Word-level diffs with a dated record

Find out your supplier changed their terms before your customers do

Every vendor reserves the right to change their terms, and most satisfy that obligation by updating a page. The notice you were promised is frequently a revised date at the top of a document nobody reads.

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How do you monitor changes to terms and policies?

Watch the supplier's published terms, privacy policy, DPA and subprocessor list for text changes. When a clause is reworded you get a word-level diff showing exactly which sentences moved, plus a dated image. It closes the gap between a vendor updating a page and you discovering it during an audit.

Supplier terms are a live document pretending to be a static one. Liability caps move, data locations change, subprocessors are added, and the mechanism for telling you is usually a "last updated" line you would have to visit the page to see.

For anyone with data protection obligations this matters concretely. If your processor adds a subprocessor in another jurisdiction, your own compliance position changed the moment they published it — not when you found out.

This guide covers the four documents worth watching per supplier, how to catch a change buried in a long legal page, and what to keep so you can show when you knew.

What to watch

Four documents per supplier

Per critical supplier. A dozen suppliers is comfortably inside a $5 plan.

The subprocessor list

The one that changes most and matters most. New subprocessors mean new jurisdictions, new data flows and often a new assessment on your side. Many vendors commit to publishing changes here as their only notice.

The data processing agreement

Where the substantive obligations live. Changes are less frequent but far more consequential, and they are rarely announced.

The privacy policy

Data uses, retention periods and third-party sharing. Also the page most likely to be quietly broadened.

The terms of service

Liability caps, indemnities, termination rights and the clause reserving the right to change the terms in the first place.

Start with the subprocessor lists of your three most critical processors. That is three watches and covers the change most likely to create an obligation for you.

Making it work

Catching a clause change in a long document

Legal pages are long, and a meaningful change is often one sentence.

Watch the document body, below the date stamp

Most policies carry a "last updated" line. Include it and you are alerted on every review; select below it and you are alerted only when the text moves.

Do not set a change threshold too high

This is the opposite of a marketing page. A change of a few words — "may" to "will", a new named subprocessor — can be the entire point. Keep the threshold low or off for legal documents.

Read the diff, not the summary

Every recorded change shows the exact words added and removed. On a legal page that precision is the product; a paraphrase would be worse than useless.

Keep the record

The last thirty versions of each page are retained with dated images. When someone asks when a clause changed, that is the answer.

Being honest

The limits

Two of these are common enough to check before you subscribe.

PDF terms are not compared

Plenty of vendors publish their DPA as a PDF. We watch the page linking to it, so a replaced or renamed document shows as a change, but the text inside the PDF is not diffed.

Terms behind a login or a portal

Enterprise agreements in a customer portal cannot be reached by a hosted tool. Public terms pages generally can.

It does not assess the change

You get the words. Whether the new clause is acceptable is a judgement for you or your counsel.

It is not a vendor management system

No questionnaires, no risk scoring, no register. It watches pages and tells you when they changed.

How it works

How to monitor a supplier's terms and policies

Set up alerts for changes to terms, privacy policies, DPAs and subprocessor lists.

1

Start with the subprocessor list

It changes most often and is most likely to create an obligation on your side.

2

Select the document body

Click below the "last updated" stamp so a review cycle does not alert you.

3

Keep the threshold low

On legal text a few changed words can be the whole point, so do not filter small changes out.

4

Check daily

Policies do not change hourly. Daily is timely enough and keeps the alerts meaningful.

5

Route to whoever owns the vendor

Per-watch alerting means each supplier reaches its own owner rather than a shared inbox.

6

Repeat for the DPA, privacy policy and terms

Four watches per critical supplier; a dozen suppliers fits comfortably inside a $5 plan.

Typically about 4 minutes from start to finish.

Pricing

What it costs

Uptime monitors, watched pages and heartbeats each get their own allowance, so adding a page watch never costs you a monitor. SSL and domain checks ride along with the monitor they belong to and use nothing extra.

