grow.

Try your first journey, then add coverage for the customer paths your business depends on.

Try your first flow

Free

$0 / forever

Get a real checkout journey running before choosing a paid plan.

  • 1 browser journey
  • Journey checks every 15 minutes
  • 20 monitors
  • 1 alert channel
Test your first journey →
For shared responsibility

Team

$49 / month

Bring your team into the response as your monitoring grows.

  • 10 browser journeys
  • Journey checks every 5 minutes
  • 250 monitors
  • On-call rotations · up to 5 teammates
Get started with Team →

No credit card needed to start free. Compare complete plan limits and features →

Before you connect your store

A few good questions.

Will this place real orders?

A journey performs the actions you give it. Stop before payment for a cart-to-summary check. For an end-to-end purchase, use a dedicated test flow and your payment provider’s test mode. A scheduled journey should never accidentally charge a real card.

How is this different from an uptime check?

An uptime check can confirm that a page responds. A journey interacts with that page and checks the outcome: did sign-in succeed, did the cart open, did the expected confirmation appear? Use both to cover availability and functionality.

Can I check a change before it starts alerting?

Yes. Test journey runs a draft from the creation or edit form without creating a monitor or changing the saved journey. It shows the step results and a screenshot when available. Draft tests require a browser-enabled instance.

What will my team get when a step fails?

The journey result includes the failing step and its error, with a browser screenshot when available. Alert delivery follows the channels and rules you configure. The failing run is re-checked before paging.

What if my store needs a more complex flow?

Start with the journey documentation, or ask us about your setup. Tell us which flow you want to cover and where it gets complicated.

Know when “Add to cart” stops adding.

Start with one journey. See what your customers would see.

Start monitoring free →
More about checkout monitoring

Write it the way you'd tell a new hire

click Sign in
fill Email = probe@example.com
fill Password = hunter2
click Continue
expect Welcome back
click Add to cart
click Checkout
expect Order summary

The full reference covers every step, how credentials are stored, what happens when a step fails, and what journeys deliberately do not do.

No selectors to maintain unless you want them. Steps find things by the text a person sees — the button label, the field's placeholder — and expect waits for the words that prove the step worked. Eight lines cover most checkouts; css:#id is there for the awkward ones.

What happens when it breaks

  • The failing step, named. "step 6 (click "Checkout") failed: nothing on the page matches" — not "site down".
  • A screenshot of the page at the moment it failed, on the monitor page.
  • Re-checked before it pages. One flaky load never wakes anyone; a second failure does, through whatever you already use — Slack, Teams, SMS, a phone call, PagerDuty, your on-call rotation.
  • Per-step timing every run, so "checkout got slow" shows up before "checkout is broken".
  • An incident and a status page, the same ones every other PylonMon monitor gets.

Built for the people who own the number

A broken checkout for three hours costs more than a year of this. Journeys are included on every plan — one on Free, two on Pro ($9), ten on Team ($49), negotiated on Enterprise — next to uptime, server and cron monitoring, alerting and on-call, at flat prices that never count seats.

The browser runs from our infrastructure, identifies itself as PylonMon in its User-Agent so you can exclude it from analytics, and only ever does what your script says. Use a test account and a test payment method where money moves.

Start free — add your first journey →

How it works, step by step: the docs. Watching sign-in rather than checkout? Login monitoring.