Spec-Driven Development for Claude Code: 19 atomic, stack-agnostic skills + 9 subagents that carry a feature from idea → spec → design → data-model → API → tasks → tests → implement → review → ship, plus a TDD implementation engine and a living roadmap above the per-feature…
$claude plugin marketplace add genkovich/sddInstalls into the current project.
Install sdd by running `claude plugin marketplace add genkovich/sdd`, then use it for the current task and follow its documentation at https://github.com/genkovich/sdd.