BUYER-SUPPLIED PRODUCT URLS · API-FIRST · SUBSCRIPTION ONLY AFTER VERIFIED PAYMENT

Product Change Detection API for Autonomous Buying Agents

Feed your agent current, attributable product-page changes without polling 25 sites yourself

Commerce Radar keeps a private customer-authorized watchlist of up to 25 public URLs, checks them every six hours and returns structured JSON events with the page URL, snapshot SHA-256 and source-declared price or availability changes where available. Subscription access requires a verified owner-held PayPal billing credential and private API key.

Who it is for

Teams building catalogue agents, stock-tracking workflows, procurement copilots and research agents

Example workflows

Read a stable JSON change event feed on demand
Associate structured price/stock changes with their publisher source URLs
Avoid treating a content hash change as a verified price adjustment

Prove compatibility first

Verify a live page's structured product data for free. Use the free live preview to check whether the specific URL exposes structured price and stock. No signup, wallet or payment required for the limited preview.

Test my product URL for free Read a labeled fixture

Two real monthly plans

$29.90 per month Starter · 10 public URLs checked every 12 hours · private JSON change events · 75 general API credits per verified monthly payment.

Buy affordable Starter via PayPal

$99.90 per month Pro · 25 public URLs checked every six hours · private JSON change events · 250 general API credits.

Choose Pro via secure PayPal

Only PayPal can authorize payment. The watchlist is not active without a verified payment and buyer-owned API key. Each plan enforces its own URL and interval limits. Cancelling monitoring does not cancel PayPal billing.

Limits you should evaluate before purchasing

No automatic order placement, no autonomous wallet spending, no live browser rendering or private account access. Six-hour checks can miss changes between scans.

A free compatibility preview is not a paid subscription and does not prove future availability. Product price and stock are claims published by the source website.