# eugeniughelbur/obsidian-second-brain

Persistent memory for Claude Code and 6 other CLI agents, stored as plain markdown in your Obsidian vault. Stop re-explaining your projects, decisions and people every session. 45 commands: hybrid semantic search, self-rewriting notes, key-less web research, and scheduled agents that maintain the vault while you sleep.

Repository: https://github.com/eugeniughelbur/obsidian-second-brain
Canonical: https://ross.abutalabs.com/products/obsidian-second-brain
Homepage: https://eugeniughelbur.github.io/obsidian-second-brain/
Language: Python
License: MIT
License Family: permissive
Topics: ai-agents, claude-code, obsidian, second-brain, anthropic, claude, claude-skill, knowledge-management, note-taking, obsidian-md, personal-knowledge-management, claude-code-skill, agent-skills, ai-note-taking, ai-second-brain, claude-memory, claude-plugin, karpathy-llm-wiki, knowledge-graph, pkm
Last push: 2026-08-26T23:06:25+00:00

## Health v2 (maintenance only)
Score: 79/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 99, release rhythm 93, longevity 11
- inputs: {"age_days": 162, "days_push": 7, "days_rel": 46, "gap_med": 6, "n_releases_24m": 10}
- flags: young
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 4206, forks 525 (observed 2026-08-28T04:08:38.972979+00:00)

## What it is
A cross-platform AI agent skill that gives CLI coding agents like Claude Code, Codex, and Gemini CLI persistent long-term memory stored as plain markdown in an Obsidian vault. It provides ~45 natural-language commands for capturing, searching, and self-maintaining knowledge notes, including hybrid semantic search, self-rewriting pages, web research, and scheduled background agents.

## Use cases
- give Claude Code persistent memory across sessions
- stop re-explaining projects and decisions to AI agents every session
- keep a self-maintaining second brain in Obsidian markdown
- search my vault semantically from the terminal
- have an agent maintain and reconcile my notes overnight
- capture ideas and log dev sessions to a knowledge vault
- share one knowledge base across multiple AI CLI agents

## When to choose
- you use Obsidian and CLI AI agents and want durable, portable memory in plain markdown
- you want your knowledge base to update and reconcile itself rather than just accumulate notes
- you switch between multiple agent CLIs and want a single shared brain

## When to avoid
- you don't use Obsidian or don't want your notes in a markdown vault
- you need a hosted or GUI-first memory solution rather than a CLI-agent skill
- you're uncomfortable with agents autonomously rewriting your notes

## Facets
- artifact type: plugin
- maturity: active
- function: agent-framework, rag, search-engine, nlp, markdown, workflow-automation, scheduling, chatbot
- domain: artificial-intelligence, large-language-models, developer-tools, self-hosted
- platform: cli, cross-platform, python, self-hosted
- tags: obsidian, claude-code, second-brain, pkm, persistent-memory, agent-skills, knowledge-management, markdown-vault, karpathy-llm-wiki, ai-agents, automation

## Member repositories
- eugeniughelbur/obsidian-second-brain (main) score 79

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:08:38.972979+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-29T18:22:30.803062+00:00, confidence not recorded.
  - readme: https://github.com/eugeniughelbur/obsidian-second-brain (fetched 2026-08-28T04:08:38.972979+00:00, sha 400fea8e606a)
  - homepage: https://eugeniughelbur.github.io/obsidian-second-brain/ (fetched 2026-08-29T09:12:43.837177+00:00, sha 165341a7a166)
- Data as of 2026-08-30T08:39:29.467469+00:00.