What problem does it solve? Plans and design decisions often hide unexamined assumptions that surface late as rework. This Skill stress-tests an idea by systematically questioning every open decision until nothing is left silently assumed. ## Core Features & Use Cases - Design tree mapping: Models the topic as a tree of decisions where each answer unlocks the dependent questions behind it. - Frontier-based rounds: Asks all currently answerable questions in one numbered round, each with a recommended answer, then recomputes the frontier after the user replies. - Fact lookup delegation: Dispatches sub-agents or direct lookups for environmental facts (code, tests, docs, web) so the user is only asked for decisions, never research. - Use Case: Before implementing a new authentication system, run a grilling session to settle questions about session storage, token expiry, and provider choice, ending with a summary of decisions made, open questions, and risks. ## Quick Start Ask the agent to grill you on your plan for the upcoming feature until every design decision is resolved.