Look up what the record, the repo, or the world can answer. Only what the user alone holds routes to a skill.

Route each thing still left to invent by what it is, invoking the named skill with the Skill tool:

• The words admit two readings that would build different things → use clarify skill.
• The user holds what they want but can't yet say it → use elicit skill.
• The user is missing something already settled and can't ask past it → use explain skill.
• The ask arrives committed, its decisions undefended → use interrogate skill.

Route again until nothing is left to invent. Where the input leaves it open, ask the negative once — what should this NOT do.

State the work order: the ask, what it must NOT do where that surfaced, and what is still open. As short as it goes with nothing in the spec lost — plain words.

The WHAT is confirmed and what's open is the technical path → use shape skill.