Sdd Marketplace

About

kainsk/sdd packages Spec-Driven Development as a Claude Code plugin marketplace entry. It enforces a cascading spec hierarchy: L0 Constitution, L1 domain model, L2 BDD scenarios in Gherkin-MD, with lower levels forbidden from contradicting upper levels. The plugin adds 10 slash commands (/sdd:setup, /sdd:dry-run, /sdd:bug, /sdd:second-opinion, /sdd:housekeeping, /sdd:history, /sdd:evolve, /sdd:foresight, /sdd:reflect, /sdd:scenario), six bash scripts on PATH (sdd-validate.sh, sdd-link-index.sh, sdd-scorecard.sh, sdd-foresight.sh, sdd-install-hooks.sh, sdd-test.sh), and seven templates for constitution, domain, scenario, patterns, and steering docs. /sdd:dry-run must run before coding; Verdict BLOCK halts implementation. A 51-test regression suite validates manifests, caps, and security gates. Install via /plugin marketplace add kainsk/sdd. Use for spec-anchored teams needing mechanical validation—not for one-line typo fixes exempted in the handbook.

• 10 slash commands including /sdd:setup, /sdd:dry-run, /sdd:bug, /sdd:evolve
• 6 bash scripts on PATH: sdd-validate, sdd-link-index, sdd-scorecard, sdd-foresight, sdd-test
• L0 Constitution → L1 domain → L2 Gherkin-MD BDD hierarchy with dry-run BLOCK gate
• 7 templates for constitution, domain, scenario, patterns, steering docs
• 51 regression tests covering validate, caps, security gates, plugin manifest