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I still don't get why anyone builds a second brain for Claude Code from scratch when these 7 repos have over 75,000 stars combined 1. Teach Claude Obsidian's formats and tools with 6 skills from its CEO: 2. Run wiki-ingest on text in inbox/, review the plan, get linked... notes: 3. Save decisions and tasks with obsidian-save, load your current state next session with obsidian-world: 4. Run an unofficial Karpathy-style wiki with ingest, query and lint: 5. Copy a starter vault plus 18 skills and 72 commands: 6. Turn your ChatGPT and Claude exports into linked notes, run only step 1 of its README: 7. Split auto-loaded memory from wiki pages read on demand, ignore its tip to keep secrets in memory: Pick one, they overlap: all seven work with plain Markdown you can open in any editor Full guide in the article belowshow more

plusxbt

13,195 subscribers

50,454 views • 10 days ago •via X (Twitter)

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5 Comments

Shakib Hossain10 days ago

Seventy five thousand combined stars is a pretty good signal that these repos work.

MASA10 days ago

Which setup keeps context usage lowest on bigger vaults?

Galath10 days ago

Kewl

Zero10 days ago

why are gems like this being posted for free?

Alex | AI Shortcut10 days ago

i'd start with the one that turns exports into linked notes and see what sticks

Related Videos

I still don’t understand why people keep building a Claude second brain from scratch when these 10 repos already built the whole system They take in your sources, link them into a wiki, check every claim, and one of them runs fully on your own machine 01 obsidian-skills → Obsidian’s own CEO teaches Claude how Obsidian really works 02 claude-obsidian → drop in any source and Claude reads it, links it and files it into one connected graph of plain Markdown you own 03 obsidian-second-brain → Claude Code remembers you between sessions, with 48 commands, all inside your Obsidian vault 04 karpathy-llm-wiki → one install line, then ingest, query with citations and lint, in Claude Code, Cursor, Codex or OpenCode 05 second-brain → raw sources in, linked wiki pages out, browsed in Obsidian 06 second-brain-os → the full kit: a 77-page guide, a starter vault, 18 skills, 72 commands and 6 subagents, four of them read-only 07 llm-wiki → two-layer memory: 10 to 20 rules Claude loads every session, 50 to 200 wiki pages pulled only when needed 08 vouch → agents propose changes, you approve them, and a claim without a source is an error 09 ai-second-brain → your ChatGPT and Claude history becomes a linked Obsidian vault, then a wiki 10 LLM_Wiki_SecondBrain → the whole pipeline on a local model, no cloud API. 32 GB of RAM recommended

I still don’t understand why people keep building a Claude second brain from scratch when these 10 repos already built the whole system They take in your sources, link them into a wiki, check every claim, and one of them runs fully on your own machine 01 obsidian-skills → Obsidian’s own CEO teaches Claude how Obsidian really works 02 claude-obsidian → drop in any source and Claude reads it, links it and files it into one connected graph of plain Markdown you own 03 obsidian-second-brain → Claude Code remembers you between sessions, with 48 commands, all inside your Obsidian vault 04 karpathy-llm-wiki → one install line, then ingest, query with citations and lint, in Claude Code, Cursor, Codex or OpenCode 05 second-brain → raw sources in, linked wiki pages out, browsed in Obsidian 06 second-brain-os → the full kit: a 77-page guide, a starter vault, 18 skills, 72 commands and 6 subagents, four of them read-only 07 llm-wiki → two-layer memory: 10 to 20 rules Claude loads every session, 50 to 200 wiki pages pulled only when needed 08 vouch → agents propose changes, you approve them, and a claim without a source is an error 09 ai-second-brain → your ChatGPT and Claude history becomes a linked Obsidian vault, then a wiki 10 LLM_Wiki_SecondBrain → the whole pipeline on a local model, no cloud API. 32 GB of RAM recommended

