01
About
I'm David J Knudson, a software engineer building personal AI infrastructure on Apple hardware. I work on Tsvetok, a personal AI assistant that runs on a Mac mini in my home, and write about the patterns that come out of it.
Based in Los Angeles. Remote-first, working across US time zones.
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Writing
- I Let Three Coding Agents Near My Whole Digital Life (Safely) ↗
- I thought a different model would catch the plate error. The data said otherwise. ↗
- The nightly check said ‘all clean’ for weeks. Thirteen stale tasks disagreed. ↗
- A 0.91 confidence score told me the plate was right. It wasn’t. ↗
- My AI agent said the bug was “structurally cured.” Grep found zero hits. ↗
- My AI assistant bricked itself — and the cause was two kilobytes of its own context ↗
- My vision model was confidently wrong about a plate ↗
- How pinning contracts in AI briefs cut my median wall-clock to 0.22× of estimate ↗
03
Projects
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