The spec-kit half of SpecKit Companion: it records your lifecycle so the sidebar lights up, fast-forwards small changes, and lets you reshape the pipeline.
SDD loads four layers of context automatically: principles, living specs, feature deltas, and ADRs, so your specs stop dying the moment a PR merges.
How I made SDD adoptable on a real, existing codebase: specs that live next to your code, and /sdd:init that drafts them from the code you already have.
What SDD is, why I built it, and how it differs from spec-kit. The origin story behind folding it back into spec-kit as the SpecKit Companion.
Learn how spec-driven development transforms AI-assisted coding from endless iterations to precise implementations. Stop hoping the AI understands your intent and start making it explicit with specifications that become living documentation.