FetchDelta Agent-Native Monitoring

Watch up to five public pages daily for 30 days.

One x402 payment creates the watch, runs the first baseline immediately, and returns a private bearer token that an agent can use to poll changes without an account or another payment.

$0.50one time · Base USDC · 30 days
Up to 5 URLsDocs, changelogs, release notes, pricing, policy, or other public HTTP pages.
Daily checksFetchDelta stores the baseline and records additions, removals, failures, and timestamps.
Private pollingThe activation response returns a one-time bearer token and a status URL.

Choose the pages

Use example.com All pricing API docs

Agent flow

GET https://fetchdelta.com/api/page-watch-30d?url=https%3A%2F%2Fexample.com%2F&cta=page-watch-sample-checkout
→ 402 payment requirements
→ retry with PAYMENT-SIGNATURE
→ save watch.statusUrl and access.authorization

GET watch.statusUrl
Authorization: Bearer <returned-token>