What problem does it solve? Implementation plans often contain hidden architecture violations, contract mismatches, and assumptions about SDK hooks or types that do not exist, which surface only after code is written. This Skill validates a plan against architecture documentation and the actual repository state before any implementation starts, catching design issues early. ## Core Features & Use Cases - Architecture Compliance Review: Maps each plan item to mandatory rules extracted from docs like BACKEND.md, FRONTEND.md, and CLAUDE.md, flagging violations with severity levels. - Repository Reality Checks: Verifies that planned SDK hooks, types, route structures, and exports actually exist in the current codebase rather than trusting plan assumptions. - Cross-Layer Compatibility Checks: Runs explicit checks between backend contracts and frontend forms, query signatures, search schemas, and verification gates. - Use Case: Before starting a new feature in a monorepo, run this Skill on the implementation plan to receive severity-ordered findings, open questions, and concrete corrections, then iterate until no critical gaps remain. ## Quick Start Ask the AI to review your implementation plan for architectural compliance before you begin coding.