What problem does it solve? Vague feature ideas often lead to premature coding, missed edge cases, and scope creep. This Skill transforms rough markdown specs into detailed, reviewed implementation plans before any code is written. ## Core Features & Use Cases - Structured Planning Pipeline: Runs a 17-step workflow covering research, stakeholder interview, spec synthesis, plan generation, and section splitting. - External Multi-LLM Review: Sends the plan to Gemini CLI and Codex CLI for independent architectural feedback, then integrates accepted suggestions. - Parallel-Ready Sections: Splits the plan into self-contained section files with dependencies and acceptance criteria, plus ready-to-run prompts for ralph-loop and Ralphy autonomous execution. - Use Case: You have a rough idea for an OAuth2 authentication system. Run the skill on your spec file, answer interview questions, and receive a reviewed plan split into implementation sections you can execute manually or autonomously. ## Quick Start Create a markdown spec file describing your feature in a planning directory, then invoke the skill with that file path, for example /gepetto @planning/auth-spec.md, and answer the interview questions.