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Notes from the layer underneath.

Architecture decisions, post-mortems, and field notes from the multi-tenant agent infrastructure I build.

  • Jun 28, 2026 · Architecture

    The Through-Line: Ontology as Operational Substrate

    An ontology is not documentation - it is the runtime substrate an AI control system can stand on.

  • Jun 28, 2026 · Architecture

    The Semantic Stack: RDF, OWL, and SHACL as Engineering Materials

    RDF, OWL, and SHACL are engineering materials with real performance trade-offs, not academic formalisms.

  • Jun 28, 2026 · Architecture

    Decentralized Org Control: First, a Decentralized Ontology

    Decentralized control is downstream. Before an organization can be run by an evolving ontology instead of a CEO, you need a system that creates and maintains that ontology without a central owner - and that is the hard part.

  • May 29, 2026 · Architecture

    Beyond 90% Accuracy: Building AI Agents That Survive Production

    A 90%-accurate agent feels finished and isn't. Over twenty steps it's a coin flip you lose. The fix isn't a smarter model — it's a cautious architecture: measurable doubt, reversible actions, grounding, and memory that learns from every correction.

  • May 21, 2026 · Story

    Building OmoiOS

    How I built a self-hostable agent platform before background agents had a name, and what I learned shipping it without finding product-market fit.

  • May 21, 2026 · Reflection

    Marketing is harder than building

    Notes from a builder finding out that the easy part was the code.

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kevin hill · asunción · 2026 · built fast, iterating