MSW is UP
and responding normally
API mocking library for browser and Node.js.
Depend on MSW?
Save it as a Vartio monitor and get alerts when our EU checks detect downtime or degraded response.
Response Time History
Recent Activity (7 days)
Response time has held steady, averaging 54ms.
No status changes in the last 7 days — MSW has been consistently up.
About MSW
- Website
- mswjs.io
- Category
- Testing
- Monitored from
- EU (Helsinki, Frankfurt, Amsterdam)
- Check interval
- Every 5 minutes
- Monitoring since
- March 30, 2026 (148 days, 5,737 checks)
How we measure this: checks run from EU servers only, so a result here reflects what the EU sees, not a global view. A regional outage, CDN edge-cache issue, or bot/WAF protection that treats our monitoring probe differently than a real visitor can all cause this to disagree with MSW's own status page — that's a limitation of any third-party checker, not just this one.
Frequently Asked Questions
Is MSW down right now?
MSW is currently up and running. Our last check from EU servers showed a response time of 52ms with 100% uptime over the past 148 days.
What is MSW's uptime?
MSW has a 100% uptime measured over 148 days, based on 5,737 checks from Vartio's EU monitoring servers located in Helsinki, Frankfurt, and Amsterdam.
How do I check if MSW is down?
Vartio monitors MSW every 5 minutes from multiple EU servers and runs a live check when you visit this page. This page shows the current status, response time, and uptime history. You can also monitor your own services for free.
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