Leaderboard/Knowledge/second-brain
Last commit on April 7, 2026·Created on April 6, 2026

NicholasSpisak/second-brain

Turns clipped sources into a wiki you can question and audit.
Combined rank
#425
across all skills
In Knowledge
#16
category rank
Stars
716
+1.0% in last 7d
Forks
108
+2.9% in last 7d
Watchers
13
0.0% in last 7d
Traction scoreGitHub stars can be faked, so popularity alone can be misleading. Traction Score looks for broader signs of recent attention, adoption, and active maintenance.
TL;DR

This skill collection runs on Obsidian vaults using the LLM Wiki pattern. It ingests raw source documents into structured, interlinked wiki pages with entities and concepts, then lets you search and synthesize across the vault. A lint pass checks for broken wikilinks, orphan pages, contradictions between sources, stale claims, and missing cross-references. It is built for Obsidian power users, researchers, and anyone maintaining a personal knowledge base who wants the wiki to stay coherent without manual upkeep.

WHO IT'S FOR
Obsidian power users
set up and maintain an LLM-powered wiki
AI-assisted note-takers
automate ingestion of clipped articles into a wiki
Personal knowledge base maintainers
health-check and fix wiki issues regularly
Researchers and students
query and synthesize knowledge from a personal wiki
Repository contents

4 skill files

Compatible AgentsThe repository documents support for these agents. The skills may also work with other agents that can load SKILL.md files, but they may need some setup or small changes.

Use this skill collection

Follow the documented setup, then try a first task.

I’m using

Install the complete Second Brain bundle with npx

Installs: Complete Second Brain bundle containing the setup, ingest, query, and lint skills. · Claude Code, Codex, Cursor, Gemini CLI

Before you start
  • Obsidian
  • Node.js
  • Claude Code, Codex, Cursor, Gemini CLI, or another AI coding agent that supports Agent Skills
  1. In a terminal, run the documented repository installation command.

    npx skills add NicholasSpisak/second-brain
skills/second-brain-lint/SKILL.md · Checked Sep 18, 2026skills/second-brain/SKILL.md · Checked Sep 18, 2026skills/second-brain-query/SKILL.md · Checked Sep 18, 2026README.md · Checked Sep 18, 2026skills/second-brain-ingest/SKILL.md · Checked Sep 18, 2026

Give it something to do.

Suggested first task

Initialize a Second Brain vault

Uses second-brain

  • Desired vault name, or acceptance of the default second-brain
  • Desired parent location, or acceptance of the default ~/Documents/
  • Knowledge-base topic or domain
  • Any additional AI agents needing configuration
  • Which optional CLI tools to install, if any
  • Obsidian installed
Use the second-brain skill to guide me through creating a new Obsidian knowledge-base vault. Ask one question at a time about the vault name, location, topic, agent configuration, and optional tools, using the documented defaults when I accept them. After collecting my answers, initialize the vault and summarize what was created.
skills/second-brain/SKILL.md · Checked Sep 18, 2026
Suggested first task

Review one source before ingestion

Uses second-brain-ingest

  • An initialized Second Brain vault
  • A source placed in the vault's raw/ directory
  • The actual source filename to substitute for <source-file>
Use the second-brain-ingest skill on `raw/<source-file>` in my initialized vault, replacing `<source-file>` with the actual source filename. Read that source completely, share its 3–5 most important takeaways, ask what I want emphasized or skipped, and wait for my confirmation before writing any wiki pages.
Suggested first task

Answer a factual question from the wiki

Uses second-brain-query

  • An initialized vault containing ingested wiki pages
  • The factual question to substitute for <question>
Use the second-brain-query skill to answer this factual question from my wiki: `<question>`. Replace `<question>` with my actual question. Start with `wiki/index.md`, read only the relevant linked pages, and give me a direct answer whose factual claims cite the supporting wiki pages with `[[wikilinks]]`. Do not save a synthesis page unless I later approve it.