Hi, I'm Doug.

I build AI into software that handles money, so it stays accurate, explainable, and safe to rely on.

Outside the day job, I:

• Write about setting up AI coding tools properly, and about designing AI into business software.
• Run experiments with small models on my own hardware.
• Am learning Python properly, after a long career in C#.

Latestall writing

1. Nov 4, 2026The outbox, not the broker
2. Nov 3, 2026CLI, MCP, or the browserSetting Up Claude
3. Oct 29, 2026When agents go wrong: orchestrate first
4. Oct 28, 2026Skills versus hooksSetting Up Claude
5. Oct 27, 2026Rules that load by pathSetting Up Claude
6. Oct 23, 2026What Claude is allowed to doSetting Up Claude
7. Oct 21, 2026What you miss when you skip the setupSetting Up Claude

Start here

1. Oct 21, 2026What you miss when you skip the setup
2. Oct 28, 2026Skills versus hooks
3. Oct 29, 2026When agents go wrong: orchestrate first

Projectsall

1. Oct 29, 2026Fraxion's AP AI releaseRisk grading with reasons and a recommended action, AI invoice extraction that learns from user corrections, invoice-to-PO line matching, and a redesigned AP work center. I architected and built it. The company's announcement is on LinkedIn.

Experiments

1. Oct 30, 2026Decision models on a local GPUSmall open-weight models that answer with a label and a probability instead of text. About 30 ms an answer, the same answer every time. Next: is the confidence honest?
2. Oct 29, 2026Learning Python, from C#Short exercise files with built-in checks, each idea mapped to the C# I already know.