Ryven

79,071 views • 14 days ago

I still don’t understand why people keep building a Claude second brain by hand when these 10 repos already built the whole system They turn your Claude sessions into a wiki, let Claude read and write your vault from your phone, and one of them comes straight from Obsidian’s own CEO 01 llm-wiki → your Claude Code and Codex sessions become a searchable wiki, with an MCP server to query it 02 llm-wiki-claude-skill → one skill file teaches Claude to ingest sources, answer from them, lint the wiki and compile it into clean pages 03 obsidian-skills → Obsidian’s own CEO teaches Claude how Obsidian really works 04 llm-wiki → a Claude Code plugin with init, ingest, compile, query and lint, where every change is committed to git 05 obsidian-dev-second-brain → your tickets, sprints and project docs live in the vault as notes, and Claude keeps them in sync with the code 06 obsidian-mcp-server → 14 tools to read, write, search and surgically edit notes, tags and frontmatter 07 mcpvault → safe vault access with a read-only mode, and Obsidian doesn’t even need to be running 08 obsidian-claude-code-mcp → connect Claude Code to your open vault with one /ide command 09 obsidian-web-mcp → reach your vault from your phone or any MCP client, with OAuth and a Cloudflare Tunnel 10 obsidian-mcp → a git-backed vault with 18 tools, running locally or on AWS Lambda Nobody is going to build your second brain for you, and every chat you close without one is knowledge thrown away. Bookmark this, pick one repo from 01 to 05 and ingest your first source tonight. A month from now you have a wiki, and everyone who skipped it is still opening a blank chat.

I still don’t understand why people keep building a Claude second brain by hand when these 10 repos already built the whole system They turn your Claude sessions into a wiki, let Claude read and write your vault from your phone, and one of them comes straight from Obsidian’s own CEO 01 llm-wiki → your Claude Code and Codex sessions become a searchable wiki, with an MCP server to query it 02 llm-wiki-claude-skill → one skill file teaches Claude to ingest sources, answer from them, lint the wiki and compile it into clean pages 03 obsidian-skills → Obsidian’s own CEO teaches Claude how Obsidian really works 04 llm-wiki → a Claude Code plugin with init, ingest, compile, query and lint, where every change is committed to git 05 obsidian-dev-second-brain → your tickets, sprints and project docs live in the vault as notes, and Claude keeps them in sync with the code 06 obsidian-mcp-server → 14 tools to read, write, search and surgically edit notes, tags and frontmatter 07 mcpvault → safe vault access with a read-only mode, and Obsidian doesn’t even need to be running 08 obsidian-claude-code-mcp → connect Claude Code to your open vault with one /ide command 09 obsidian-web-mcp → reach your vault from your phone or any MCP client, with OAuth and a Cloudflare Tunnel 10 obsidian-mcp → a git-backed vault with 18 tools, running locally or on AWS Lambda Nobody is going to build your second brain for you, and every chat you close without one is knowledge thrown away. Bookmark this, pick one repo from 01 to 05 and ingest your first source tonight. A month from now you have a wiki, and everyone who skipped it is still opening a blank chat.

Ryven

10,722 views • 9 days ago

Karpathy sketched the second brain. these 7 open-source repos already built it for Obsidian + Claude Code 250,000+ GitHub stars between them, and every one is free to clone sorted by stars: 1. graphify - 134k stars turns your codebase, docs, SQL schemas and PDFs into one knowledge graph you can query ↳ 2. Understand-Anything - 88k stars maps any codebase into an interactive knowledge graph you can click through ↳ 3. claude-obsidian - 15.8k stars a second brain that organizes itself: drop in a source, Claude Code files it ↳ 4. obsidian-second-brain - 4.9k stars long-term memory for Claude Code, stored as plain markdown in your vault ↳ 5. mcp-obsidian - 4.5k stars one MCP server and Claude can read, search and write your whole vault ↳ 6. claudesidian - 2.6k stars a starter vault designed around Claude Code from the first note ↳ 7. second-brain - 756 stars an Obsidian wiki the model keeps up to date, built on Karpathy's LLM Wiki pattern ↳ where to start: > your knowledge lives in code -> graphify > your knowledge lives in Obsidian -> claude-obsidian > you just want Claude to remember -> obsidian-second-brain > you live in Claude Desktop -> mcp-obsidian the skills that sit on top of all seven are in the full map below ↓

