How I Use AI in the Apps I Build

Three apps, one engineer, and the rule that shows up in all of them.

1. 1Three apps, one rule2 exercises, about 2 minStart here
2. 2Why I deleted my AI journal4 exercises, about 2 min

Habit 2: the cheap, certain check goes first, so no feature breaks because a model did.

1. 3A grader that works with every provider down5 exercises, about 3 min
2. 4One chokepoint, a fallback chain5 exercises, about 3 min

Habit 3: the model proposes, deterministic code decides.

1. 5The model proposes, the reducer decides4 exercises, about 2 min
2. 6Fences, leak filters and safe fetches5 exercises, about 3 min

Habit 4: make the cheapest path that works the default, and make the cost visible.

1. 7Pay only for the hard pages5 exercises, about 3 min
2. 8Bring your own key6 exercises, about 3 min

Habit 5: AI proposes, the user edits, in sentences the user can read.

1. 9Corrections become rules5 exercises, about 3 min
2. 10Directing coding agents5 exercises, about 3 min

What is still rough, what the numbers do and do not show, and a capstone.

1. 11Rough edges and what the numbers show3 exercises, about 2 min
2. 12Capstone: add AI to a ticket queue5 exercises, about 3 min