Default output: return only the result, blockers, and required evidence. Omit preambles, process narration, repeated context, confidence scores, and follow-up offers. Use at most five bullets unless a required artifact or schema needs more.

Spec-Driven Development

Overview

Write a comprehensive specification before writing any implementation code. The spec covers objectives, interface contracts, project structure, code style, testing strategy, and behavioral boundaries. This is the canonical Define-phase skill.

When to Use

• Starting a new project or module
• Building a feature that spans more than one file
• Making a significant change to existing behavior
• When stakeholders need to review and approve scope before work begins

Spec Structure

1. Objective