Know when competitor product pages actually change.
For independent retailers and autonomous buying agents: monitor public product pages, detect publisher-declared price and stock updates, and query private, machine-readable change evidence.
Try your actual product URL free — no account View real sample format
$29.90 / month Starter · 10 URLs every 12 hours + 75 API credits
Start Starter via secure PayPal
$99.90 / month Pro · 25 URLs every 6 hours + 250 API credits
Choose Pro via secure PayPal Free data sample
Choose a recurring PayPal subscription or a one-time 30-day Base USDC purchase below. Viewing this page or fetching the sample creates no charge. You control your URL list and may stop monitoring at any time. Cancel recurring PayPal billing separately inside PayPal; prepaid Base access has no automatic renewal.
For focused buyers: Competitor price tracking for retailers · Product change feeds for autonomous agents.
10 or 25 monitored URLs
Starter checks 10 URLs every 12 hours; Pro checks 25 every 6 hours. Static public product and documentation HTML only; duplicate URLs rejected.Plan-defined recurring checks
Redis-backed scheduler honors your verified plan-defined 12-hour or 6-hour interval, with a single owner per watch across API servers.Source-aware price + stock
Schema.org Product and Open Graph are parsed when available. Ambiguous unstructured prices are not invented.Private JSON and CSV exports
Price changes, inventory status changes and source hash events through an authenticated JSON API; export current products or the last 100 change events to spreadsheet-friendly CSV.75 or 250 API credits
Starter includes 75, Pro includes 250 general credits per verified PayPal payment or prepaid 30-day Base USDC purchase. Credits are not cash.No automatic wallet payments
Monitoring does not issue x402 charges, email cold leads or buy from third-party agents.Check one of your real public product pages for free
Check up to three different public product URLs per day, with a global limit of 60 free previews per day. We show which structured price and stock fields are genuinely available before you subscribe; a page without those fields is not treated as suitable for price/stock monitoring.
No preview requested.
A valid public URL is required. The preview does not subscribe or bill you.
Agents: buy 30 days with Base USDC — no PayPal account
One-time prepaid monitoring, available to agents with an explicitly approved Base USDC wallet budget. Starter $29.90 USDC covers 10 URLs every 12 hours for 30 days and 75 credits; Pro $99.90 USDC covers 25 URLs every 6 hours for 30 days and 250 credits. This is not a recurring wallet payment. Renewal requires a fresh authorized purchase.
No invoice created. Creating an invoice does not charge or sign your wallet.
Only click after choosing a real buyer-controlled wallet and approved budget. The server will return the exact native Base USDC token, recipient, atomic amount, expiry and a private API key. Save the key securely: it is displayed only during the checkout flow. Review the invoice and separately authorize payment in your own wallet. Do not transfer funds using another network, a different token or an expired invoice. Activation requires confirmed on-chain payment; an unpaid invoice grants no access.
Agent-friendly endpoints: Base USDC plan and integration instructions · Live wallet token and payment details. No agent is contacted or charged by viewing this page.
Activate your private monitoring feed
After PayPal confirms the subscription or your Base USDC invoice receives a verified on-chain payment, use your buyer API key and matching order ID to activate monitoring. For Base USDC, keep the API key returned with the invoice and enter its invoice ID after confirmation. Configure 1–10 URLs on Starter or 1–25 on Pro; the server enforces the URL and scan limits of each verified plan. Credentials remain in this browser form, never local storage.
No private data loaded.
Stopping monitoring never creates a refund. For PayPal subscriptions, cancel recurring billing separately inside PayPal. Base USDC access is prepaid for 30 days with no automatic renewal. Monitoring pauses once verified access expires.
Direct API integration
curl -X POST 'https://bounty-engineer-x402-prod.onrender.com/commerce-radar/v1/watchlist' -H 'authorization: Bearer YOUR_VERIFIED_BUYER_API_KEY' -H 'content-type: application/json' --data '{"order_id":"be_YOUR_CHECKOUT_ORDER_ID","urls":["https://example.com/product-a"]}'GET /commerce-radar/v1/watchlist with your bearer token for the current feed. DELETE the same route to remove the watchlist. POST can replace the URL set. PayPal access requires verified server-to-server subscription status. Base access requires a verified exact native USDC invoice payment and the matching buyer key; redirects do not activate access.
What it does not do
No browser-based JavaScript rendering, login, CAPTCHA or paywall bypass. Structured product fields are publisher declarations and cannot establish that a listed product can actually be purchased at the claimed price. Price/stock events may be unavailable when a website omits structured metadata. Scans depend on publicly reachable sites; there is no uptime SLA or guarantee that all changes between checks will be observed.