01
200 OK
Still responding
Your API returns successfully, but response times start to rise.
LatencySentry is in beta.Checks may be delayed, false positives are possible, and no production SLA is offered yet.
Latency-first monitoring for developers
Catch slow APIs before users complain.
Most uptime tools tell you when something is fully broken. LatencySentry tells you when an API is getting slow, failing, or drifting before users feel it.
No credit card • Free plan available • 1-minute checks on paid tiers
INTERACTIVE EXAMPLE● SAMPLE DATA
When does slow become a problem?
Move the threshold to see which response would trigger a latency alert.
EarlierLater →
THRESHOLD CROSSED
Illustration only · Not a live monitor or a guarantee of alert timingA 620 ms response exceeds your 500 ms threshold, even if the API returns HTTP 200.
FROM SIGNAL TO ACTION
A 200 OK is only half the story.
Your endpoint can be available and still be too slow. Set a threshold, get notified, and investigate the check that needs your attention.
ANATOMY OF A SLOWDOWNILLUSTRATIVE EXAMPLE
02
842 ms
Threshold crossed
A check exceeds the latency threshold you configured.
03
↗ ALERT
Know where to look
Get notified by email or Telegram and inspect recent check results.
Production value
Paid plans matter when speed starts to matter.
Free is enough to understand the product and watch a few endpoints. Paid tiers are where latency-first monitoring becomes much more useful in production.
Why teams pay
Faster checks and faster alerting mean you catch dangerous drift earlier, respond faster, and keep better incident evidence when a real outage starts.
Pricing
Start free. Pay when speed starts to matter.
The free plan is good for evaluation and light production visibility. Paid tiers are for teams that need faster checks, faster alerts, and more useful incident response.
FIND YOUR FIT
How many endpoints do you want to watch?
Choose a starting point. You can compare every plan below.
monitors
Smallest plan by monitor count: Free
Free
FITS YOUR COUNT€0/month
No credit card required
MonitorsUp to 5
Check intervalFrom 5 min
Raw history14 days
Check capacity1/min
Starter
€9/month
Billed monthly
MonitorsUp to 25
Check intervalFrom 1 min
Raw history30 days
Check capacity25/min
Pro
€29/month
Billed monthly
MonitorsUp to 100
Check intervalFrom 1 min
Raw history90 days
Check capacity100/min
Business
€89/month
Billed monthly
MonitorsUp to 300
Check intervalFrom 1 min
Raw history180 days
Check capacity300/min
Plan suggestion is based on monitor count only. Check intervals and retention also differ. Capacity is subject to fair-use limits and same-host pacing. Contact us about larger needs.
Paid tiers unlock 1-minute checks, which is where latency-first monitoring becomes much more useful in production. Yearly billing is available across paid tiers with 20% off annual pricing.
GOOD TO KNOWQuestions?
Get in touch
Questions?
Answered.
Everything you need to know before you start monitoring.
Still have a question?Get in touch
01Is there a free plan?
Yes. You can start with 5 monitors on the free plan.
02How often do you check endpoints?
Starter, Pro, and Business support 1-minute checks. Free starts with a 5-minute minimum interval.
03Do you support private or internal APIs?
Not yet. Private and internal API support is planned for a future release.
04Do I need a credit card?
No. The free plan does not require a credit card.
Start now
Start free, then move faster when production needs it.
Start with the free plan, watch a few real endpoints, and move into paid tiers when faster checks and faster alerts start to matter to production.