UptimeSignal
UptimeSignal provides synthetic monitoring for websites, APIs, webhooks, and other HTTP endpoints from outside a user’s infrastructure.
What UptimeSignal is
UptimeSignal provides synthetic monitoring for websites, APIs, webhooks, and other HTTP endpoints from outside a user’s infrastructure. Checks measure response time and validate HTTP status, response body, SSL certificates, DNS resolution, and TLS handshakes. Email, Slack, Discord, Telegram, and webhook alerts are available on every plan, including recovery notifications. The service requires two consecutive failures before alerting. Every plan includes unlimited public status pages with incident timelines, component groups, and uptime history bars. The Free plan costs nothing, permits commercial use, requires no credit card, and includes 25 monitors with five-minute intervals. Free status pages use a UptimeSignal subdomain. Pro costs $10 a month when billed annually at $120/year, adding unlimited monitors, one-minute intervals, 90-day uptime history, priority support, and lightweight event tracking through JSON requests. A REST API and MCP server let compatible AI agents manage monitors, alerts, and status pages.
Good
- Checks HTTP, SSL, DNS, and TLS behavior
- Alerts through email and multiple chat channels
- Unlimited status pages on every plan
- Free plan allows commercial use
- API and MCP support AI-agent management
Watch out
- Free plan limits monitoring to 25 monitors
- Free checks run at five-minute intervals
- Free status pages use a UptimeSignal subdomain
- Custom domains require Pro
Who it suits
UptimeSignal suits developers monitoring external websites, APIs, and webhooks. Its free plan also fits commercial projects needing basic monitors and public status pages.
Verdict
UptimeSignal covers endpoint checks, alerting, and public status pages in one service. The free plan is capable for basic monitoring, while Pro adds faster checks and broader controls.
Plans and prices
From UptimeSignal's own pricing page, checked 7 Oct 2026.
| Plan | Price | What it gives you |
|---|---|---|
| Free | Free | 25 monitors · 5-minute checks · 7-day history · unlimited status pages · email, Slack, Discord, Telegram, and webhook alerts · commercial use allowed |
| Pro | $10 a month | Unlimited monitors · 1-minute checks · 90-day history · unlimited status pages · events and issue tracking · priority support · Billed annually at $120/year |
The facts
Each one read from UptimeSignal's own pages, with the date it was checked.
What it does
- AI agent support
- Its REST API and MCP server let compatible AI agents create monitors, check uptime, and manage alerts and status pages.checked 7 Oct 2026
- Alerts
- Email, Slack, Discord, Telegram, and webhook alerts are available on every plan, with recovery notifications.checked 7 Oct 2026
- Checks
- Its checks measure response time and validate HTTP status, response body, SSL certificates, DNS resolution, and TLS handshakes.checked 7 Oct 2026
- Custom domain
- Yeschecked 21 Sep 2026
- Data handling
- The privacy policy says UptimeSignal does not sell user data and that Stripe processes Pro payments without UptimeSignal storing card details.checked 7 Oct 2026
- Data security
- The privacy policy says data is encrypted in transit and at rest and account authentication uses time-limited magic links.checked 7 Oct 2026
- Event key security
- Event ingest keys are write-only and scoped to event submission, with per-account rate limits and payload caps.checked 7 Oct 2026
- Event tracking
- Pro includes lightweight error and event tracking via a JSON HTTP request, without an SDK; the maker says it is not a full APM or tracing suite.checked 7 Oct 2026
- Failure verification
- UptimeSignal verifies an issue with two consecutive failures before alerting to reduce false positives.checked 7 Oct 2026
- Incident updates
- Yeschecked 21 Sep 2026
- Integrations
- Status page webhooks can update component status, create incidents, and resolve issues, and the page names GitHub Actions, GitLab CI, Jenkins, and PagerDuty as examples.checked 7 Oct 2026
- Intended users
- The maker describes the service as built for developers and says its free plan allows commercial use.checked 7 Oct 2026
- Maintenance scheduling
- Yeschecked 21 Sep 2026
- Paid from
- 10checked 21 Sep 2026
- Purpose
- UptimeSignal provides synthetic monitoring that checks websites, APIs, webhooks, and other HTTP endpoints from outside a user's infrastructure.checked 7 Oct 2026
- Status page limits
- The free plan hosts status pages on a UptimeSignal subdomain; custom domains and removal of UptimeSignal branding are Pro features.checked 7 Oct 2026
- Status pages
- Every plan includes unlimited public status pages with incident timelines, component groups, and uptime history bars.checked 7 Oct 2026
- Subscriber channels
- multi-channelchecked 21 Sep 2026
- Support
- The Pro plan includes priority support.checked 7 Oct 2026
Money
- Free plan
- Yeschecked 21 Sep 2026
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