Claude Plugin: Spec-Driven Development

Product Requirements

Optional, client-facing PRDs that precede the ADR. Produced grill-first, with EARS-shaped success criteria an agent can actually check and a blast radius confirmed against the code.

Architecture Decisions

Record decisions using the MADR format with structured sections for context, options, consequences, and Mermaid diagrams. Every choice gets the rationale it deserves.

OpenSpec Specifications

Formal requirements with RFC 2119 keywords and WHEN/THEN scenarios. Paired spec + design documents separate the "what" from the "how" so each can evolve independently.

Sprint Planning

Break specifications into actionable sprint issues. Supports Beads, GitHub, GitLab, Gitea, Jira, and Linear so your architecture flows straight into your tracker.

Artifact Graph

Every artifact is a node and every frontmatter edge a link, so you can ask what a change breaks, what a spec descends from, and what nothing implements — before you touch the code.

Drift Detection

Quick-check files against specs or run a full audit across the project. Catch when code drifts from decisions before it becomes technical debt.

Skills

Claude Code slash commands for managing your architecture artifacts.

/sdd:prdCapture client-facing product intent before the ADR /sdd:adrCreate a new Architecture Decision Record /sdd:specCreate a new specification /sdd:planBreak specs into sprint issues /sdd:organizeGroup issues into tracker projects /sdd:enrichAdd branch/PR conventions to issues /sdd:triageVerdict and size issues; close only on evidence /sdd:workImplement issues in parallel worktrees /sdd:reviewReview and merge PRs with spec-aware pairs /sdd:respondAddress review feedback on a PR and reply /sdd:checkQuick-check code for drift /sdd:auditComprehensive alignment audit /sdd:discoverDiscover implicit architecture /sdd:searchSearch ADRs and specs with hybrid retrieval /sdd:docsGenerate this documentation site /sdd:graphBuild and query the artifact graph /sdd:indexIndex artifacts and code into qmd collections /sdd:initSet up CLAUDE.md for the plugin /sdd:primeLoad architecture context into session /sdd:listList all PRDs, ADRs, and specs with status /sdd:statusUpdate the status of a PRD, ADR, or spec /sdd:report-frictionFile feedback when a skill causes churn