What you get

Every claim arrives labelled fact, inference or assumption, so you know what to lean on.

70 Product-Management Skills in Three Layers

Added 2026-08-06

The workflow layer runs day-to-week processes, the interactive layer asks three to five context questions before offering numbered options, and the component layer holds 30-to-90-minute templates.

Product & Project
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70 Product-Management Skills in Three Layers preview

The newer autonomous-investigation mode carries a hard requirement: every claim is tagged fact, inference or assumption, and comes with a do-not-invent list. The author also explains one engineering choice — he refuses Claude Code's $ARGUMENTS template syntax, because it only expands inside Claude Code and renders literally in Desktop or Codex. Each skill writes a plain-language input section instead, and the validator fails any skill that lacks one or leaves a bare $ARGUMENTS in the body. Licence is CC BY-NC-SA: no resale.

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