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Built for Agencies & Freelancers

Website Monitoring Built for Agencies

Know when a client site goes down before your clients do. Monitor every site from one dashboard with 30-second checks, instant alerts, and professional uptime reports.

Greenfield Law
Up for 14d 3h
online
1 min·142ms·Mar 10, 09:38 AM
Bloom Boutique
Up for 7d 12h
online
1 min·98ms·Mar 10, 09:38 AM
Apex Fitness
Partial outage · 2h 15m
degraded
30s·1,204ms·Mar 10, 09:38 AM
https://app.northstar.dev
Up for 31d 8h
online
5 min·67ms·Mar 10, 09:35 AM
Coastal Realty
Up for 5d 19h
online
1 min·185ms·Mar 10, 09:38 AM

Why Agencies Choose Sentinel

One dashboard for every client site

Whether you manage 5 or 100+ client sites, you need monitoring that scales with your agency. Sentinel gives you a single pane of glass for uptime, SSL, DNS, and performance across your entire portfolio.

  • Know about downtime before your clients do
  • Manage all client sites from one dashboard
  • Prove your value with uptime reports
100+
Client Sites
30s
Check Intervals
4
Global Regions
<1s
Alert Speed

Why Agencies Love Us

Everything you need to manage client sites

Multi-Site Dashboard

Monitor all your client sites from a single dashboard. No more juggling multiple tools or browser tabs.

Instant Alerts

Get notified via email, SMS, Slack, or webhooks the moment a client site goes down.

SSL & DNS Monitoring

Track SSL certificate expiry and DNS changes across all client sites automatically.

Client Reports

Generate professional uptime reports to share with clients and prove the value of your retainer.

Status Pages

Give each client a branded status page so they can check uptime without contacting you.

Team Collaboration

Invite your team, assign permissions, and keep everyone in the loop when incidents happen.

FAQ

Agency monitoring questions, answered

Can I monitor all my client websites from one account?

Yes. Sentinel is built for agencies and freelancers to monitor many client sites from a single dashboard, so you don't have to juggle separate tools or logins for each client.

Can I give clients their own status page?

Yes. You can set up per-client status pages so each client can check their own site's uptime without contacting you, which cuts down on support requests.

How quickly will I know when a client site goes down?

Uptime checks run as often as every 30 seconds from four global regions, and a result is confirmed by consensus before you're alerted. That means you usually hear about an outage before your client does, without false alarms from a single bad region.

How does Sentinel notify my team about incidents?

Alerts can be sent via email, SMS, Slack, Discord, and webhooks, so you can route notifications to wherever your team already works.

What can Sentinel monitor besides uptime?

Beyond uptime, Sentinel checks SSL certificates, DNS, domain expiration, page keywords, JSON/API response assertions, ICMP ping, TCP port reachability, and heartbeat/cron jobs, so you can catch expiring certificates, broken pages, unreachable services and missed scheduled jobs across your whole client portfolio.

Is there a free trial for agencies?

Yes. Paid plans include a 14-day free trial and there's also a free plan to start with. You can cancel anytime.
Start monitoring client sites in 60 seconds

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