Use when you have a spec or requirements for a multi-step task, before touching code
Use when picking up a user-gate task OR when a hook demands re-validation. Runs the "do I know HOW?" self-check; if the HOW is clear, executes the verification and posts evidence; if not, hands off to specifying-gates. Kept deliberately separate from executing-plans so that without the opt-in hook, the main flow stays untouched.
Use when you have a written implementation plan to execute in a separate session with review checkpoints
Use when a user-gate task has requiresUserSpecification=true OR the agent's "do I know HOW?" self-check returns no. Locks down verification mechanics through a short AskUserQuestion sequence and writes the answers back into the task's metadata. Does NOT run the verification itself.
Use when executing implementation plans with independent tasks in the current session
Use when encountering any bug, test failure, or unexpected behavior, before proposing fixes
Use when starting any conversation - establishes how to find and use skills, requiring Skill tool invocation before ANY response including clarifying questions
You MUST use this before any creative work - creating features, building components, adding functionality, or modifying behavior. Explores user intent, requirements and design before implementation.