Visual Sentinel is unclaimed —

Visual Sentinel

Catches what uptime checks miss.·visualsentinel.com

Visual Sentinel is a six-layer website monitoring platform covering uptime, performance (Core Web Vitals), SSL certificate expiry, DNS record changes, pixel-level visual regression detection, and content change monitoring in one dashboard. It renders pages in a real headless browser to catch visitor-visible failures that basic uptime checks miss, and correlates server health metrics with site incidents. It offers native WhatsApp Business alerts alongside nine other notification channels and a permanent free plan.

What it's for

Monitor website uptime via HTTP/HTTPS/TCP/keyword/PING/PORT checksDetect visual regressions with pixel-level screenshot comparisonGet SSL certificate expiry warnings before certificates lapseDetect DNS record changes (A, AAAA, MX, CNAME, TXT, NS, SOA)Track content/text changes on specific page elements via CSS selectorsMonitor Core Web Vitals and page performanceCorrelate server health (CPU, RAM, disk, network) with site outagesRun public status pages, including white-label ones for agenciesGenerate client-facing monitoring reports for agenciesUse via MCP server from Claude Desktop, Claude Code, Cursor, Cline, Continue

Features 17

10 alert channels (Email, WhatsApp, Slack, Discord, Telegram, Teams, PagerDuty, OpsGenie, webhooks, Prometheus) plus Web Push
AI chat assistant and AI-generated incident insights
Client report generation including Google Search Console data
Content change detection on specific CSS selectors
Core Web Vitals performance monitoring (LCP, CLS, INP, TTFB)
DNS record change detection (A, AAAA, MX, CNAME, TXT, NS, SOA)
Grouped server-outage incident alerts (one alert for multiple affected sites)
HTTP/HTTPS/TCP/keyword/PING/PORT uptime monitoring with multi-region cross-confirmation
MCP server with 16 tools for AI client integration
Native WhatsApp Business alerts
Pixel-level visual regression detection in a real headless browser
Public OpenAPI specification / REST API
Public status pages with custom-domain support
Server monitoring with site-to-server correlation
Smart diagnostics / root-cause suggestions
SSL certificate expiry monitoring with 13/3/1 day tier warnings
White-label status pages (Agency plan)

At a glance

free tierfree trialAPI

TypeWeb app

DeploymentCloud

PlatformsWeb, Android

LanguagesEnglish

Forsolo developers and indie hackers, small businesses, SaaS and ecommerce teams, agencies and multi-site operators

CompanyAcefina LLC · 2025

Integrations

Google AnalyticsGoogle Search ConsoleCloudflareSlackDiscordTelegramWhatsApp BusinessMicrosoft TeamsPagerDutyOpsGeniePrometheusClaude DesktopClaude CodeCursorClineContinue

Resources

Pricing

Two separate trial paths exist: an optional one-time 7-day Business trial with no card during first monitor setup on the Free plan, or a 10-day trial of a selected paid plan requiring a card on file (billing begins automatically after trial unless cancelled). Custom/Agency-plus tier is quote-based with no listed price.

FreeFree

Permanent free plan, no card required.

3 monitors (HTTP + SSL), checks every 10 minutes, EU + US check regions, 1 status page

Solo$6/mo

10-day free trial with card on file.

1 monitor with 5 of 6 layers, 1 server, 7-day data retention, 1 status page

Starter$12/mo

10-day free trial with card on file.

15 monitors, 5-minute checks, all 6 layers, 5 visual monitors, 2 servers, 7-day retention

Business$39/mo

Marked 'Most Popular'. 10-day free trial with card on file.

60 monitors, 1-minute checks, all 6 layers, 10 servers, 5 status pages, 5 team members, 30-day retention

Agency$149/mo

10-day free trial with card on file.

300 monitors, 1-minute checks, 50 status pages, 50 team members, 20 servers, 90-day retention

CustomQuote

Quote-based; contact billing.

Custom monitor and server limits

Annual billing saves 25% across all paid plans.