What problem does it solve? Turning a feature specification into a concrete implementation plan requires structured research, data modeling, and contract definition, which is error-prone when done ad hoc. This Skill automates the spec-kit planning workflow so design artifacts are produced consistently. ## Core Features & Use Cases - Plan Workflow Execution: Runs the setup script, loads the feature spec and project constitution, and fills the implementation plan template with technical context and constitution checks. - Design Artifact Generation: Produces research.md, data-model.md, contracts/, and quickstart.md through Phase 0 research and Phase 1 design. - Extension Hook Support: Evaluates before_plan and after_plan hooks from .specify/extensions.yml and executes mandatory hooks automatically. - Use Case: After writing a feature spec in a spec-kit project, invoke this Skill to resolve open questions, define the data model, and generate a validated implementation plan ready for task breakdown. ## Quick Start Ask the agent to run the speckit plan workflow for the current feature branch to generate the implementation plan and design artifacts.