Skills for Real Engineers. Straight from my .agents directory.
second-brain-quiz
Agent skill fromundefined-ui/second-brain-os
Generate questions from the user's own concept pages so they can find out what they saved but never learned, and compare their answers against what the pages say. Use this skill when the user wants to test themselves, revise, make flashcards from their notes, or asks what they have forgotten. Do NOT use for generic quizzing on a topic the vault does not cover, or for answering a question from the vault.
How to install second-brain-quiz
npx skills add undefined-ui/second-brain-os# or add only this skill to Claude Code: copy the folder
skills/second-brain-quiz/
# into
~/.claude/skills/second-brain-quiz/ (all projects)
.claude/skills/second-brain-quiz/ (one project)
1# Quiz from your own pages23Reading something is not learning it. A vault of well-written pages nobody4revisits is a library, and libraries do not make anyone knowledgeable.56## Core rule78Questions come from the user's pages, at the depth those pages record. Never9from general knowledge about the topic.1011## Workflow12131. **Pick the scope:** a topic, a cluster, or pages updated recently.142. **Write questions of two kinds:** recall of what the page states, and15 application of the idea to a new case.163. **Withhold answers** until the user has attempted them.174. **Grade against the page, not against what is true.** If they answered18 correctly but the page says otherwise, that is a page problem worth19 surfacing.205. **Report the gaps:** which pages they could not answer from. Those are things21 saved and never learned.2223## Output format2425```26<n> questions from <n> pages27281. <question>29...3031[after answers]32Solid: <topics>33Shaky: <topics, with the pages to reread>34Page problems found: <pages that are unclear or wrong>35```3637## Calibration3839Keep it to a handful of pages that matter. Quizzing everything ever saved is a40job, not a habit.4142A page that cannot generate a good application question is usually a page that43records the source's wording rather than an understanding of it. Say so.
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