Individual skill
second-brain
When you want to capture into, compile, query, lint, or connect your personal Second Brain. Wraps the Karpathy LLM Wiki schema (Obsidian or any markdown vault) — raw/ (unprocessed sources), wiki/ (AI-compiled interlinked topic pages), outputs/ (generated artifacts). Vault defaults to ${SECOND_BRAIN_VAULT:-$HOME/Documents/SecondBrain}/. Six modes — capture (drop something into raw/), compile (process unprocessed raw files into wiki pages, update INDEX.md), query (answer a question from the wiki, save to outputs/), lint (orphans / contradictions / stale / unprocessed raw / topic gaps), connect (suggest new wikilinks between pages), search (quick lookup). Triggers on "/second-brain," "/sb," "capture this," "save this to my brain," "compile the wiki," "process raw notes," "query my wiki," "ask my brain," "lint the wiki," "find connections," "search my notes." Complements deep-research (external corpus) — this is the internal corpus. Team knowledge goes to company-brain, not here.
skills/second-brain/SKILL.md
Source commit ea7dd78515839ff11fc24e79ba0c53db2d5fff6c
What was checked
- Matches the observed repository HEAD
- Yes
- Scanner rules are current
- No
- Repository scan complete
- No
- Skill scan complete
- No
- Observed behavior
- Not checked yet
- Last checked
- Nov 4, 2026
These are observations at the recorded commit, not a guarantee of safety. Review the source before running it.
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An install command is unavailable: current rules, complete repository and skill scans, an eligible behavior level and a permitted license are required.
Repository context
- Repository stars (not skill ratings)
- 893
- Repository last updated
- Nov 5, 2026
- License
- MIT
Observed agent integration: No specific integration evidence. Standard SKILL.md installation does not imply verified compatibility.
- agent-skills Repository topic
- ai-agents Repository topic
- claude-code Repository topic
- claude-skills Repository topic
- personal-knowledge-management Repository topic
- productivity Repository topic
- operations Derived category
- productivity Derived category
- research Derived category
- productivity-notes Derived category
Files and excerpt
File metadata and permitted, redacted excerpts come from the recorded scan. Source links are pinned to that commit.
Browse files
SKILL.mdcore · 11,962 bytesSKILL.mdcore · 11,962 bytesSKILL.mdcore · 11,962 bytesSKILL.mdcore · 11,962 bytesSKILL.mdcore · 11,962 bytesSKILL.mdcore · 11,962 bytesSKILL.mdcore · 11,962 bytesreferences/schema.mddoc · 7,448 bytesreferences/templates/raw.mddoc · 341 bytesreferences/templates/wiki.mddoc · 611 bytesreferences/vault-config.mddoc · 1,787 bytes
Read excerpt
# /second-brain — Karpathy LLM Wiki workflow
Wraps an existing Second Brain in Obsidian (or any markdown-based vault). The wiki vault's schema doc (`CLAUDE.md` or `AGENTS.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
```