Use this skill to author or expand a Product Requirements Document for a medical-data SaaS change. Drives PRD from business intent to a structured artifact that includes stage breakdown, measurable acceptance criteria, named dependencies, and a compliance section referencing COMPLIANCE_TAG.md. Handles iterative expansion: start lean, fill gaps surfaced by prd-implementation-precheck, until blockers/warnings are zero. Chinese trigger examples: "写 PRD", "PRD 起草", "补全 PRD", "PRD 分阶段", "PRD 完善", "需求文档撰写". Do NOT use for technical design (that's design.md / OpenSpec), do NOT bypass Step 0 (compliance precheck must come first). Success = PRD passes prd-implementation-precheck with zero blockers and zero warnings; stage breakdown present; compliance section linked.
How to install prd?
charliehzm/medharness/prd
$npx -y skills add charliehzm/medharness --skill prdInstalls into the current project.
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Run `npx skills use "https://github.com/charliehzm/medharness" --skill "charliehzm/medharness/prd"` and follow the generated skill instructions now. Read its complete output, redirecting it to a temporary file first if necessary. Resolve relative paths from the supporting-files directory it provides.
Use the skills in "https://github.com/charliehzm/medharness" that are relevant to the current task. Run `npx skills add "https://github.com/charliehzm/medharness"` and select the relevant skills, then follow their instructions.
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