Real AI agent use cases, with sources and setup prompts

Have your agent scan invoices for subscriptions it could replace

Each month he asks Grok Bot to check his Gmail invoices, design a bot squad that copies the core features of any subscription it could compete with, and test it blind with a separate eval bot.

$30/mo1 hrIntermediateSource linked

Source

@shawnbuilds on X · 2026-10-16

Written in our own words. Credit to the original author. Link checked 2026-10-23.

What they did

Each month he asks Grok Bot to check his Gmail invoices, design a bot squad that copies the core features of any subscription it could compete with, and test it blind with a separate eval bot.

Result (as claimed)

He says it replaced a $399 a month subscription, $4,788 a year.

Tools they used

Grok BotGmail

Cost: Grok Bot: from $30/mo.

Set it up

  1. Gather the documents

    Collect statements, bills, invoices or tax documents for the period you want reviewed.

  2. Ask for an audit, not actions

    Have Grok Bot list findings, amounts and suggested next steps before it does anything.

  3. Approve each action

    Approve cancellations, disputes or payments one at a time. Never give an agent open-ended access to move money.

  4. Track the result

    Record what changed and what you saved so you can check it next month. This is not financial advice.

Copy the full setup prompt

Paste into your agent and it will walk you through the setup, asking before anything that sends, posts or spends.

You are helping me set up this AI use case end to end in Claude Code.

Goal: Have your agent scan invoices for subscriptions it could replace
What the original author did: Each month he asks Grok Bot to check his Gmail invoices, design a bot squad that copies the core features of any subscription it could compete with, and test it blind with a separate eval bot.
Reported result (as claimed by the author): He says it replaced a $399 a month subscription, $4,788 a year.
Source: https://x.com/shawnbuilds/status/2111103275684733147
Tools they used: Grok Bot, Gmail
Category: Money

Please:
1. Ask me 3 short questions about my situation (accounts I have, budget, what I want the output to look like).
2. Propose a step-by-step plan using these tools or cheaper alternatives, with the time and cost of each step. Use official pricing pages; say "check pricing" if unsure.
3. Then do the setup with me one step at a time, waiting for my OK before anything that sends messages, posts publicly, spends money or deletes data.
4. Finish with a checklist to run it again next time.

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Guides for this use case

How to use AI agents for taxes, bills and budgets · How to set up Grok Bot agents for real work · How to build your own invoicing and bookkeeping app with AI · How to automate email and your inbox with AI agents

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