CodexMost teams do not fail because they lack tasks. They fail because those tasks live everywhere, half-written, badly prioritized, and disconnected from the day’s real work. In this tutorial, you’ll build an AI assistant with Codex that takes messy task dumps, scattered notes, and vague intentions, then turns them into a clear daily plan you can actually follow. Not another chatbot that gives generic advice. A practical planning assistant that helps you decide what matters, what can wait, and what needs to happen.
You’ll build a lightweight task system your coding agent can actually run every day. It keeps your to-do list in one Markdown file, updates it automatically, and uses simple task rules.md file to learn how you want tasks sorted, rewritten, delayed, or prioritized. No bloated app. No complicated setup. Just one skill, one automation, and a daily plan that gets less dumb the more you use it.
In this guide, you’ll learn how to use Codex to build an AI taskmaster that checks Slack, Gmail, and your calendar every morning, then turns the mess into a prioritized to-do list. You can use Claude Code too. The process is the same. It learns from how you work, gets sharper with every use, and helps you start the day knowing exactly what deserves your attention first.
By the end of this tutorial, you'll be able to:
Instruct the agent to build the skill
Create the files and task rules
Run the skill once
Create the automation
Let's get started
