DiffHook

DiffHook is a real-time website change monitoring platform that watches the pages, prices, policies and APIs a business depends on and alerts people or systems the instant something changes. It is built for teams whose revenue, compliance or operations depend on catching web changes quickly, from sales and legal teams to developers running automation workflows.

A user points DiffHook at any URL, a webhook destination, and a check interval, and DiffHook polls the page on schedule, comparing each snapshot against the last. Smart filters cut through layout changes and cosmetic noise so only meaningful differences trigger an alert, and a structured event is sent to Slack, a CRM, or any workflow tool with a full audit trail.

DiffHook can track a full page or zoom in on a single element such as a price, a clause or a status badge, across web pages, JSON APIs, sitemaps and RSS or Atom feeds. AI alert modes can watch for price, availability or new-item changes, or follow a custom prompt, and delivery is signed with automatic retries and a complete change history.

DiffHook's Free plan gives 5 monitors with daily checks at $0 a month, a Starter plan is $12 a month for 20 monitors with 15-minute polling, a Pro plan is $29 a month for 100 monitors with 5-minute polling and AI alerts, and a Business plan is $79 a month for 500 monitors with 1-minute polling and unlimited seats. Enterprise customers can run DiffHook on private cloud, single-tenant or on-prem infrastructure by contacting the company.

Use cases

• Catching competitor pricing and packaging changes within minutes
• Tracking regulatory filings and compliance portals continuously
• Monitoring vendor status pages before customers notice an outage
• Triggering outbound sales when a prospect shows a buying signal
• Spotting unauthorised claims or copied brand content