Obsidian Second Brain

Operate any Obsidian vault as a living, self-rewriting second brain (an evolution of Karpathy's LLM Wiki pattern: sources rewrite existing pages, contradictions reconcile automatically, scheduled agents maintain the vault while you sleep). Use this skill whenever the user asks Claude to read, write, update, search, or manage their Obsidian vault - including saving notes from conversation, creating daily entries, updating kanban boards, logging dev work, managing people notes, capturing decisions, tracking deals, or maintaining any vault structure. Also triggers when the user wants to bootstrap

5,069 stars 625 forksProductivity & Notes

Install

skills CLI (Claude Code, Cursor, Codex and more)

npx skills add eugeniughelbur/obsidian-second-brain --skill obsidian-second-brain

Manual install

git clone --depth 1 https://github.com/eugeniughelbur/obsidian-second-brain.git /tmp/obsidian-second-brain
mkdir -p ~/.claude/skills
cp -r /tmp/obsidian-second-brain/. ~/.claude/skills/obsidian-second-brain

Personal skills live in ~/.claude/skills. Use .claude/skills in a project folder to share a skill with your team.

From the SKILL.md

# Obsidian Second Brain

> Claude operates your Obsidian vault as a self-rewriting knowledge base. An evolution of [Karpathy's LLM Wiki pattern](https://gist.github.com/karpathy/442a6bf555914893e9891c11519de94f): sources rewrite existing pages instead of just appending, contradictions reconcile automatically, and scheduled agents maintain the vault while you sleep.
> Everything worth remembering gets saved. Every update propagates everywhere it belongs.

---

## Quick Start

### 0. Choose vault access method (in order of preference)

Try these methods in order. Use the first one available:

**Method 0 - SessionStart hook (if configured):**
If `hooks/load_vault_context.py` is wired as a SessionStart hook in `~/.claude/settings.json`, `_CLAUDE.md` is injected into context automatically at session start.
Skip step 1 only when the manual is actually in your context, not merely because the hook is configured. Claude Code caps hook context at 10,000 characters, so a larger manual cannot be injected; in that case the hook says so in as many words ("NOT loaded - read it") and you read the file yourself (#270). A vault whose `.claude/CLAUDE.md` holds `@../_CLAUDE.md` sidesteps the cap entirely - Claude Code imports that natively at any size.
To wire it: `bash scripts/setup.sh "/path/to/vault"`.

Read the full skill on GitHub

Details

Skill name: obsidian-second-brain
Repository: eugeniughelbur/obsidian-second-brain
License: MIT
Repo updated: 28 October 2026

FAQ

What does the Obsidian Second Brain skill do?

How do I install the Obsidian Second Brain skill?

skills CLI (Claude Code, Cursor, Codex and more): npx skills add eugeniughelbur/obsidian-second-brain --skill obsidian-second-brain. Skills go in ~/.claude/skills (personal) or .claude/skills (project), and Claude loads them automatically when a task matches the description.

Is Obsidian Second Brain popular?

It lives in eugeniughelbur/obsidian-second-brain, which has 5,069 GitHub stars and 625 forks.

Related skills

Pensieve

2.5k

kingkongshot/Pensieve

Project knowledge base and workflow router. knowledge/ caches explored file locations, module boundaries, and call chains for reuse; decisions/maxims are established architecture decisions and coding standards to follow, not relitigate; pipelines are reusable workflows; short-term/ stages new conclusions until promotion or deletion. Use self-improve after completing work to capture new insights. Provides seven tools: init, upgrade, migrate, doctor, self-improve, refine, and sync-instructions.

Productivity & Notes251

N8n Workflow Patterns

6.6k

czlonkowski/n8n-skills

Proven workflow architectural patterns from real n8n workflows. Use when building new workflows, designing workflow structure, choosing workflow patterns, planning workflow architecture, or asking about webhook processing, HTTP API integration, database operations, AI agent workflows, batch processing, or scheduled tasks. Always consult this skill when the user asks to create, build, or design an n8n workflow, automate a process, or connect services — even if they don't explicitly mention 'patterns'. Covers webhook, API, database, AI, batch processing, and scheduled automation architectures. A

Productivity & NotesIn 1 list1.1k

Xhs Note Creator

2.4k

comeonzhj/Auto-Redbook-Skills

小红书笔记素材创作技能。当用户需要创建小红书笔记素材时使用这个技能。技能包含：根据用户的需求和提供的资料，撰写小红书笔记内容（标题+正文），生成图片卡片（封面+正文卡片），以及发布小红书笔记。支持 8 种精美排版主题和 4 种智能分页模式。

Productivity & Notes274

N8n Validation Expert

6.6k

czlonkowski/n8n-skills

Interpret validation errors and guide fixing them. Use when encountering validation errors, validation warnings, false positives, operator structure issues, or need help understanding validation results. Also use when asking about validation profiles, error types, the validation loop process, or auto-fix capabilities. Consult this skill whenever a validate_node or validate_workflow call returns errors or warnings — it knows which warnings are false positives and which errors need real fixes.

Productivity & NotesIn 1 list1.1k

Swarmvault

732

swarmclawai/swarmvault

Use SwarmVault when the user needs a local-first knowledge vault that writes durable markdown, graph, search, dashboard, review, chat-session, context-pack, task-ledger, static AI export, retrieval, and MCP artifacts to disk from books, notes, transcripts, exports, datasets, slide decks, files, URLs, code, and recurring source workflows.

Productivity & NotesIn 3 lists87

N8n MCP Tools Expert

6.6k

czlonkowski/n8n-skills

Expert guide for using n8n-mcp MCP tools effectively. Use when searching for nodes, validating configurations, accessing templates, managing workflows, organizing workflows into folders, managing credentials, auditing instance security, or using any n8n-mcp tool. Provides tool selection guidance, parameter formats, and common patterns. IMPORTANT — Always consult this skill before calling any n8n-mcp tool — it prevents common mistakes like wrong nodeType formats, incorrect parameter structures, and inefficient tool usage. If the user mentions n8n, workflows, nodes, or automation and you have n8

Productivity & NotesIn 1 list1.1k

Browse the most popular Claude skills, all productivity & notes skills, or write your own with the skills generator.