Create or refine SDD requirements and specifications with explicit assumptions, non-goals, acceptance criteria, success metrics, and retrofit truth markers.
How this skill is triggered — by the user, by Claude, or both
Slash command
/spec-driven-development:sdd-specifyThe summary Claude sees in its skill listing — used to decide when to auto-load this skill
Use to turn an idea, feature, bug, or existing system into a behavior-first spec.
Use to turn an idea, feature, bug, or existing system into a behavior-first spec.
Prefer the repo shape: Spec Kit specs/<feature>/spec.md; Kiro .kiro/specs/<feature>/requirements.md or bugfix.md; OpenSpec openspec/specs/<capability>/spec.md plus openspec/changes/<change>/; fallback .sdd/<feature>/requirements.md.
Keep specs at what/why level:
Avoid stack, classes, schemas, framework choices, and file paths unless bugfix/retrofit/design-first and explicitly labeled.
Proceed with labeled low-risk assumptions. Clarify, constrain, or convert to non-goal when ambiguity changes scope, security/privacy, UX, data retention, integration contracts, compliance, or delivery risk. [TO VERIFY] needs owner, risk, next action. LLM-drafted requirements are drafts until checked against user input, code truth, or project context.
Ask at most three concrete questions only when needed.
Feature spec:
Bugfix spec:
Retrofit spec:
[TO VERIFY]No placeholders; buildable requirements are testable or deferred; success criteria measurable; non-goals constrain scope; assumptions/sources/review gaps visible; stable IDs support traceability; next step is clarify, plan, tasks, or direct implementation.
npx claudepluginhub xopoko/plug-n-skills --plugin spec-driven-developmentProvides behavioral guidelines to reduce common LLM coding mistakes, focusing on simplicity, surgical changes, assumption surfacing, and verifiable success criteria.
Searches, retrieves, and installs Agent Skills from prompts.chat registry using MCP tools like search_skills and get_skill. Activates for finding skills, browsing catalogs, or extending Claude.
Creates, edits, and optimizes skills for Claude Code, including drafting, evaluating with test prompts, iterating on performance, and improving skill descriptions for better triggering accuracy.