Collect prices from permitted dynamic product pages
Preserve product identity, variant, currency, region, and observation time alongside each price.
Before the first run
- An approved source list and access policy
- A product identifier and variant mapping
- A price schema that distinguishes tax, shipping, and availability
Define what the agent can do.
Read-only collection from permitted sources. Checkout, account changes, and bypassing access restrictions are outside scope.
The implementation sequence
- 01
Choose the supported data path
Check for a feed, API, or licensed export before opening a browser. Use interface collection only where the approved path requires it.
- 02
Set the observation context
Record region, currency, account state, quantity, and product variant. Do not silently accept a default variant that differs from the requested item.
- 03
Read the displayed offer
Collect the visible price and any disclosed tax, shipping, promotion, or availability context. Mark undisclosed components as unknown rather than estimating them.
- 04
Validate the row
Confirm the product identifier and units, retain the source URL, and distinguish sale price from list price. Reject impossible or malformed values for review.
- 05
Publish a dated observation
Store the observation timestamp and context with the row. Later changes create new observations rather than overwriting the historical record without a trace.
Stop for human approval
Approve source scope and data use. Review ambiguous price components and any external publication based on the collected observations.
Approval design principles →Implementation options
Playwright
Deterministic browser automation and testing across Chromium, Firefox, and WebKit.
Verified Sep 27, 2026Browser infrastructureBrowserbase
Managed browser sessions with observability, proxies, and computer-use integrations.
Verified Sep 27, 2026Agent & orchestrationStagehand
A browser SDK that mixes natural-language actions with deterministic browser code.
Verified Sep 27, 2026Agent & orchestrationBrowser Use
An open-source browser agent library with managed agents and cloud browser sessions.
Verified Sep 27, 2026Failure & recovery
- Wrong variant
- Promotion conditions omitted
- Currency confused with locale
- Out-of-stock price treated as a purchasable offer
What drives cost
- Variant-region combinations
- Interactive selection steps
- Unknown price-component review
Related use cases
Sources & verification
Reviewed Sep 27, 2026. Architecture recommendations are editorial analysis; linked vendor documentation supports the underlying capability and safety facts.
- playwright.dev/docs/locators
- docs.stagehand.dev/v4/first-steps/introduction
- developers.openai.com/api/docs/guides/tools-computer-use