website issue monitoring
Your API Returned 200 OK. The Response Body Was Empty.
A status code is only one signal. Visual Sentinel combines response validation, request timing, SSL, DNS, and optional page-level visual or content checks.
Permanent Free plan, or a 10-day card trial of paid coverage from $15/month.
definition
What Is Endpoint Monitoring?
Endpoint monitoring checks public HTTP and HTTPS URLs to verify that they are reachable, return an expected status or body, and stay within a response-time threshold. An endpoint can be a website page, REST or GraphQL API, webhook receiver, or health-check route. A 200 OK response does not guarantee a useful response. An API can return an empty body, a DNS record can resolve somewhere unexpected, an SSL chain can fail validation, or a web page can render blank while still returning 200. Response assertions and supporting evidence help separate those failure modes. Visual Sentinel records regional HTTP timing, SSL certificate evidence, and DNS state in one dashboard. You can configure expected status codes and response assertions. Eligible web pages can also use visual captures, while Starter and higher plans add content monitoring. Schedules are plan-specific: uptime checks run every 10 minutes on Free, every 5 minutes on Solo and Starter, and every minute on Business and Agency. Visual captures have their own schedule of 30 minutes on Solo and 15 minutes on Starter, Business, and Agency.
what you get
Built for issues customers actually notice.
Multi-Region Checks
Endpoints are checked from EU and US regions. Compare latency across locations and catch regional outages that single-region tools miss.
Plan-Based Intervals
Business and Agency run 1-minute uptime checks. Solo and Starter run every 5 minutes, while Free runs every 10 minutes.
SSL & DNS Validation
The uptime request checks TLS trust and hostname authorization. Selected DNS records are stored and compared on a separate six-hour history schedule.
Regional Request Timing
See total response time plus DNS, connection, TLS, first-byte, and download phases when the selected check node supplies them.
10 Channels + Web Push
Free includes email and Web Push. Starter adds Slack, Discord, and Telegram. Solo, Business, and Agency add WhatsApp, Teams, PagerDuty, OpsGenie, webhooks, and Prometheus.
API & Website in One Dashboard
Monitor REST APIs, GraphQL endpoints, webhooks, and full websites from a single interface. No separate tools or subscriptions needed.
how it works
Three steps, no extensions.
Add Your Endpoints
Enter a public website, API route, webhook receiver, or health-check URL and choose the supported request settings.
Configure Alerts
Choose the channels available on your plan and configure the monitor threshold, sensitivity, delay, and repeat interval.
Choose the Relevant Layers
Use HTTP, timing, SSL, and DNS evidence for endpoints, then add response assertions, visual captures, or content checks where the endpoint and plan support them.
Frequently asked questions
What is endpoint monitoring?
Endpoint monitoring is scheduled checking of public HTTP and HTTPS URLs such as websites, REST or GraphQL APIs, webhook receivers, and health-check routes. Depending on the endpoint, plan, and configuration, a check can validate expected statuses or response assertions and record response timing and TLS evidence. Visual captures, content monitoring, and DNS history use their own eligibility rules and schedules.
What types of endpoints can Visual Sentinel monitor?
Visual Sentinel monitors public URLs reachable over HTTP or HTTPS, including websites, REST and GraphQL APIs, webhook receivers, and health-check routes. HTTP evidence includes status, response time, SSL, DNS resolution, and configured response assertions. Eligible web pages can also use visual captures and content monitoring.
How often are endpoints checked?
Uptime checks run every 10 minutes on Free, every 5 minutes on Solo and Starter, and every minute on Business and Agency. Regional HTTP checks record DNS, connection, TLS, first-byte, download, and total response timing when available. Visual captures run separately every 30 minutes on Solo and every 15 minutes on Starter, Business, and Agency.
Do I need separate tools for API and website monitoring?
Visual Sentinel can keep eligible public website and API monitors in one dashboard. The layers are not identical: page-like URLs can use visual captures, Starter and higher can use response-content monitoring, and DNS history follows a six-hour schedule. Private-network checks and scripted multi-step transactions require a different tool.
What makes Visual Sentinel different from other endpoint monitoring tools?
Visual Sentinel keeps HTTP timing, SSL evidence, DNS state, response assertions, and eligible page-level visual or content checks in one dashboard. The available layers and notification channels depend on the selected plan and endpoint type.
How is endpoint performance measured?
Each regional check records total response time. DNS lookup, connection, TLS, first-byte, and download timing are also stored when the selected check node supplies those phases. The dashboard graphs the available timing so you can compare regions and review degradation trends.
start watching in 60 seconds
Monitor Your Endpoints in 60 seconds.
Permanent Free plan, or a 10-day card trial of paid coverage from $15/month.
- permanent Free plan
- 10-day paid trial
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