JevMade field notes / Architecture and workflow guide

How to build a fast AI assistant that controls your computer

This guide explains how to build an AI assistant that controls a computer. It shows how the software reads screens, makes cheap choices from a list, and safely records its steps for later review.

Original by Aaron LevinBrowser use

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Credits and license

“typesafe-computer-use” by Aaron Levin. Read the original source.

This expanded guide is an AI-narrated adaptation of the source’s essential explanation, examples and caveats, not a word-for-word reading. The synthetic voice does not imitate the author or imply their endorsement.

License: MIT

MIT License

Copyright (c) 2026 Aaron Levin

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

Our summary

This project is a guide and software package for creating an AI assistant that operates a computer. A person would use it to reach a typed goal, like finding cheap tickets on a website, while keeping costs low and speeds high.

The software reads web pages directly and scans desktop screens for text. It uses Jev, an AI tool that chooses the next action from a list of options rather than writing an answer. If an action changes the screen, it takes a fresh snapshot before moving on.

The software saves a record of every action, but it refuses to restore an unsafe session. It requires a private access code, called an API key, to work. The Windows version is experimental, and the software cannot read passwords.

Key takeaways

Always take a new snapshot of the screen after an action changes what is visible.
Use Jev to pick actions from a list instead of asking an AI to write plans.
Save records of every step so you can safely review the automated tasks later.

More guides →See the experiments →