Writing

Papers on systems we built and run in production: what we built, what it depended on, and the conditions under which we wouldn't build it that way again.

  1. A Second Mode, Kept Behind on Purpose

    Our long-form writing system has a second output mode that we have left behind on purpose while the architecture settles. What a lagging mode bought us, what it costs, and the rule that stops anyone spending on it too early.

  2. Which Paragraph Said That

    A world model derived from prose instead of typed into a form, where every fact can name the sentence and the paragraph that established it. What per-fact provenance costs, what it makes possible, and when a form is the right answer instead.

  3. Sixty-Four Calls and Seventeen Cents

    In August 2026 a complete generation run made 64 model calls and cost seventeen cents; sending the finished book into one call cost eighteen. What we learned about agentic cost by paying the bills rather than the pricing page.

  4. The MCP Server as a Projection of the Tool Registry

    A customer wants to drive your product from outside it. Declaring your tools again in the new protocol's vocabulary ships in a week and leaves you with two definitions of what your system can do, drifting apart. What it takes to make the external surface a rendering of the internal one instead.