What problem does it solve? Writing Functional Technical Design (FTD) documents often produces either bloated, unreadable specifications or under-scoped drafts that miss privacy, security, and non-functional requirements. This Skill enforces a right-sized ceiling model: a small mandatory core plus only justified additions, with a mandatory clarification gate before any drafting begins. ## Core Features & Use Cases - Scenario-driven drafting: Classifies work as feature, project, or enterprise, applying matching size budgets, section toggles, and sign-off gates; enterprise designs ship as indexed multi-file bundles. - Review & restructure workflows: Audits existing FTDs against the standard (report-only), restructures legacy design documents into FTD format, or structures loose feature descriptions. - Compliance built in: Privacy-by-design and security-by-design statements are always mandatory, with DPIA, STRIDE+LINDDUN threat modeling, and measurable ISO 25010 NFRs for enterprise scenarios. - Use Case: A team building a patient triage assistant for hospitals asks for an FTD. The Skill identifies an enterprise scenario, runs the intake gate, and produces a multi-file bundle with NEN 7510 compliance evidence, DPIA decision, and measurable NFRs. ## Quick Start Ask the AI to write an FTD for your feature or project and answer its intake questions about scope, output language, and acceptance criteria format.