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Second Brain Quiz Agent Skill

by undefined-ui

>- 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.

443 tokens
context cost
the whole folder, loaded on every use
1
files
instructions only
0
copies elsewhere
how many repositories repackaged it
150
stars on the repo
on the repository, not the skill itself

Install

one command, takes just this skill from the repository 
npx skills add https://github.com/undefined-ui/second-brain-os --skill second-brain-quiz

The instruction itself

5 sections, as written by the author

Quiz from your own pages

Reading something is not learning it. A vault of well-written pages nobody

revisits is a library, and libraries do not make anyone knowledgeable.

Core rule

Questions come from the user's pages, at the depth those pages record. Never

from general knowledge about the topic.

Workflow

  • Pick the scope: a topic, a cluster, or pages updated recently.
  • Write questions of two kinds: recall of what the page states, and

application of the idea to a new case.

  • Withhold answers until the user has attempted them.
  • Grade against the page, not against what is true. If they answered

correctly but the page says otherwise, that is a page problem worth

surfacing.

  • Report the gaps: which pages they could not answer from. Those are things

saved and never learned.

Output format

<n> questions from <n> pages

1. <question>
...

[after answers]
Solid: <topics>
Shaky: <topics, with the pages to reread>
Page problems found: <pages that are unclear or wrong>

Calibration

Keep it to a handful of pages that matter. Quizzing everything ever saved is a

job, not a habit.

A page that cannot generate a good application question is usually a page that

records the source's wording rather than an understanding of it. Say so.

How to use it

Copy the folder

Take undefined-ui/second-brain-quiz from the repository into ~/.claude/skills for personal use, or into .claude/skills inside a project.

Check the name does not clash

The agent identifies a skill by the name field in its header. Two skills with the same name cannot sit side by side — one of them will be ignored.