Karpathy sketched the second brain. these 7 open-source repos already built it for Obsidian + Claude Code 250,000+ GitHub stars between them, and every one is free to clone sorted by stars: 1. graphify - 134k stars turns your codebase, docs, SQL schemas and PDFs into one knowledge graph you can query ↳ 2. Understand-Anything - 88k stars maps any codebase into an interactive knowledge graph you can click through ↳ 3. claude-obsidian - 15.8k stars a second brain that organizes itself: drop in a source, Claude Code files it ↳ 4. obsidian-second-brain - 4.9k stars long-term memory for Claude Code, stored as plain markdown in your vault ↳ 5. mcp-obsidian - 4.5k stars one MCP server and Claude can read, search and write your whole vault ↳ 6. claudesidian - 2.6k stars a starter vault designed around Claude Code from the first note ↳ 7. second-brain - 756 stars an Obsidian wiki the model keeps up to date, built on Karpathy's LLM Wiki pattern ↳ where to start: > your knowledge lives in code -> graphify > your knowledge lives in Obsidian -> claude-obsidian > you just want Claude to remember -> obsidian-second-brain > you live in Claude Desktop -> mcp-obsidian the skills that sit on top of all seven are in the full map below ↓

Mr. Buzzoni

30,515 views • 18 days ago

I still don't get why people bother creating a second brain for Claude from scratch when these 10 repositories already provide complete systems They process your sources, organize them into a wiki, verify every single claim, and one of them even operates entirely on your personal machine 1. obsidian-skills-> rightarrow The CEO of Obsidian personally shows Claude the inner workings of Obsidian 2. claude-obsidian-> rightarrow Simply drop any source in, and Claude will read, link, and file it into a unified, connected graph of standard Markdown files that you control 3. obsidian-second-brain-> rightarrow Claude Code retains memory of you across different sessions, featuring 48 commands operating entirely within your Obsidian vault 4. karpathy-llm-wiki-> rightarrow Features a single installation line, followed by ingestion, querying with citations, and linting—all usable within Claude Code, Cursor, Codex, or OpenCode 5. second-brain-> rightarrow Takes raw sources as input and outputs linked wiki pages for easy browsing inside Obsidian 6. second-brain-os-> rightarrow The complete package: includes a 77-page guide, a starter vault, 18 skills, 72 commands, and 6 subagents (four of which are read-only) 7. llm-wiki-> rightarrow Utilizes a two-tier memory system: 10 to 20 rules loaded by Claude during every session, alongside 50 to 200 wiki pages fetched strictly when needed 8. vouch-> rightarrow Agents suggest modifications for your approval, where any claim lacking an explicit source is treated as an error 9. ai-second-brain-> rightarrow Transforms your historical interactions from ChatGPT and Claude into a linked Obsidian vault, which then becomes a wiki 10. LLM_Wiki_SecondBrain-> rightarrow Runs the entire pipeline locally without any cloud APIs (recommended 32 GB of RAM) I recommend adding this to bookmarks and never doing this manually again

