Real AI agent use cases, with sources and setup prompts

Build a bedtime sleep-sound app for your Chromecast that turns the screen off

After cleaning his Chromecast, Grok Bot built a small TV app so the family sleep-sound video always starts from the beginning, then sends the Roku remote's button presses over Wi-Fi to switch the screen off.

$30/mo20 minBeginnerSource linked

Source

@MrGeary08 on X · 2026-10-20

Written in our own words. Credit to the original author. Link checked 2026-10-20.

What they did

After cleaning his Chromecast, Grok Bot built a small TV app so the family sleep-sound video always starts from the beginning, then sends the Roku remote's button presses over Wi-Fi to switch the screen off.

Result (as claimed)

Done in about 20 minutes, he says; turning on the fan is next.

Tools they used

Grok BotChromecastRokuYouTube

Cost: Grok Bot: from $30/mo.

Set it up

  1. Define the job

    Say exactly what you want done and what the agent may and may not do on your behalf.

  2. Share only what is needed

    Give Grok Bot the minimum files or access required. Avoid sharing passwords in chat when a safer login flow exists.

  3. Review the plan

    Ask the agent to show its plan or draft before it acts, and approve each step that has real consequences.

  4. Check the result

    Confirm the outcome yourself (order placed, request sent, document understood) and keep a record.

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: Build a bedtime sleep-sound app for your Chromecast that turns the screen off
What the original author did: After cleaning his Chromecast, Grok Bot built a small TV app so the family sleep-sound video always starts from the beginning, then sends the Roku remote's button presses over Wi-Fi to switch the screen off.
Reported result (as claimed by the author): Done in about 20 minutes, he says; turning on the fan is next.
Source: https://x.com/MrGeary08/status/2112416303017300248
Tools they used: Grok Bot, Chromecast, Roku, YouTube
Category: Personal & life

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 build a custom Android TV or Google TV launcher with AI · How to set up Grok Bot agents for real work · How to make faceless YouTube videos with AI · How to set up an AI family assistant

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