Writing
Notes from systems I built: what broke, what I decided, and why.
How I stop an LLM from inventing customer reviews
Testimonia uses AI to help customers write reviews. These are the rules, enforced in code rather than prompts, that keep it from writing reviews nobody gave.
Oct 2026, 6 min read
Running coding agents unattended: sandboxes, leases and budgets
What it took to let Claude Code and Codex build and submit projects without a human watching: isolation, crash-safe state and spending limits.
Sep 2026, 7 min read
Let the model forecast. Never let it size the bet.
Building a prediction-market research agent with Grok and GPT, where every money decision is plain, deterministic code.
Sep 2026, 5 min read