PlanMonitorsWatched pagesHeartbeatsFastest intervalAlert channelsPrice
Free111Every 30 minutes1 email address$0
Founding Member first 20 only252525Every 5 minutesEmail + webhook & chat$5/mo
Basic101010Every 10 minutesEmail + webhook & chat$8/mo
Growth505050Every 5 minutesEmail + webhook & chat$19/mo
Pro100100100Every 60 secondsEmail + webhook & chat$34/mo

Annual billing is cheaper on every paid tier. The pricing page is the authoritative list.

See it

What an alert actually looks like

Every recorded change is compared word by word and kept with a before-and-after image. This is the real output, shown with worked example data.

competitor.com/pricing Watching: Pricing table
Pro plan — $49 per month
+ Pro plan — $39 per month
+ Save 20% with annual billing

Price fell from $49 to $39, and an annual discount was added.

2 words added · 1 removed · 4.1% of the watched region

retailer.com/product/… Watching: Availability
Out of stock
+ In stock — ships tomorrow
+ Add to basket

The item is available again and the basket button returned.

6 words added · 3 removed · 12.5% of the watched region

supplier.com/subprocessors Watching: Subprocessor list
~ Data is processed in the EUthe EU and the United States
+ Added: Northwind Analytics Inc. (United States)

A new subprocessor was added in another jurisdiction.

9 words added · 2 removed · 1.8% of the watched region

Worked example — not live data. Start monitoring free
Alerts

Where we can reach you

The free plan sends to one email address. Every paid plan adds the chat and webhook channels below, with 2 to 10 destinations depending on the plan. However many alerts you receive, the price does not change — nothing here is metered or charged per alert.

Email Before and after images inline
Browser push On a phone or desktop lock screen
RSS feed Every recorded change, as a feed
SlackPaid Through an incoming webhook
Microsoft TeamsPaid Through an incoming webhook
DiscordPaid Through an incoming webhook
TelegramPaid Straight to a chat or channel
FlockPaid Through an incoming webhook
WebhooksPaid Post to anything you run yourself

There are no voice calls and no SMS. If a phone call at 3am is a hard requirement, say so before you subscribe — we would rather tell you now than refund you later.

FAQ

Terms and policy monitoring questions

How do I know when a supplier changes their terms?

Watch the published page. When the wording changes you get a word-level diff showing which sentences were added, removed or reworded, plus a dated image. It does not depend on the vendor remembering to email you.

Why monitor subprocessor lists specifically?

Because a new subprocessor can change your own compliance position the moment it is published — new jurisdiction, new data flow, often a new assessment. Many vendors treat updating that page as sufficient notice.

Can it monitor a DPA published as a PDF?

Not its contents. We watch the page that links to it, so a replaced or renamed document appears as a change, but the text inside the PDF is not compared. This is a real limitation and worth checking against how your suppliers publish.

How often should I check a policy page?

Daily. Policies do not change hourly, and a daily check keeps the alerts meaningful rather than routine.

Should I set a change threshold?

Keep it low or off for legal documents. Unlike a marketing page, a change of a few words — a "may" becoming a "will", one new named subprocessor — can be the most important thing that happened all quarter.

Can I show when a clause changed?

Yes, within the retained history. Each recorded change is timestamped with a full-page image and a word-level diff, and the last thirty versions of each page are kept.

How many suppliers can I cover?

Four documents per supplier means the $5 plan's 25 watched pages covers about six critical suppliers. Growth covers around twelve, Pro around twenty-five.

Does it tell me whether the new terms are acceptable?

No. It tells you precisely what changed. Whether that is acceptable is a judgement for you or your counsel, and we would rather show you the words than paraphrase a clause you are accountable for.

Keep reading

Related monitoring guides

Last updated August 4, 2026 · Written by Amit Gupta, founder of MonitoringDaddy

AG
Written by

Amit Gupta

Amit Gupta is the founder of MonitoringDaddy , a website and infrastructure monitoring platform built by Toto Dream Marketing. He writes about uptime, change detection, SSL and domain monitoring, and helps teams keep their websites fast, secure and online.

Watch your processors' subprocessor lists.

Free plan covers one. $5/mo covers 25 pages — about six suppliers, fully documented.