QuietDiff monitors the exact part of a page or JSON endpoint you care about and alerts you only when it really changes. It double-checks every change before notifying you and shows the old and new values side by side. Alerts are sent via email, signed webhooks, or Slack. Developers and AI agents can connect through a REST API with an OpenAPI spec or a hosted MCP server. Paid plans offer JavaScript rendering for JS-heavy sites, and Pro and Agency plans include AI summaries that filter out trivial changes like timestamps. A free tier with 10 monitors is available without a credit card. View startup