Real AI agent use cases, with sources and setup prompts

Turn a tablet into a second Mac display and cast streams to your TV with your own apps

He built a SuperDisplay alternative for macOS that makes his Samsung tablet work as a secondary display, plus a specialized video streaming host and client and an Android TV app to cast it.

See pricing pageWeeksAdvancedSource linked

Source

RestartKernel on Hacker News · 2026-10-20

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

What they did

He built a SuperDisplay alternative for macOS that makes his Samsung tablet work as a secondary display, plus a specialized video streaming host and client and an Android TV app to cast it.

Result (as claimed)

His own apps beat Discord screenshare on quality and add features no existing app offers.

Tools they used

AI coding agentmacOSSamsung tabletAndroid TV

Cost: Pricing depends on the tools you pick; check each official pricing page.

Set it up

  1. Pick a contained repo or task

    Start on a branch or side project where mistakes are cheap.

  2. Install and configure

    Set up AI coding agent, macOS, Samsung tablet, Android TV. Read what it can run on your machine and limit permissions where possible.

  3. Run it on a real task

    Give it a well-scoped issue and let it work. Review the diff like any pull request.

  4. Add guardrails

    Keep tests and CI in the loop, and never let an agent push to main or touch production secrets unattended.

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: Turn a tablet into a second Mac display and cast streams to your TV with your own apps
What the original author did: He built a SuperDisplay alternative for macOS that makes his Samsung tablet work as a secondary display, plus a specialized video streaming host and client and an Android TV app to cast it.
Reported result (as claimed by the author): His own apps beat Discord screenshare on quality and add features no existing app offers.
Source: https://news.ycombinator.com/item?id=50164117
Tools they used: AI coding agent, macOS, Samsung tablet, Android TV
Category: Dev & ops

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 remove ads and bloatware from your smart TV with AI · How to build a smart home and voice assistant with AI agents · How to use AI agents for Linux, servers and homelabs

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