Documentation
Short, accurate pages that match the product as built. Each page shows when it was last changed.
Getting started
From sign-up to your first real observation, a verified alert channel and a status page.
Updated 2026-10-10
Measurement methodology
How availability, coverage, latency and incidents are computed, and what the numbers do not mean.
Updated 2026-10-10
REST API
Authentication, scopes, pagination, idempotency, rate limits and error format of /api/v1.
Updated 2026-10-10
Heartbeat monitoring
Monitor cron jobs, queue workers and backups by having them ping a secret URL.
Updated 2026-10-10
Notifications and routing
Channels, rules, deduplication, quiet hours, rate limits and escalation.
Updated 2026-10-10
Verifying signed webhooks
Headers, signature scheme and a verification example for outgoing webhooks.
Updated 2026-10-10
Status pages
Components, announcements, access control, subscribers and custom domains.
Updated 2026-10-11
Importing monitors from CSV
Supported formats, validation, deduplication and quota preview.
Updated 2026-10-10
Security model
Outbound security boundary, probe isolation, tenancy and credential handling for operators and customers.
Updated 2026-10-10
Site health crawls
What the bounded daily crawl checks, how ownership is verified, and the limits that protect your site.
Updated 2026-10-10
Multi-step API transactions and browser checks
How sequential API flows and headless browser checks work, what they measure, their limits and their cost model.
Updated 2026-10-10
Real user monitoring
Core Web Vitals from real visitors: what the script collects, what it never collects, sampling, quotas and how to read the dashboard.
Updated 2026-10-10
Longer explanations live in the guides.