The safety net for your
agency's infrastructure.
Merlonix is autonomous monitoring for the critical infrastructure that standard uptime monitors miss. SSL expiry, DNS drift, and upstream vendor outages — one pane of glass, every client, one catch it before they do alert flow.
No credit card for the trial. Cancel any time.
- Time to first alert
- 5 min
- Independent resolvers
- 3
- Upstream vendors watched
- 11
- False positive rate
- < 1%
Agencies monitoring clients on
- WordPress
- Shopify
- HubSpot
- Webflow
- Squarespace
- Vercel
Public status page
Every agent we run, alive or degraded — out in the open.
Vendor monitoring, transparent
The 11 vendor status pages we watch — and what we saw last.
14-day trial. No card required.
Trial ends in read-only mode unless you choose to subscribe.
We run Merlonix on our own sites
We monitor the production domains we operate with the same checks you'd get — cert expiry, DNS drift, uptime.
The gaps between other monitors
The failure modes standard uptime monitors miss.
Standard uptime monitors check whether a URL returns a 200 OK. Merlonix watches the infrastructure underneath: SSL certificate validity, DNS record drift, and upstream vendor status. These are the silent killers that standard monitors miss.
Expired silently
SSL certificates
Let's Encrypt renewals fail. Manually-installed wildcards lapse. Chains break after an upstream CA rotation. You find out when a client's checkout stops working.
Drifted quietly
DNS records
Someone ran a migration. Someone deleted an A record. Someone flipped a CNAME. Now a subdomain resolves to nothing and nobody at the agency knew until the client called.
Degraded upstream
Vendor status
Stripe is having a partial outage. Cloudflare's DNS in one region is flapping. Shopify's admin is intermittent. Your team learns on Twitter.
How it works
Alert-first workflow. Zero daily checking.
Merlonix is designed to be invisible until you are needed. We handle the plumbing so you can focus on your clients, not your monitors.
01
Attest once per asset
You tell Merlonix which domains you're authorized to watch — inline text, DNS TXT, or an .well-known file. The attestation is signed and stored. This keeps us on the right side of the line between monitoring and snooping.
02
Agents check every 5 minutes
Cloudflare Workers fan out to three independent DNS resolvers, pull each hostname's leaf cert, and diff against the expected DNS records. Eleven upstream vendor status pages are polled globally on one shared schedule — you only pay the fetch once per vendor.
03
AI triages before we alert
An LLM classifier decides: real issue, false positive, or informational. Uncertain results bypass the AI and escalate directly to your team. Zero silent failures.
04
Deliver to where you already are
Email, Slack, or webhook — whichever channel the client-facing engineer actually reads. Ack / mute / resolve from the alert itself. No "please log in to the dashboard to triage."
Pricing
One flat fee per month. Every client included.
No per-seat upsells. No per-check metering. Pick the tier that fits your asset count and move on.
Starter
For solo operators watching a handful of clients.
$29/ month
- 10 monitored assets
- 1 seat
- 15 min check cadence
- Email + webhook alerts
Team
For small agencies that need faster checks and more seats.
$79/ month
- 50 monitored assets
- 5 seats
- 10 min check cadence
- Slack + webhook alerts
- API access
Agency
For the agencies that can't afford an outage they didn't see.
$199/ month
- 200 monitored assets
- 15 seats
- 5 min check cadence
- All alert channels
- API access
- Priority support
Compliance
For agencies serving HIPAA / SOC 2 / PCI verticals with audit obligations.
$499/ month
- Everything in Agency
- 13-month evidence retention
- Per-control compliance dashboards
- Evidence-pack export
- Read-only auditor seats
- Quarterly audit-prep email
Common questions
What agencies ask before signing up
Do I need DNS access to add a client domain?
No. Merlonix supports DNS TXT record verification (if you manage DNS) and HTTP file verification (if you only have hosting access). The HTTP method requires dropping a single text file into .well-known/ — no DNS credentials needed.
How is this different from uptime monitoring (Pingdom, UptimeRobot, etc.)?
Uptime monitors check whether a URL returns a 200 OK. Merlonix watches what they miss: SSL certificate validity and expiry dates, DNS record drift, and upstream vendor status. These are the failure modes that generate client calls after a normal uptime monitor shows green.
Which upstream vendors do you watch?
Stripe, Cloudflare, Shopify, Vercel, GitHub, Slack, AWS, Azure, Google Cloud, Anthropic, and OpenAI — 11 vendors in total. Need to monitor a specific vendor? We accept requests for new status page integrations via the dashboard.
What happens when the 14-day trial ends?
You choose a plan and enter billing. There is no automatic charge at trial end — if you do nothing, your account becomes read-only until you add a payment method. Cancel any time.
Can I monitor domains my clients own, not me?
Yes — that is the primary use case. Merlonix’s attestation system (DNS TXT or HTTP file verification) proves you have a legitimate relationship with each domain without requiring ownership. One verification per domain, then you monitor indefinitely.
How quickly do I get alerted?
Check cadence depends on your plan (15 min / 10 min / 5 min). SSL expiry alerts fire at 30 days, 7 days, and 1 day before expiry so you have time to act. Vendor status alerts fire within one check cycle of a status page update.
Start watching for free.
Pick a plan. Add your first client domain. Get your first SSL, DNS, or vendor alert in under 10 minutes — or know that everything is green. Cancel any time during the 14-day trial and pay nothing.
No credit card for the trial. Terms.