AI agent / always-on

It watches.
You decide.

Diffwatch is an autonomous AI agent that monitors any website and tells you when something actually changes — not when a timestamp updates or an ad rotates.

No account needed. We'll email you the second anything changes.

Or 📡 install the one-click bookmarklet to watch any page directly from your browser.

diffwatch.ai/monitor
change detected
Diffwatch Alert
Pricing section updated — 3 lines changed, 1 removed. Competitor raised Pro tier by $10.
2 min ago

Diffwatch is watching right now

Real changes detected from public pages — updated every 30 seconds.

Loading changes…
Watch any page like this — free, no signup →  ·  See all changes →

Popular use cases

every minute, every hour, every day — you choose the rhythm
01

How it works

01

Add a URL

Drop in any public URL. Diffwatch immediately takes a baseline snapshot and starts watching.

any public page · supports JavaScript-rendered sites
02

AI scans, constantly

Your Diffwatch agent loads every page as a browser would — checking what changed at the structural and visual level.

visual diffing + content analysis · filters timestamps, ads, noise
03

You get one alert

If something actually changed, you receive a plain-English summary: what changed and why it might matter for your work.

email · Slack · webhook · JSON payload to any endpoint
02

Built for people who act first

Competitor Intelligence

Track pricing pages, landing page messaging, feature announcements, and hiring signals. Know before your team does.

selector .pricing-card .price

E-commerce Tracking

Monitor product availability, price drops, and inventory changes. Never miss a restock or a sale.

text Add to cart

Regulatory & Legal

Watch government portals, compliance pages, and terms of service documents for updates that affect your business.

selector #revision-date

Recruiting & Talent

Track job boards, career pages, and team listings for signals — who's hiring, what's changing, who's moving.

text Apply now
the problem

Most people check the same five websites every morning. They refresh. They scroll. They scan for what changed. It takes twenty minutes and most days, nothing is different.

the premise

What if you had an employee whose only job was to watch those five sites and tell you only when something actually happened?

what we built

Diffwatch is that employee. An AI agent that never sleeps, never gets bored, and never sends you a "something changed" alert without an explanation.

Stop watching. Start knowing.

Diffwatch runs as an autonomous AI employee — watching your sources, filtering the noise, and telling you what matters.

autonomous · intelligent · always-on