Real AI agent use cases, with sources and setup prompts

Get pinged on your phone and watch the moment your Codex limit resets

Refill is a tiny Mac menu bar app that turns your Codex 5-hour and weekly resets into Apple Reminders, so your Mac, iPhone and Watch ping you when you can code again.

Free tier5 minutesBeginnerSource linked

Source

@fenillramoliya on X · 2026-10-18

Written in our own words. Credit to the original author. Link checked 2026-10-18.

What they did

Refill is a tiny Mac menu bar app that turns your Codex 5-hour and weekly resets into Apple Reminders, so your Mac, iPhone and Watch ping you when you can code again.

Result (as claimed)

Shared by the builder.

Tools they used

OpenAI CodexmacOSApple Reminders

Cost: OpenAI Codex: free plan, paid from $8/mo. Checked 2026-10-14.

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 OpenAI Codex, macOS, Apple Reminders. 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: Get pinged on your phone and watch the moment your Codex limit resets
What the original author did: Refill is a tiny Mac menu bar app that turns your Codex 5-hour and weekly resets into Apple Reminders, so your Mac, iPhone and Watch ping you when you can code again.
Reported result (as claimed by the author): Shared by the builder.
Source: https://x.com/fenillramoliya/status/2111779591555883341
Tools they used: OpenAI Codex, macOS, Apple Reminders
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 run multiple coding agents together ยท How to control coding agents from your phone

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