What problem does it solve? Understanding how an unfamiliar subsystem works requires hours of manual code reading, and architectural questions like "where should this live" or "how does the rate limiter work" often go unanswered. This Skill automates codebase exploration and produces senior-engineer-level architectural explanations. ## Core Features & Use Cases - Explain Mode: Decomposes complex questions into parallel explorer agents that trace code paths, then synthesizes findings into a structured explanation with overview, key concepts, flow, file map, and gotchas. - Critique Mode: After explaining, spawns multiple independent model critics that evaluate the architecture against a rubric covering abstraction fit, data model, boundaries, and evolution readiness. - Use Case: Before modifying the billing flow, ask how on-demand usage billing works and receive a walkthrough of the trigger, call chain, data flow, and the files you need to touch. ## Quick Start Ask the agent to explain how the authentication service works in this repository.