I still don't get why people bother creating a second brain for Claude from scratch when these 10 repositories already provide complete systems They process your sources, organize them into a wiki, verify every single claim, and one of them even operates entirely on your personal machine 1. obsidian-skills-> rightarrow The CEO of Obsidian personally shows Claude the inner workings of Obsidian 2. claude-obsidian-> rightarrow Simply drop any source in, and Claude will read, link, and file it into a unified, connected graph of standard Markdown files that you control 3. obsidian-second-brain-> rightarrow Claude Code retains memory of you across different sessions, featuring 48 commands operating entirely within your Obsidian vault 4. karpathy-llm-wiki-> rightarrow Features a single installation line, followed by ingestion, querying with citations, and linting—all usable within Claude Code, Cursor, Codex, or OpenCode 5. second-brain-> rightarrow Takes raw sources as input and outputs linked wiki pages for easy browsing inside Obsidian 6. second-brain-os-> rightarrow The complete package: includes a 77-page guide, a starter vault, 18 skills, 72 commands, and 6 subagents (four of which are read-only) 7. llm-wiki-> rightarrow Utilizes a two-tier memory system: 10 to 20 rules loaded by Claude during every session, alongside 50 to 200 wiki pages fetched strictly when needed 8. vouch-> rightarrow Agents suggest modifications for your approval, where any claim lacking an explicit source is treated as an error 9. ai-second-brain-> rightarrow Transforms your historical interactions from ChatGPT and Claude into a linked Obsidian vault, which then becomes a wiki 10. LLM_Wiki_SecondBrain-> rightarrow Runs the entire pipeline locally without any cloud APIs (recommended 32 GB of RAM) I recommend adding this to bookmarks and never doing this manually again

Bober_smart

39,281 views • 11 days ago

Tried every note plugin before one Karpathy gist automated the whole vault Karpathy published llm-wiki.md. Seven repos already run it. About 255k stars between them. Obsidian is the IDE. The LLM is the programmer. The wiki is the codebase. Three operations run everything. 1. Ingest reads a raw source, writes a wiki summary, updates every related page in the vault 2. Query answers from the wiki and files good answers back as new pages 3. Lint runs periodic checks for contradictions, stale claims, orphan pages, missing cross-references 4. graphify turns codebases, docs and PDFs into a queryable knowledge graph, 137.9k stars 5. claude-obsidian files sources into linked cited notes and answers from the vault, 15.9k stars 6. mcp-obsidian connects one MCP server with 7 tools to read, search and write the whole vault, 4.5k stars Seven repos. ~255k stars. Three gist operations. The gist names a method, not a model. The model is a slot you fill with whatever runs your vault. Drop a source in. The wiki rewrites itself. Lint catches what drifted. Save this ↓

Tried every note plugin before one Karpathy gist automated the whole vault Karpathy published llm-wiki.md. Seven repos already run it. About 255k stars between them. Obsidian is the IDE. The LLM is the programmer. The wiki is the codebase. Three operations run everything. 1. Ingest reads a raw source, writes a wiki summary, updates every related page in the vault 2. Query answers from the wiki and files good answers back as new pages 3. Lint runs periodic checks for contradictions, stale claims, orphan pages, missing cross-references 4. graphify turns codebases, docs and PDFs into a queryable knowledge graph, 137.9k stars 5. claude-obsidian files sources into linked cited notes and answers from the vault, 15.9k stars 6. mcp-obsidian connects one MCP server with 7 tools to read, search and write the whole vault, 4.5k stars Seven repos. ~255k stars. Three gist operations. The gist names a method, not a model. The model is a slot you fill with whatever runs your vault. Drop a source in. The wiki rewrites itself. Lint catches what drifted. Save this ↓

meya.

