URL & API
Assert on status, headers, body and JSON. Chain requests that share cookies and pass extracted values along.
url · api · multi-stepGET /health → 200 · 142ms · $.status == "ok" ✓one platform · ten check types
Uptime, APIs, real-browser flows, DNS, TCP, UDP, certificates, domain expiry, cron heartbeats and AI agents. Paste a URL and we propose the monitors. We only page you when a check keeps failing.
no signup to probeno credit card
api.acme.comoperational
uptime · 30d99.98%
p95 latency165ms
checks · 24h1,412
latest · 121 ms — hover the bars
http 200tls 14d leftdns 18ms
live monitor
by the numbers
10check types
4alert channels
1url to start
$0to start
how it works
Three steps. That's the whole thing.
1
Paste a URL
We probe it and propose the checks worth having — the site, its ports, DNS records and certificate. Keep the ones you want. No agents to install.
https://acme.com
2
We watch it, around the clock
Every check type on one schedule, one dashboard and one incident list — at the interval you pick.
45 days · 99.97% up
3
We tell you when it breaks
One alert when it goes down, one when it comes back — to the channel you already live in.
EmailSlackTeamsPagerDutyWebhook
every signal, one place
Stop stitching five tools together.
From a single ping to an agent driving a real browser — under one calm roof, and one bill.
Browser
Real Chromium walks your login or checkout, with credentials referenced from secrets rather than pasted into the script.
chromium · steps · secretslogin → checkout · 7 steps · 1.9s ✓AI agent
An agent explores the site, writes its own test suite, self-heals when the page changes and diffs every run.
explore · self-heal · diff14 pages · 38 tests · 1 selector healedDNS
Resolve a record and match it against what you expect — drift gets caught on the next check, not the next outage.
record · expected · driftA acme.com → 76.76.21.21 · matches ✓TCP & UDP
Open a socket and time the connect, or send a datagram and require a reply — databases, queues, game servers.
port · connect · replydb:5432 connect 31ms · ntp:123 reply 12msCertificates
A countdown on every TLS cert, with warnings that tighten at 30, 14, 7, 3 and 1 days out.
tls · expiry · countdownacme.com · 61 days left · next warning at 30Domain expiry
Registration renewals — the clock nobody automates, until the day the site goes dark.
registration · expiryacme.com · renews in 214 daysHeartbeats
Inbound. Your cron job or worker pings us; we page you when a ping fails to arrive.
cron · jobs · inboundnightly-backup · last ping 3h ago ✓APMcoming soon
Traces, spans and p99 by endpoint, in the same place as the checks. Not shipped yet.
traces · spans · p99the product
One calm screen for the whole stack.
obsrvly / dashboard
obsrvly / dashboarddarklight
○ all-clear
1 failure
acme.com · tls · degraded · 100.00% uptime
live · 30s poll
avg response145ms
failed checks5
overall uptime · 24h99.84%
up4degraded1down0active5/5avg p95166ms
statusmonitorresp
up degraded down
db:5432 · tcpoperational
- 14:02:00connect 31 ms
- 14:03:00connect timeout · first failure, no page yet
- 14:04:00failed again · incident opened
- 14:04:01alert sent → Slack #ops
- 14:07:00connect 29 ms · recovered after 3m
- 14:07:01recovery sent → Slack #ops
#ops
db:5432 is down — TCP connect timed out.
db:5432 recovered after 3m.
1 alert, 1 recovery — not one per failed check
alerting that respects you
Catch it before your users do.
A single blip doesn't page anyone. When a check keeps failing you hear about it once, and again when it recovers.
- ✓ Fires on consecutive failures, not one bad check
- ✓ Down and recovered — one message each
- ✓ Optionally waits for a second region to agree
- ✓ PagerDuty pages whoever is on call
- ✓ Mute a known-broken monitor; it keeps checking
- ✓ Signed webhooks for anything we don't cover
public status pages
Answer “is it down?” before they ask.
Turn on a public page built from the monitors you already run. It updates itself, so there is nothing to post during an outage.
- ✓ Pick the monitors to show and the name each one gets
- ✓ 90 days of uptime, one bar per day
- ✓ Open and past incidents, and maintenance windows
- ✓ Never shows a URL, a host or an error message
Sleep through the night.
We'll wake you only when it matters. Your first monitors are one URL away.
no credit card · free plan · cancel paid plans anytime