AI engineering7 min
A signed Mac app in four days, built with AI coding agents
Kempt went from first commit to a notarized, auto-updating Mac app with Stripe licensing in four days. What the agents did, what I owned, and what nearly broke.
Notes / AI engineering
AI agents and LLMs in production
Notes from shipping AI features people rely on, and from building a whole product with AI coding agents. The common thread is trust: a model is never the source of a fact, every change runs against labelled real inputs, and a failure says it's a failure.
Covered here
- AI coding agents
- Grounded answers
- Evaluation sets
- On-device models
- Structured extraction
- Failure modes
2 notes
AI engineering6 min
Making a small on-device model safe for money questions
Apple's on-device model is small and private. Getting it to answer "what's my IBAN?" without inventing one took rules, labels and honest failures.