Harness Engineering: The Model Is a Component, the Harness Is the Product
You don't ship a model. You ship everything around it.
Notes written while doing the work.
Technical posts, product decisions, and honest observations, written while building, not after.
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AI engineering
What AI features look like when regular people use them in real life.
Loop Engineering: Designing the Cycle an Agent Runs In
An agent is a while loop. Everything hard is in the exit condition.
Tool Design for LLM Agents: APIs for a Consumer That Can't Read the Docs
Your tool's description is its documentation, its type system, and its onboarding.
Why I Won't Sell "Unlimited AI"
Every AI call has a marginal cost. 'Unlimited' on a fixed price means one of three things: weaker models, hidden limits later, or burning cash.