Build an AI Secretary That Finds Open Action Items and Plans Your Day (works with Slack + Gmail + Calendar)

In this guide, you will learn how to use Codex or Claude Code to build an AI taskmaster that checks Slack, Gmail, and your calendar every morning. It turns the mess into a prioritized to-do list that gets better every day you use it.

• Operators who get tasks from email, Slack, and meetings and need one place to see what actually matters.
• Founders and team leads who want a morning list without maintaining another to-do app by hand.
• AI power users who want their agent to learn from feedback instead of repeating the same bad suggestions every day.

You will build a simple one-skill, one-automation task tracking system that works with any coding agent. It automatically updates your to-do list each day in a single Markdown file, then improves based on your feedback in a task-rules.md guidance file.

• Codex or Claude Code.
• Connected Gmail, Slack, and Calendar access.
• A Markdown note app like Obsidian or Cursor.
• Automation or scheduled task support.

• Create a weekly audit skill that scans your task list.
• Find repeated tasks that keep showing up.
• Turn repeated tasks into candidates for future AI automations.
• Use the same loop for other workflows: create a skill, run it once, automate it, then improve it with feedback.