12,665 views • 14 days ago

CLAUDE CODE + OBSIDIAN = KARPATHY'S SECOND BRAIN, BUILT FROM 7 FREE PLUGINS Andrej Karpathy: "Obsidian is the IDE; the LLM is the programmer; the wiki is the codebase." these 7 free plugins put Claude Code on Opus 5.5 inside that IDE. 38,457 GitHub stars, and your Obsidian vault becomes a second brain that does the work sorted by stars: 1. claudian - 15,849 stars Claude Code or Codex inside your vault, which becomes the agent's working folder ↳ 2. obsidian-copilot - 7,912 stars OpenCode, Claude Code and Codex in one panel next to your notes ↳ 3. smart-connections - 5,527 stars related notes surface while you type, on a local model with no API key ↳ 4. obsidian-local-rest-api - 3,093 stars a REST API plus an MCP server, so Claude Desktop reads and writes your notes ↳ 5. obsidian-agent-client - 2,463 stars chat with Claude Code, Codex or Gemini CLI and @-mention any note ↳ 6. smart-composer - 2,332 stars a chat that knows your whole vault, with one-click edits ↳ 7. obsidian-yolo - 1,378 stars chat, writing, a knowledge base and agent orchestration in one place ↳ where to start: > already paying for Claude Code -> claudian > want linked notes for $0 -> smart-connections > living in Claude Desktop -> obsidian-local-rest-api the person whose notes an agent can read walks into every meeting already briefed, and that is the person who gets the raise Karpathy's method for running a vault with Claude is below ↓

CLAUDE CODE + OBSIDIAN = KARPATHY'S SECOND BRAIN, BUILT FROM 7 FREE PLUGINS Andrej Karpathy: "Obsidian is the IDE; the LLM is the programmer; the wiki is the codebase." these 7 free plugins put Claude Code on Opus 5.5 inside that IDE. 38,457 GitHub stars, and your Obsidian vault becomes a second brain that does the work sorted by stars: 1. claudian - 15,849 stars Claude Code or Codex inside your vault, which becomes the agent's working folder ↳ 2. obsidian-copilot - 7,912 stars OpenCode, Claude Code and Codex in one panel next to your notes ↳ 3. smart-connections - 5,527 stars related notes surface while you type, on a local model with no API key ↳ 4. obsidian-local-rest-api - 3,093 stars a REST API plus an MCP server, so Claude Desktop reads and writes your notes ↳ 5. obsidian-agent-client - 2,463 stars chat with Claude Code, Codex or Gemini CLI and @-mention any note ↳ 6. smart-composer - 2,332 stars a chat that knows your whole vault, with one-click edits ↳ 7. obsidian-yolo - 1,378 stars chat, writing, a knowledge base and agent orchestration in one place ↳ where to start: > already paying for Claude Code -> claudian > want linked notes for $0 -> smart-connections > living in Claude Desktop -> obsidian-local-rest-api the person whose notes an agent can read walks into every meeting already briefed, and that is the person who gets the raise Karpathy's method for running a vault with Claude is below ↓

Mr. Buzzoni

13,216 views • 13 days ago

It's f*cking wild how many people still build their Claude + Obsidian setup by hand, when Obsidian's CEO already open-sourced all the tools 1. obsidian skills · 51K stars by kepano, Obsidian's CEO. Claude stops writing broken Markdown and starts writing real Obsidian: wikilinks, Bases, Canvas, even the CLI 2. defuddle · 9.9K stars by kepano. Claude stops paying tokens for cookie banners, menus and comments. it gets the article and nothing else 3. obsidian clipper · 5.5K stars the official web clipper. one click and any page lands in your vault, ready for Claude 4. obsidian help · 1.9K stars the official docs as plain Markdown, AGENTS.md included. your agent learns Obsidian from the people who built it 5. obsidian importer · 1.7K stars your whole past life in 15 apps, from Notion to Evernote to Apple Notes, turned into Markdown Claude can actually read install one tonight and Claude stops guessing how Obsidian works from the very first prompt save it, your vault will thank you

It's f*cking wild how many people still build their Claude + Obsidian setup by hand, when Obsidian's CEO already open-sourced all the tools 1. obsidian skills · 51K stars by kepano, Obsidian's CEO. Claude stops writing broken Markdown and starts writing real Obsidian: wikilinks, Bases, Canvas, even the CLI 2. defuddle · 9.9K stars by kepano. Claude stops paying tokens for cookie banners, menus and comments. it gets the article and nothing else 3. obsidian clipper · 5.5K stars the official web clipper. one click and any page lands in your vault, ready for Claude 4. obsidian help · 1.9K stars the official docs as plain Markdown, AGENTS.md included. your agent learns Obsidian from the people who built it 5. obsidian importer · 1.7K stars your whole past life in 15 apps, from Notion to Evernote to Apple Notes, turned into Markdown Claude can actually read install one tonight and Claude stops guessing how Obsidian works from the very first prompt save it, your vault will thank you

