ai-second-brain: Build a living, searchable AI second brain from your ChatGPT, Claude, and research history - Karpathy-style

Last updated: 2026-10-24 · Indexed by AgentSkillsHub · Auto-synced every 8h

How to install ai-second-brain

git clone https://github.com/charlie947/ai-second-brain.git ~/.claude/skills/ai-second-brain

Taken from the project's README on GitHub.

Security audit verdict: SAFE · quality 69/100

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.

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.

aiclaude-codekarpathy-wikiknowledge-management obsidian pkm second-brain

Quick Facts

Stars	205
Forks	41
Category	Claude Skill
License	MIT
Quality Score	69/100
Last Updated	2026-10-24
Created	2026-04-17
Platforms	claude-code
Est. Tokens	~17k

About ai-second-brain

AI Second Brain A Claude Code skill that walks you through building a living, searchable, AI-powered knowledge base from your own ChatGPT and Claude history, your raw research, and your daily inputs. On 3rd April 2026, Andrej Karpathy published a 1,500-word gist describing how to build a personal wiki using a folder of markdown and an LLM.

Compatible Skills

These tools work well together with ai-second-brain for enhanced workflows:

student-llm-wiki — semantic(0.37)+complementary+shared_fw(anthropic,openai)+similar_pop+shared_platform (69%)
obsidian-claude-pkm — semantic(0.44)+complementary+shared_fw(anthropic)+similar_pop+shared_platform (63%)
evil-read-arxiv — semantic(0.21)+complementary+shared_fw(anthropic,openai)+similar_pop+shared_platform (63%)
chubbyskills — semantic(0.21)+complementary+shared_fw(anthropic,openai)+similar_pop+shared_platform (63%)

ai-second-brain alternative? Top 6 similar tools

Looking for a ai-second-brain alternative? If you're comparing ai-second-brain with other claude skill tools, these 6 projects are the closest alternatives on Agent Skills Hub — ranked by topic overlap, star count, and community traction.

agent-second-brain by smixs · ⭐ 367
An always-on second brain you talk to. Voice notes in Telegram → typed, linked knowledge in your Obsidian vaul
skill-conductor by smixs · ⭐ 205
Architecture-first skill lifecycle for AI agents. BinEval binary scoring with threshold-blind, cross-family-ca
enzyme by jshph · ⭐ 51
A compile step for knowledge bases. Gives your agent a concept graph of your content — under 20s to index, 8ms
swarmvault by swarmclawai · ⭐ 724
The local-first LLM Wiki: open-source knowledge graph builder, RAG knowledge base, and agent memory store. Bui
claude-code-obsidian-starter by ArtemXTech · ⭐ 225
Free starter kit: Claude Code + Obsidian. Pre-configured vault with skills for projects, tasks, clients, and d
Noteriv by thejacedev · ⭐ 108
A fast, open-source markdown editor. Graph view, plugin API, themes, Git/WebDAV sync, AI MCP — built on Tauri

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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:

View on GitHub → Browse Claude Skill tools