A learning quiz helper based on the current coding session and, when available, a record of topics from earlier sessions. It asks recall questions and tracks which concepts need more practice.

Use it to test understanding of decisions, code patterns, dependencies, fixes, or topics that the learning record marks as uncertain.

It turns passive reading of session history into active practice and avoids repeatedly reviewing concepts that are already understood.

quiz — Skill for Claude Code by gkaria

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent

npx skills add gkaria/vibe-learn --skill quiz

Clone the repo

git clone --depth 1 https://github.com/gkaria/vibe-learn

Made for: Claude Code.

Or install vibe-learn, the plugin that ships this one along with the rest of its 5 skills, 4 commands.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

README.md

[![agentmods](https://agentmods.dev/badge/skills/gkaria/vibe-learn/quiz/github.svg)](https://agentmods.dev/skills/gkaria/vibe-learn/quiz)

Your own site

<a href="https://agentmods.dev/skills/gkaria/vibe-learn/quiz"><img src="https://agentmods.dev/badge/skills/gkaria/vibe-learn/quiz/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

Your own site · 80×15

<a href="https://agentmods.dev/skills/gkaria/vibe-learn/quiz"><img src="https://agentmods.dev/badge/skills/gkaria/vibe-learn/quiz.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 30 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 508 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.

Origin original No closer match found in the catalogue.

Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

Model	Per session	Once invoked
Fable 5.1	$0.00030	$0.00508
Opus 5	$0.00015	$0.00254
Sonnet 5	$0.00006	$0.00102
Haiku 4.5	$0.00003	$0.00051

Measured yesterday against content hash eb8e4a276521, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

quiz scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured yesterday.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

adapters/cursor/skills/quiz/SKILL.md · 28 lines

What it actually says

/quiz

Read .vibe-learn/session-log.jsonl to understand what happened in this session. Read .vibe-learn/knowledge.json if it exists (the cross-session knowledge ledger).

Knowledge helper: to read or update the ledger, use the knowledge.sh helper via your shell tool — never hand-edit the JSON. Locate it in this order: ~/.vibe-learn/scripts/knowledge.sh; the scripts/knowledge.sh under the VIBE_LEARN_DIR baked into .cursor/hooks/vibe-learn.sh or ~/.cursor/hooks/vibe-learn.sh; scripts/knowledge.sh when working in the vibe-learn repo itself. If the helper is missing, skip ledger updates and say so briefly.

Treat the rest of the user's message after /quiz as the argument:

If empty, quiz on this session: select 3–5 quizzable moments from the session log — decisions, patterns, dependencies added, failures that were fixed.
If it is review, run knowledge.sh due and quiz on concepts that are shaky or haven't been quizzed recently. If nothing is due, say so and offer a session quiz instead.
Otherwise, treat it as a topic and quiz on it, drawing from the session log, the ledger, and relevant source files.

Question flow:

Prefer "why" and "what would break" questions over trivia.
Ask one question at a time; wait for the user's answer before revealing anything.
After each answer, say what the user got right, what they missed, and give a 1–2 sentence correct explanation. Colleague tone, never an exam.
After the last question, record one knowledge.sh record <name> --label="..." --status=<solid|shaky> call per concept quizzed, with --notes on what was shaky. Use stable kebab-case names so the same concept is recognised across sessions.
Close with a short recap and, if anything was shaky, point to /learn <topic> or /explain <file>.

If the session log is empty and no ledger exists, say vibe-learn has nothing to quiz on yet and stop.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

yesterday First seen · 28 lines · 30 tokens per session scan A eb8e4a276521

Subscribe to this mod's changes

quiz is a skill published in the GitHub repository gkaria/vibe-learn (54 stars, last pushed yesterday), licensed MIT. It adds 30 tokens to every session and 508 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-07.

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