What problem does it solve? Large or vague implementation requests cause agents to produce disorganized code and unfinished work. This Skill turns a specification or clear requirement into a written plan of small, verifiable tasks with acceptance criteria, dependency ordering, and checkpoints, so implementation stays on track. ## Core Features & Use Cases - Structured Planning Workflow: Read-only planning mode that maps dependencies, identifies risks, and produces a plan document saved to tasks/plan.md plus a task list in tasks/todo.md. - Vertical Slice Task Design: Splits work into end-to-end feature slices (schema + API + UI) rather than horizontal layers, with task sizing guidance from XS to XL and rules for when to split further. - Checkpoints and Parallelization: Defines verification checkpoints every 2-3 tasks, orders high-risk work first, and identifies which tasks can run in parallel across agents or sessions. - Use Case: Given a spec for a user authentication feature, produce a phased plan where Task 1 delivers account creation end-to-end, Task 2 delivers login, each with testable acceptance criteria and explicit dependencies. ## Quick Start Ask the agent to read the feature specification and create an implementation plan with ordered tasks, acceptance criteria, and checkpoints saved to tasks/plan.md and tasks/todo.md.
