Simple monitoring for online services

Know when your service goes down — before your customers do.

Simple monitoring for websites, APIs and online services. Get notified in Telegram when something goes wrong.

Start monitoring for free Go to Dashboard

5 monitors free
7-day trial
Telegram alerts
No DevOps required

Don't wait for your customers to report a problem.

Your website can be down. An API can return errors. A cron job can silently stop running. A certificate can expire. You should know about it before your users do.

Website is down

Visitors see an error instead of your service.

API returns errors

Integrations break without a visible trace.

Background job stopped

A cron job silently quits doing its work.

SSL certificate expires

Browsers start blocking your website.

Webhook stopped responding

Integrations fail and nobody notices.

Monitoring without the complexity

Three steps — and your services are under control.

Add

Add your website, API, worker, cron or other service.

Check

Checkon.link regularly checks your services.

Alert

Get a Telegram alert when something goes wrong.

What you can monitor

External availability and service monitoring — for websites, APIs and background jobs.

Website / HTTP

HTTP status
Response time
HTTPS
Content
Availability

API

HTTP methods
Status codes
Response time
JSON assertions
Response body

SSL

Certificate
Expiration
Hostname
Issuer
TLS connection

Heartbeat / Cron

Cron
Backup
Worker
Parser
Synchronization
Batch jobs

DNS

A
AAAA
CNAME
MX
TXT
NS

TCP

Host
Port
Connection

Webhook

HTTP request
Status
Response
Response time

Domain / WHOIS

Domain expiration
Registrar
NS servers
WHOIS records

Content

Keyword presence
Page content
Content changes
Response hash

Everything you need — nothing you don't

Telegram alerts

Know about incidents immediately.

Incident detection

Avoid false alerts with consecutive failed checks.

History

See uptime, response time and incidents.

Projects

Group monitors by product, client or service.

API

Automate monitoring from your own systems.

Status pages

Give your customers a simple service status page.

A clear picture of every service

Uptime, response time and incidents — in one simple dashboard.

Checkon.link dashboard mockup: monitor list with one active incident on Payment API

Simple pricing

Start with a free trial. Upgrade when your services need more.

Free Trial

5 monitors free for 7 days

5 monitors
7 days
HTTP / HTTPS monitoring
SSL monitoring
Telegram alerts
5-minute checks
No Email
No Heartbeat
No DNS
No API monitoring
No TCP
No Webhook
No Domain / WHOIS
No Content
No Status Page

Start free

Starter

Everything you need to monitor a small online service.

$5 / month

25 monitors
1-minute checks
HTTP / HTTPS
SSL
Telegram
Email
Heartbeat / Cron
DNS
API monitoring
Domain / WHOIS
Content checks
30 days history

Start Starter

Pro

Advanced monitoring for multiple services and projects.

$15 / month

100 monitors
1-minute checks
HTTP / HTTPS
SSL
Telegram
Email
Heartbeat / Cron
DNS
API monitoring
TCP monitoring
Webhook monitoring
Domain / WHOIS monitoring
Content monitoring
Status pages
API access
90 days history

Start Pro

No credit card required. Crypto-friendly payments: USDT, USDC, BTC.

Frequently asked questions

Website, HTTP endpoints, APIs, SSL certificates, DNS records, TCP ports, webhooks and background jobs through heartbeat monitoring.

No. The service is designed for developers, indie hackers and small online businesses that want simple monitoring without building an observability stack.

Connect your Telegram account and receive alerts when a monitor goes down and when it recovers.

You can monitor up to 5 services for 7 days for free.

The service is designed to support crypto-friendly payments, including stablecoins.

Choose a paid plan to continue monitoring your services.

Yes. Use heartbeat monitoring. Your job sends a request to Checkon.link and the service verifies that it continues to report successfully.

No. Checkon.link focuses on simple external availability and service monitoring rather than full observability.

Questions? Talk to us

Tell us what you monitor — we will help you get started.

Know when something breaks.

Start monitoring your services for free.

Start monitoring for free