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AI agentsMedium2 weekends$100 to $500Web app

Price Pulse

Watches competitor product pages and emails you when their prices change.

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The idea

Small online sellers check competitor prices by hand. Price Pulse visits the product pages you list each day, uses AI to pull the price and stock status even when page layouts differ, and sends a digest of changes. Sellers react faster without spreadsheets.

Who it is for
Small ecommerce sellers in competitive niches
How it makes money
Subscription by number of tracked pages
Suggested stack
Next.js, MySQL, Tailwind, hosted on a small VPS
Launch cost
$100 to $500

Your first AI prompts

Paste these into Claude, Cursor or Lovable, in order. Check that each one works before moving on.

PROMPT 1 OF 3

Build a web app called Price Pulse. Start with login and a Tracked Pages list where the user adds a competitor URL, a label, and optionally their own matching product and price.

PROMPT 2 OF 3

Create a daily job that fetches each page, strips it to visible text, and asks an AI model to return JSON with product name, price, currency, sale flag and in stock status. Save a history row per check and flag changes from the previous check.

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PROMPT 3 OF 3

Send a daily email digest of changes with your price next to theirs, add a chart of price history per page, and add Stripe billing tiers by number of pages.

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The 10 step playbook

  1. 01Claim your ideaPut your name on it and unlock every prompt and the full playbook. Always free.
  2. 02Domain and nameBrainstorm a short name, check the .com, and register it.
  3. 03Trademark basicsSearch for conflicts before you fall in love with the name.
  4. 04AI build kickoffPaste the prompts below into Claude, Cursor or Lovable, one at a time.
  5. 05Server and hostingPick a host and have your AI walk you through setup.
  6. 06Backend and dataLogins, database and payments, one prompt at a time.
  7. 07Frontend and designScreens, colors and a simple logo that look professional.
  8. 08Go livePut it online, then submit to the App Store and Google Play if it is a mobile app.
  9. 09Marketing planLaunch posts, local outreach and your first 100 users.
  10. 10Launch and growShip it and add your live link to earn the Shipped badge.
Your full playbook for Price PulseEvery step spelled out for this idea, with the exact prompts to paste into your AI.
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