SDD Specification Authoring

Writing formal, machine-readable specifications that drive AI-assisted implementation. This skill owns the Specify phase of the SDD pipeline and its output is the prerequisite for all downstream SDD work.

SDD Pipeline Position

INCEPTION → [SPECIFY] → PLAN → TASKS → IMPLEMENT → VERIFY
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The specification is the single source of truth. Every downstream artifact — task plan, architecture, implementation, tests — derives from and traces back to this document. Ambiguity in the spec propagates as defects in every subsequent phase.

Artifact-Pyramid Output: SPEC.md

The specification documents produced by this skill follow the artifact-pyramid structure: