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second-brain
LLM-maintained personal knowledge base for Obsidian. Based on Andrej Karpathy's LLM Wiki pattern.
363stars
60forks
Shell
agent-skillsaiknowledge-basellmmarkdownobsidianpersonal-wikisecond-brain
Quality signals
StaleNo testsNo CIThin docsNo licensePopular
AI summary
Auto-generated overview of what this skill does and when to reach for it.
Turns raw notes, articles, and documents into a structured, searchable wiki inside Obsidian using an LLM.
Use this when
- You clip web articles but never organize them
- Your notes are scattered and hard to recall later
- You want an LLM to build a wiki from your raw sources
- You need fast cross-referencing and entity tracking in Obsidian
- Your brain dump folder is growing but never becomes useful
Don't use when
- You prefer manual note-taking over automation
- Your sources are mostly images or videos without text
- You don't use Obsidian or an AI coding agent
Capabilities
- Converts raw markdown files into structured wiki pages
- Creates cross-references between notes automatically
- Maintains an index of all pages and entities
- Answers questions about your notes using the wiki content
- Checks wiki health and fixes broken links
- Generates summaries and syntheses from multiple sources
InstallSKILLInstall as a Claude Code skill
Universal installANY TOOL
$ npx skillcity@latest NicholasSpisak/second-brainAuto-detects the skill or MCP server in this repo and installs it for Claude Code, Codex, Cursor, Cline, OpenCode, Gemini CLI, Anti-Gravity, OpenClaw and Hermes.
Requires Node.js 18+ (ships with npx).
Or install manually
# Install into ~/.claude/skills/ mkdir -p ~/.claude/skills/second-brain curl -fsSL https://raw.githubusercontent.com/NicholasSpisak/second-brain/main/SKILL.md -o ~/.claude/skills/second-brain/SKILL.md
Loading README…
Ask a simulated agent to run this skill. It loads the real SKILL.md and reasons over your task with NVIDIA.
second-brain — sandboxAI sandbox
Pick a quick prompt below or type your own — watch the agent execute this skill step by step.
guest@skillcity:~$Try a prompt