An expired cert on checkout
stops every sale.
Merlonix monitors SSL certificates, DNS records, and payment gateway vendor status across every client store — and alerts your team before a visitor sees a browser warning or a checkout fails.
No credit card for the trial. Cancel any time.
- SSL pre-expiry alert
- 30 days
- Check cadence (Agency)
- 5 min
- Payment & infra vendors watched
- 11
- Independent DNS resolvers
- 3
Where e-commerce agencies get burned
Three failure modes your uptime monitor misses entirely.
Uptime monitors check whether a URL returns 200 OK. An e-commerce site can return 200 OK on every ping while an expired SSL cert blocks checkout, a DNS record routes payment confirmation emails to the wrong server, or a payment gateway processes zero transactions in a region.
Checkout SSL expiry
A certificate lapses during peak traffic
Let's Encrypt auto-renewal fails. A wildcard cert expires unnoticed. A platform migration breaks the cert chain. Browsers show a security warning on the checkout page. Every visitor who sees it and leaves is a sale that cannot be recovered.
DNS drift after platform migration
A record change breaks payment routing
E-commerce platform migrations touch DNS heavily — CNAME records for hosted checkouts, A records for custom domains, TXT records for payment gateway verification. One record left pointing at the old host breaks the checkout flow silently while the main site looks fine.
Payment gateway partial outage
Stripe or PayPal degrades mid-campaign
Payment gateways have partial outages. Some regions stop processing. Some card types fail. The store looks operational — the site returns 200, the checkout loads — but purchases fail at the payment step. Your team learns about it from the client, not from an alert.
How it works
Set up once per store. Watch everything from there.
Merlonix is built for agencies managing client stores they do not fully own — you handle the build and the marketing, but the domain and the payment processor are the client's. Monitoring that fits that relationship.
01
Add each client store domain
Verify once using a DNS TXT record or a file upload to the web root — whichever you can do faster. If you do not control the client's DNS, the file upload method works on any hosting environment. Verification takes under two minutes.
02
SSL and DNS check every 5 minutes
Merlonix reads the TLS certificate directly from the server on every check — expiry date, chain validity, SAN list, key algorithm. DNS records are diffed against your expected state across three resolvers. Alerts fire at 30, 14, and 7 days before SSL expiry, and immediately on any unexpected change.
03
Payment vendors watched continuously
Stripe, PayPal, Klarna, Braintree, Shopify Payments, and other infrastructure vendors are polled on a shared schedule. One check serves every tenant — no per-domain cost. Partial outages, degraded performance, and maintenance windows surface in your dashboard before clients notice checkout failures.
04
Alert goes to where your team is
Email, Slack, or webhook — whichever your team actually reads. Alerts include the specific domain, check type, current state, and recommended first action. No dashboard login required to triage. Ack, mute, or resolve from the alert itself.
Vendor status monitoring included
11 upstream vendors watched on every account.
Every Merlonix account monitors these services automatically — no configuration required. When any of them reports degraded performance or an outage, it appears in your dashboard and triggers an alert before clients start submitting support tickets.
Vendor monitoring runs on a shared schedule — the cost of polling is shared across all accounts. Your per-check quota is not consumed.
Pricing
Flat monthly fee. Every client store included.
No per-domain fees. No per-alert charges. One SSL incident costs more in emergency dev time and client credit than a year of the Agency plan.
Starter
For freelancers or small studios watching a handful of stores.
$29/ month
- 10 monitored assets
- 1 seat
- 15-min check cadence
- SSL + DNS + vendor monitoring
- Payment gateway status alerts
- Email + Slack alerts
Team
For growing e-commerce agencies with multiple client stores.
$79/ month
- 50 monitored assets
- 5 seats
- 10-min check cadence
- SSL + DNS + vendor monitoring
- Payment gateway status alerts
- Email + Slack alerts
Agency
For full-service agencies managing large e-commerce client rosters.
$199/ month
- 200 monitored assets
- 15 seats
- 5-min check cadence
- SSL + DNS + vendor monitoring
- Payment gateway status alerts
- Email + Slack alerts
Stop losing client revenue to preventable failures.
Add your first client store in under two minutes. The 30-day SSL alert alone pays for the tool on the first renewal you catch. 14-day trial, no card required.