Know before your customers do.
A deployment overwrites a security header. A DNS migration drops a record. A cookie banner regresses to set tracking before consent. Monitoring catches it — and alerts you on change, not at month-end.
10 monitors under full coverage. Uptime every minute, weekly browser-side deep scans with drift alerts on cookie / a11y / pre-consent / perf changes. EU-hosted in Germany.
€59*/month · €590*/year (€49.17*/mo) · cancel anytime
* All prices include VAT where applicable.
How often we check
Different things change at different speeds.
Uptime can fail in seconds. Cookies regress with each release. A certificate renews every 60-90 days. Each check runs at the right cadence — caught fast where it matters, efficient where it doesn't.
Uptime & response time
HTTP/HTTPS reachability, status code, response time, keyword match
Security posture grade
Headers (HSTS, CSP, X-Frame), DNSSEC, CAA, A-F grade with degradation alerts
SSL certificate
Expiry, issuer, TLS version, forward secrecy, OCSP
Email authentication
SPF, DKIM, DMARC records, blacklist checks
DNS consistency
Record drift detection, hijack prevention, resolver agreement
Cookie + accessibility deep scan
Real-browser audit, drift alerts on regression
Domain registration
WHOIS, expiry date, registrar, nameserver changes
Every security alert is verified by a second check before dispatch — no false alarms from transient issues.
What's included in Pro
The full continuous-monitoring toolkit for production sites — uptime, security, drift detection, CSP, multi-channel alerts.
10 monitors
Cover up to 10 websites or services with full security + uptime coverage on each.
1-minute uptime
HTTP/HTTPS checks every minute. Response time tracking, status codes, confirm-on-change before paging.
Drift alerts
Cookie banner regresses? CSP weakens? Pre-consent tracker appears? You're alerted within hours of the change, not at the next audit.
Pre-consent drift = critical
A site that suddenly sets analytics cookies before consent is a GDPR / ePrivacy violation. We flag it as critical, not just informational.
Performance regression
Core Web Vitals tracked weekly. LCP, INP, CLS regressions alert before they hit your SEO ranking.
CSP reports — 100k/day
HMAC-signed ingest URL, aggregated dashboard, recommendation engine. Catch rogue scripts before users do.
TCF + CMP drift monitoring
Validate the IAB TCF string emitted by your CMP. Detect when a CMP misconfiguration breaks downstream consent signalling.
All alert channels
Email, Slack, Microsoft Teams, Discord, Telegram, generic webhook. Severity routing rules included.
Status page
Public status page with subscribed updates. "Powered by SiteGuardian" stripe — full white-label is on Compliance.
API read + MCP server
REST API key for read access, plus the MCP server tool surface for AI clients (Claude, Cursor, etc.).
Subdomain discovery
Automatic discovery of subdomains for one-click monitor creation.
90-day history
Three months of trend data — long enough to catch quarterly regressions.
WordPress plugin
One-click install on WordPress sites — grade, drift, and alerts inside the WP admin.
EU-hosted. Privacy controls built in.
All customer data stored in Germany (Hetzner). No deliberate third-country transfers. Data export, account deletion, and optional TOTP 2FA included. No tracking. No analytics.
Need to prove you're monitoring?
If your organisation falls under NIS2, DORA, or GDPR obligations, Compliance adds 50 monitors, 17 EU regulatory frameworks, evidence vault, daily cookie scans, accessibility auditing, supply chain monitoring, integrated ISMS, SSO, and white-label status pages — no second platform needed.