How often is Klaviyo down?

Klaviyo has had no incidents detected in the recent monitoring period.

What is the average uptime of Klaviyo in 2026?

The 30-day uptime for Klaviyo is 100.00%%. This is measured by Probecast's independent monitoring from 4 global regions.

How do I get alerted when Klaviyo has an incident?

Create a free Probecast account, add Klaviyo to your monitoring stack, and configure alerts via email, Slack, Microsoft Teams, WhatsApp, or custom webhooks.

Which region has the fastest Klaviyo response times?

Currently, US East has the fastest response times for Klaviyo at 128ms.

What endpoint does Probecast monitor for Klaviyo?

Probecast monitors GET https://a.klaviyo.com/api/v2/lists for Klaviyo. Health checks run every 5 minutes from 4 global regions.

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Klaviyo

OperationalLast checked: —

CRM & Marketing • Klaviyo

Stack Health Score

Score = Uptime - Penalties
Latency >500ms: -2 | >1000ms: -5
Outages: -2 each | Degradations: -1 each

100.0/ 100

Based on uptime, latency & incidents

100.00%

UptimePercentage of time the API was available.
Only DOWN status impacts this metric.

193ms

Avg Latency

1,000+

APIs monitored

Outages

Degradations

This Month

Uptime History

31-day uptime100.00%

31 days ago

Operational

Degraded

Down

Today

Regional Status

🇺🇸

US West

Operational

133ms

latency

🇺🇸

US East

Operational

128ms

latency

🇪🇺

Europe

Operational

209ms

latency

🌏

Asia Pacific

Operational

302ms

latency

Latency (24h)

Avg: 156ms

Min: 12ms

Max: 660ms

660ms330ms0ms

04:50 PM08:56 PM

Last response:

HTTP 403

Showing data from OregonPrimary monitoring node location. See all 4 regions above for regional availability.

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Frequently Asked Questions

Recent Incidents

No incidents recorded

This API has been stable

API Information

Monitored Endpoint

GEThttps://a.klaviyo.com/api/v2/lists

Provider

Klaviyo