SDD Derive

Generate SDD artifacts from user intent and existing code. Produces either a change directory (for new/modified behavior) or baseline specs (for retroactive documentation).

SPECS_ROOT is resolved by the sdd router before this skill runs. Replace .specs/ with your project's actual specs root in all paths below.

Invocation Notice

• Inform the user when this skill is being invoked by name: sdd-derive.

When to Use

• User describes a feature to specify: "derive SDD specs for the auth flow"
• User wants a change directory for a new feature against an existing codebase
• User wants retroactive specs documenting existing behavior
• User says "spec this out", "create an SDD change for X", "document this in SDD"