Real AI agent use cases, with sources and setup prompts

Keep your Mac awake while coding agents work with a menu bar app

A marketer got tired of jiggling his trackpad so Claude Code could keep running, so he made Midnight Oil, a small macOS app that lives in the menu bar and keeps the Mac awake while agents, builds and downloads finish.

$17/mo1 afternoonBeginnerSource linked

Source

@coreyhainesco on X · 2026-10-13

Written in our own words. Credit to the original author. Link checked 2026-10-22.

What they did

A marketer got tired of jiggling his trackpad so Claude Code could keep running, so he made Midnight Oil, a small macOS app that lives in the menu bar and keeps the Mac awake while agents, builds and downloads finish.

Result (as claimed)

Shipped as a menu bar app; long agent runs no longer stop when the Mac goes to sleep.

Tools they used

Cost: Claude Code: from $17/mo.

Set it up

  1. Write a one-page brief

    Describe the app in plain words: who it is for, the 3 core screens or actions, and what "done" looks like.

  2. Start the project with your agent

    Open Claude Code and paste the brief. Ask it to propose a stack and a file plan before writing code.

  3. Build one slice at a time

    Ship the smallest working flow first, run it, then add features one by one. Commit after each working step.

  4. Test it like a user

    Click through on desktop and phone. Ask the agent to add basic tests and fix anything that breaks.

  5. Check security and ship

    Keep keys in environment variables, check auth and database rules, then deploy and share the link.

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: Keep your Mac awake while coding agents work with a menu bar app
What the original author did: A marketer got tired of jiggling his trackpad so Claude Code could keep running, so he made Midnight Oil, a small macOS app that lives in the menu bar and keeps the Mac awake while agents, builds and downloads finish.
Reported result (as claimed by the author): Shipped as a menu bar app; long agent runs no longer stop when the Mac goes to sleep.
Source: https://x.com/coreyhainesco/status/2110014203918733594
Tools they used: Claude Code, macOS
Category: Vibe coding & apps

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 Mac menu bar app with AI · How to vibe code an app with Claude Code · How to run multiple coding agents together · How to build AI agents for SEO and ads

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