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Get an alert when a price drops or a page changes

โ€œI'm waiting for something to go on sale or come back in stock.โ€

Set up an AI watch on a product or page; it checks on a schedule and pings you only when something changes. Group items into one watch to save limits.

Fix it yourself in 3 steps

  1. List the items or pages and your target price or the change you care about.
  2. Set up a scheduled check (most assistants can do this) that alerts you by email or text.
  3. When it alerts, check the page and buy yourself.

Copy this prompt

Check these items daily: [links], and alert me only if the price falls below [target] or it's back in stock. Include the link and the old and new price. Don't buy anything or create accounts. Stop at the alert.

Fill in the [brackets]. Each prompt says when the AI should stop, so it doesn't wander off.

Agents people used for this: Dots, Alexa+, n8n, ChatGPT Agent.

Inspired by real examples collected at agentusecases.ai.

๐Ÿ“š 6 real stories of people doing this with AI agents

Collected at AgentUseCases.ai.

Tools for this

#1 ยท Our pick

Grok Bot

Best for: Chores that repeat โ€” done for you

The easiest AI helper for everyday people: show it a chore once โ€” a morning brief, checking a bill, watching for a refund โ€” and it keeps doing it while you're away, checking in only when it needs your OK. Works from the Grok app on your phone and computer (beta).

Visit Grok Bot โ†—
#2

ChatGPT

Best for: Widest feature set

OpenAI's assistant with the broadest feature set: voice, images, search and a large app ecosystem.

Visit ChatGPT โ†—
#3

Gemini

Best for: Google Workspace users

Google's assistant, woven into Gmail, Docs and Android. Strongest if you live in Google's apps.

Visit Gemini โ†—
#4

Claude

Best for: Writing, analysis, code

Anthropic's assistant: strong writing, analysis and coding, with projects and artifacts for longer work.

Visit Claude โ†—
#5

n8n

Best for: Self-hosted automation

Visual workflow automation you can self-host, with AI agent nodes. Popular with builders who want control.

Visit n8n โ†—
#6

Grok

Best for: Real-time info, everywhere you go

xAI's assistant with real-time X data โ€” on iPhone, Android, desktop, the web, X, and built into Tesla cars. Want it to do chores on its own? See Grok Bot.

Visit Grok โ†—