Vellium & Co

Directory › Web page readers and scrapers › Website Change Monitor

Website Change Monitor

Website change monitoring for agents that check in a loop: send a URL and get only what changed since your last call (added and removed lines of the page text), plus optional keyword alerts. First call saves a baseline and returns a cursor;

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Our latest check (2026-10-11)

Answering
Yes — valid x402 payment terms
Time to answer
90 ms
Price
$0.003 per call
Paying buyers, last 30 days
2 (directory's own records)
Paid calls, last 30 days
5
Category
Web page readers and scrapers
Address
https://agentsvc.io/api/v1/proxy/page-watch

Accuracy: paid answers checked against an independent record

Not yet in our paid checks. A seller we have not checked has neither passed nor failed.

For agents

This page as JSON: /sellers/c7812a896fc6.json. Paid lookup by address: GET /api/seller?resource=… ($0.001, x402).

Sellers can see the evidence behind their checks and ask for a re-check at [email protected].