Real AI agent use cases, with sources and setup prompts

Build and ship a native Swift menu bar app solo with Claude Code and Codex

A solo developer builds FavTray, a native Swift and SwiftUI menu bar app, with Claude Code and Codex. He shipped versions 2.1 and 2.2 on consecutive days and still runs and tests every change himself.

$17/moWeeksIntermediateSource linked

Source

@akashsairaja on X · 2026-10-19

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

What they did

A solo developer builds FavTray, a native Swift and SwiftUI menu bar app, with Claude Code and Codex. He shipped versions 2.1 and 2.2 on consecutive days and still runs and tests every change himself.

Result (as claimed)

Two releases in two days; his rule is that agents speed up shipping but you still own what ships.

Tools they used

Cost: Claude Code: from $17/mo; OpenAI Codex: free plan, paid from $8/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: Build and ship a native Swift menu bar app solo with Claude Code and Codex
What the original author did: A solo developer builds FavTray, a native Swift and SwiftUI menu bar app, with Claude Code and Codex. He shipped versions 2.1 and 2.2 on consecutive days and still runs and tests every change himself.
Reported result (as claimed by the author): Two releases in two days; his rule is that agents speed up shipping but you still own what ships.
Source: https://x.com/akashsairaja/status/2112217208327680059
Tools they used: Claude Code, OpenAI Codex, SwiftUI, 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.

The Daily 5

Get five new use cases tomorrow morning

Free. Real sources. Unsubscribe any time.

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 use Claude Code and Codex together · How to build an iPhone or Android app with AI

Related use cases