I Open Sourced My macOS AI Agent After 6 Months of Solo Development
The Decision to Open Source
After six months of building a macOS AI agent solo, the codebase hit a point where keeping it closed stopped making sense. The features people wanted most - better accessibility API handling, support for more applications, refined error recovery - were exactly the kind of work that benefits from community input.
The fear is always the same: someone will take your code and outcompete you. The reality is different. Desktop agents are deeply tied to execution quality - how fast they ship updates, how well they handle edge cases, how responsive they are to user feedback. The code is table stakes. The speed of iteration is the moat.
What Happened After Opening Up
The first week was quiet. A few stars, a couple of issues filed. Then a developer in Japan submitted a PR that fixed a bug in the accessibility tree parser that had been annoying users for weeks. Another contributor added support for an application that wasn't on the roadmap until Q3.
Within a month, the agent supported more applications than it would have after another six months of solo work. Contributors found bugs in edge cases that a single developer would never encounter in their own workflow.
Trust Through Transparency
For a desktop agent - software that literally watches your screen and controls your computer - trust is everything. When the code is open, anyone can verify what data the agent accesses, where it sends information (nowhere, in this case), and what permissions it actually uses.
Closed-source desktop agents ask users to trust a black box with their entire digital workspace. Open source lets them verify.
What I'd Tell Other Solo Developers
If your competitive advantage is in the code itself, keep it closed. If your advantage is in how fast you ship, how well you understand users, and how quickly you iterate - open source amplifies all of those. You get more eyes on bugs, more diverse use cases, and a community that genuinely wants the project to succeed.
Fazm is an open source macOS AI agent. Open source on GitHub.