Product Principles is a production-ready Claude Code skill (quality score 70/100) in the prd-spec sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/product-principles/ and loads when your prompt matches the skill's trigger.
When to invoke it: Use when evaluating user stories, setting confidence scores, referencing OST levels, scoping MVP, or determining validation sufficiency.
The Product Principles skill is built for product managers, product designers, and cross-functional teams planning, shipping, and measuring product features. It is part of the open ClaudSkills registry, a community-curated catalog of 15,000+ capabilities you can install for Claude Code — the Claude CLI agent.
mkdir -p ~/.claude/skills/product-principles curl -L https://claudskills.com/skills/product-principles/SKILL.md \ -o ~/.claude/skills/product-principles/SKILL.md
Or just download SKILL.md directly and drop it into ~/.claude/skills/product-principles/. Claude Code auto-discovers it on next session.
Skills live at ~/.claude/skills/product-principles/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\product-principles\SKILL.md on Windows. See the full install guide for step-by-step instructions.
The ClaudSkills desktop app installs any skill directly into ~/.claude/skills/ with one click — no terminal required. Pro starts at $9/mo or $149 lifetime.
Browse all Product skills in the ClaudSkills registry, or explore these top-rated picks from the same category: