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Notes

Short pieces about the methodology and architecture decisions behind the AI systems I ship — specs, evals, multi-agent orchestration, LLM integration, and the discipline of directing coding agents.

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Allagentsai-nativeevalmethodologyspecs
  • May 17, 2026

    The spec is the artifact, not the prompt

    When agent behavior lands via spec PRs instead of prompt edits, the team reasons about agents the way it reasons about code. Here's what that looks like in practice and why it works.

    • agents
    • methodology
    • specs
  • May 15, 2026

    Directing coding agents, not writing code

    A short note on what changes when the implementation layer is an agent — what stays the same, what disappears, and where the new bottleneck lives.

    • agents
    • methodology
    • ai-native
  • May 10, 2026

    Evals or it didn't ship

    Why I refuse to ship an agent without a held-out evaluation set, what makes one useful, and the failure mode I keep seeing when teams skip this.

    • agents
    • eval
    • methodology

© 2026 Fedor Chishchin. All rights reserved.

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