Spec-Driven Development

Help users compose structured specifications that AI coding agents can reliably execute. The core principle: the quality of AI-generated code is directly proportional to the quality of the specification.

How to Use

This skill accepts a phase argument via $ARGUMENTS:

• /sdd init — bootstrap SDD structure in the project
• /sdd specify <description> — create a specification (Phase 1)
• /sdd plan [feature-dir] — create a technical plan (Phase 2)
• /sdd tasks [feature-dir] — break into implementation tasks (Phase 3)
• /sdd review [feature-dir] — validate spec quality
• /sdd (no args) — ask the user what they need

Parse the first word of $ARGUMENTS to determine the phase. Everything after the phase keyword is the feature description or path.