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How to compare prices and stock across product pages with Scout

Give Scout two or more products and get back a comparison of price and availability.

Authorization notice. Scout is dual-use. Only use it on software, sites and systems you own or have explicit permission to test.

Who it is forA shopper or buyer who needs to choose between items on different pages and does not want to copy numbers by hand.

The problemComparing price and stock across separate pages means opening each one, reading the figures and recording them.

The outcomeA written comparison of price and stock for each item, stating which is cheaper, with a replay to check the figures.

What you need first

  • Node 22 or later
  • An Outcrawl key from outcrawl.ai for the cloud browser (1,000 free credits every month, no card needed)
  • A model service that speaks the standard chat completions API, hosted or running on your own computer
  • Optional: a local browser via `npm i playwright-core && npx playwright install chromium` if you do not use the cloud

Steps

  1. Run npm i @outcrawl/scout in your project folder.
  2. Run export OUTCRAWL_API_KEY=your-outcrawl-key, then set SCOUT_BASE_URL, SCOUT_API_KEY and SCOUT_HANDS_MODEL.
  3. Copy the README's example into task.ts and replace the task with your two product names or links.
  4. Run npx tsx task.ts.
  5. Check result.data against the replay at result.replayUrl before you buy.

Prompt for your agent

Use the outcrawl/scout repo to build task.ts that finds <product A> and <product B> on <site URL> and compares their price and stock, then states which is cheaper. Print result.data and result.replayUrl. Verify that both prices in the answer match the replay before trusting the result.

Caveat. Scout reads what the page shows at run time, so prices and stock can change between the run and your purchase.

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