The Most Useful AI Agent Is Embarrassingly Simple
The Most Useful AI Agent Is Embarrassingly Simple
Everyone is building multi-model orchestration systems with complex planning loops, tool chains, and memory architectures. The most useful agent I have built reads the accessibility tree and clicks buttons for repetitive admin tasks.
That is it. No RAG pipeline. No vector database. No multi-agent consensus protocol. Just an agent that can see what is on screen and perform the same sequence of clicks and keystrokes you do fifty times a week.
Why Simple Wins
The admin tasks that eat your day are not intellectually complex. They are mechanically tedious. Updating CRM records after calls. Filling out the same expense report template. Copying data between apps that do not have an API integration. Moving files into the right folders with the right naming conventions.
Each of these tasks takes two to five minutes. None of them justify building a custom integration. But collectively, they add up to hours every week. An agent that can watch you do the task once and repeat it handles all of them.
The Accessibility Tree Advantage
The accessibility tree gives the agent a structured understanding of every UI element on screen. It knows that element is a text field, that one is a dropdown, and that button submits the form. This is more reliable than screenshot-based approaches because the agent is working with semantic data, not pixel patterns.
When a button moves from the left side of the toolbar to the right, screenshot-based agents break. Accessibility-based agents do not care - the button still has the same label and role.
The Lesson
Complexity is not a feature. The agents that people actually use daily are the ones that solve boring, specific, repetitive problems. The accessibility tree provides just enough capability to automate these tasks without requiring custom integrations for every app.
Build the simple thing first. You will be surprised how far it gets you.
- Boring AI Agent Saves More Time
- Boring Automation Tasks AI Agent
- Accessibility API vs Screenshot Computer Control
Fazm is an open source macOS AI agent. Open source on GitHub.