Pre-build session with the rubber duck — runs BEFORE implementation, covering both a pre-coding design sketch and plan/spec review. Use when the user states implementation intent (\"build this for me\", \"build me X\") with no plan or code yet, when a plan/spec/RFC was just produced, or says \"duck design\", \"duck plan\", \"sketch first\", \"review this plan\". Not for code already written — use /duck-verify or /duck-review.
$npx -y skills add leejuoh/claude-code-zero --skill duck-prebuildInstalls into the current project.
Run `npx skills use "https://github.com/leejuoh/claude-code-zero" --skill "leejuoh/claude-code-zero/duck-prebuild"` 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/leejuoh/claude-code-zero" that are relevant to the current task. Run `npx skills add "https://github.com/leejuoh/claude-code-zero"` and select the relevant skills, then follow their instructions.