1. Phase 1. The methodology

    What the Use Case Pattern is, how to apply it step by step, and how spec-as-code works.

  2. Phase 2. Maturity levels

    Four levels: as-is, layered, UseCase + Handler, DDD + Hexagonal — and how to choose.

  3. Phase 3. The methodology and AI

    Why a methodology when AI writes the code; the AI-native team; the executable standard — rules the agent applies on every PR.

  4. Phase 4. Tooling

    Setting up Claude Code for the Use Case Pattern: skills, plugins, MCP.