second-brain: LLM-maintained personal knowledge base for Obsidian. Based on Andrej Karpathy's LLM Wiki pattern

by NicholasSpisak · Agent Tool · ★ 737

Last updated: · Indexed by AgentSkillsHub · Auto-synced every 8h

How to install second-brain

npx skills add NicholasSpisak/second-brain

Taken from the project's README on GitHub. Check the security audit before running it.

Security audit verdict: SAFE · quality 68/100

None of the 42 rules matched — no credential harvesting, no data exfiltration, no curl-pipe-shell installer. Scanned against 42 published rules built on the SlowMist agent-security taxonomy, refreshed every 8 hours. Full audit →

The quality score combines nine heuristic checks of the repo and its README: completeness, clarity, specificity, examples, structure, agent readiness, step-by-step content, instruction quality and security notes. It rates how well the project explains itself to an agent, not the code.

agent-skillsaiknowledge-basellmmarkdownobsidianpersonal-wikisecond-brain

Quick Facts

Stars737
Forks109
LanguageShell
CategoryAgent Tool
Quality Score68/100
Open Issues1
Last Updated2026-04-07
Created2026-04-06
Platformscli
Est. Tokens~12k

About second-brain

Second Brain An LLM-maintained personal knowledge base built on the LLM Wiki pattern. Drop raw sources into a folder, let the LLM compile them into a structured wiki, and browse it all in Obsidian. How It Works You feed raw material (articles, papers, notes, transcripts) into a folder. The LLM reads everything, writes structured wiki pages, creates cross-references, and maintains an index.

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How this security grade is produced

Grades come from a rule-based scan built on the SlowMist agent-security taxonomy: 42 published rules, covering credential harvesting, data exfiltration, curl | sh installers and more. It is a first-layer scan, not a manual audit — we say so rather than overstate it.

The scale of the problem is documented independently: Liu et al. (2026), in a study of 31,132 agent skills, report that 26.1% contain security vulnerabilities. Our own full-catalog census is published as a citable open dataset.

Sources & who's responsible:

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