Second Brain

by coreyhaines31

Second Brain is an Automation skill for Claude Code, published by coreyhaines31 in makerskills.

680 stars55 forkson coreyhaines31/makerskillsAdded 2026/08/24+2% in starsRepository updated 2026/08/18

View source on GitHub Download repo ZIP

agent-skillsai-agentsclaude-codeclaude-skillspersonal-knowledge-managementproductivity

Install in seconds

Install Second Brain

Copy Second Brain into your Claude Code skills folder. Run the command in your terminal, or review the source on GitHub before installing.

terminal

npx degit https://github.com/coreyhaines31/makerskills/tree/main/skills/second-brain ~/.claude/skills/second-brain

Requires Node.js. Downloads this skill only — not the rest of the repository — into your Claude Code skills folder.

Without Node.js

git clone https://github.com/coreyhaines31/makerskills.git

Clones the whole repository, then copy the skill’s own directory into your skills folder yourself.

In this catalog

Source file: skills/second-brain/SKILL.md in coreyhaines31/makerskills
Installs to: ~/.claude/skills/second-brain
Collection: One of 20 skills cataloged from this repository
Category: Automation — 1523 skills

What Second Brain does

Second Brain captures, compiles, queries, lints, and connects content in a markdown-based personal wiki. Use it for raw intake, building interlinked topic pages, and checking the health of your knowledge vault.

Second Brain is cataloged under Automation on DirSkills. Second Brain comes from a repository tagged agent-skills, ai-agents, claude-code, claude-skills and personal-knowledge-management.

Documentation

README

Excerpt

/second-brain — Karpathy LLM Wiki workflow

Wraps an existing Second Brain in Obsidian (or any markdown-based vault). The wiki vault's CLAUDE.md is the authoritative schema — the skill orchestrates the operations the user has been doing manually.

Mental model

Three layers, each with a clear role:

raw/      →  wiki/         →  outputs/
sources      compiled         generated
                              artifacts

This is the opening of the README. Read the full README on GitHub.

Commands Second Brain provides

Slash commands named in this skill’s SKILL.md, listed in the order they first appear.

/second-brain
/sb
/deep-research
/jab-hook

Frequently asked about Second Brain

What else does coreyhaines31 publish alongside Second Brain?
Second Brain is one of 20 skills that DirSkills catalogs from coreyhaines31/makerskills, the repository it ships in. Its siblings there include Business Brainstorm, Company Brain and Company CFO. Each one is a separate skill with its own page in this directory, installs the same way Second Brain does, and is maintained by coreyhaines31 in that same repository. The rest of the collection is listed on the coreyhaines31/makerskills page.
How does Second Brain compare to other Automation skills?
Second Brain ranks #1091 by stars among the 1523 Automation skills in this catalog. The most-starred ones next to it are Autonomous Loops, Autonomous Agent Harness and Automation Audit Ops. DirSkills ranks by the star count of the repository each skill ships in, so that order reflects how popular those repositories are rather than any review of Second Brain against them. Open each page to compare what they document and how they install.