AI Change Monitor — What Changed & Does It Matter

Watch any list of URLs and get structured, noise-filtered diffs every run — with optional AI significance summaries that tell you in plain English what changed and whether it matters.

Built for people who watch pages that matter: competitor pricing, terms of service, regulator announcements, tender boards, documentation, job posts.

Why this one

1. Noise-filtered by default. Timestamps, view counters, cookie banners and other churn are ignored — you get alerted on substance, not clutter.
2. AI summaries, your key, your control. Turn on aiSummary and supply your own Anthropic API key: each change gets a one-sentence summary + significance rating (low/medium/high). Your key is used per-run and never stored.
3. Webhook-ready. POST every change record to Slack relays, n8n, Make, Zapier or your own endpoint.
4. Respectful by design. respectRobotsTxt (on by default) skips pages that disallow generic crawlers. No personal data is collected — ever. Output is page text diffs only.
5. Schedule it. Pair with Apify Schedules for hourly/daily watching.

How it works

YOU CONFIGURE              EACH SCHEDULED RUN              YOU RECEIVE
 ─────────────────────      ──────────────────────         ────────────────────────
 urls: [ ... ]         ──►  fetch each page          ──►  one JSON record per URL
 cssSelector (optional)     strip boilerplate/noise          • no_change
                            compare to last snapshot          • changed + exactly what
 + aiSummary (your key)                                         text was added / removed
 + webhookUrl          ──►  optional AI summary        ──►    • + AI summary & low/med/
                            optional webhook POST                high significance
                                                              • baseline_captured

Pair with Apify Schedules to run it on any cadence; route changed records to Slack, n8n, or your own endpoint via webhookUrl.

Output record

{
  "url": "https://example.com/pricing",
  "status": "changed",
  "added": ["Pro plan now $29/mo"],
  "removed": ["Pro plan $19/mo"],
  "ai": { "summary": "Pro plan price increased from $19 to $29 per month.", "significance": "high", "reason": "Pricing change directly affects purchasing decisions." },
  "previousSnapshotAt": "2026-07-18T06:00:12.000Z",
  "checkedAt": "2026-07-19T06:00:09.000Z"
}

First run per URL captures a baseline (baseline_captured); changes are reported from the second run onward.

Pricing

Pay-per-event: a small fee per page check, plus a small fee per AI summary generated. No subscription, no minimum.

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Maintained with automated daily canary checks. AI-powered tooling, human-supervised reliability. Support: jakeatthekeyboard@gmail.com