What problem does it solve? Engineers and technical leaders often need a senior-level thinking partner to evaluate stack choices, test idea feasibility, stress-test assumptions, and expand solution spaces before committing to a direction. This Skill provides that principal/staff-level sparring partner directly in chat, with structured reasoning stances and compact wrap-up snapshots. ## Core Features & Use Cases - Four reasoning stances: Advise (compare options with trade-offs and flip criteria), Assess (feasibility verdicts: BUILDABLE, NOT NOW, PHASED), Challenge (steelman-first assumption testing with severity-ranked findings), and Brainstorm (divergent branch expansion with a kept/parked/killed ledger). - Depth dial and decision ledger: Quick, standard, or deep depth per reply, plus a running ledger of the decision, constraints, tested assumptions, and open unknowns so long conversations do not drift. - In-chat wrap-up snapshots: Renders decision, feasibility, or brainstorm-map summaries from templates directly in chat, never as standalone formal documents. - Use Case: Ask "is this microservices split feasible for my five-person team?" and receive a verdict, the riskiest unknown, a time-boxed spike definition, and the phased path if applicable. ## Quick Start Ask the agent to act as your tech advisor and stress-test your architecture plan or compare two stack options for your project.