Brucky

89,934 views • 4 days ago

I genuinely don't understand why everyone isn't using this yet. Andrej Karpathy, OpenAI co-founder, posted a simple idea that went massively viral: Stop using AI to write code. Use it to build a second brain. You point Claude Code at a folder. Drop in any source: an article, a transcript, a PDF. Claude reads it, links it, files it into a living wiki of everything you know. It compounds like interest. The more you feed it, the smarter it gets. Here's the whole thing: 1) Install Obsidian 2) Create a vault 3) Open it in Claude Code 4) Paste Karpathy's wiki idea and tell Claude to build it 5) Claude makes three folders: - raw (for sources) - wiki (for its pages) - CLAUDE. md (that runs it) 6) Drop any source into raw and say: "ingest this" 7) Ask questions across everything, forever Five minutes to set up and you never start from a blank chat again. Full step by step guide below.

I genuinely don't understand why everyone isn't using this yet. Andrej Karpathy, OpenAI co-founder, posted a simple idea that went massively viral: Stop using AI to write code. Use it to build a second brain. You point Claude Code at a folder. Drop in any source: an article, a transcript, a PDF. Claude reads it, links it, files it into a living wiki of everything you know. It compounds like interest. The more you feed it, the smarter it gets. Here's the whole thing: 1) Install Obsidian 2) Create a vault 3) Open it in Claude Code 4) Paste Karpathy's wiki idea and tell Claude to build it 5) Claude makes three folders: - raw (for sources) - wiki (for its pages) - CLAUDE. md (that runs it) 6) Drop any source into raw and say: "ingest this" 7) Ask questions across everything, forever Five minutes to set up and you never start from a blank chat again. Full step by step guide below.

CyrilXBT

332,891 views • 4 months ago

These three tools let Claude organize your Obsidian second brain for you. claude-obsidian reads, links and files any article or transcript into your notes. ai-second-brain turns your old ChatGPT and Claude chats into a linked Obsidian vault. LLM_Wiki_SecondBrain runs the whole thing on your computer, with no cloud. Follow for more AI tips like this. #obsidian #claude #secondbrain #ai #productivity

These three tools let Claude organize your Obsidian second brain for you. claude-obsidian reads, links and files any article or transcript into your notes. ai-second-brain turns your old ChatGPT and Claude chats into a linked Obsidian vault. LLM_Wiki_SecondBrain runs the whole thing on your computer, with no cloud. Follow for more AI tips like this. #obsidian #claude #secondbrain #ai #productivity

morenicksaraev

24,400 views • 5 days ago

It is becoming f*cking dangerous: when Anthropic shipped CLAUDE.md, they didn't even realize they were opening a Pandora's box 1. Make an empty folder on your computer, call it SECOND BRAIN 2. Open Claude Code inside it 3. Add subfolders: MEMORY/, notes/, people/, projects/ 4. Drop a CLAUDE.md in the root with one rule: save every key fact to MEMORY, one topic per file 5. Add @-links in CLAUDE.md so key files load into context every session 6. Run claude mcp add to connect Playwright MCP, now Claude controls a real browser 7. Build a skill in .claude/skills/ so one command runs the entire routine Folder setup: about 5 minutes Your Claude becomes a second brain: it keeps every key fact between sessions, loads your main files by itself and drives a real browser Full guide in the article below

It is becoming f*cking dangerous: when Anthropic shipped CLAUDE.md, they didn't even realize they were opening a Pandora's box 1. Make an empty folder on your computer, call it SECOND BRAIN 2. Open Claude Code inside it 3. Add subfolders: MEMORY/, notes/, people/, projects/ 4. Drop a CLAUDE.md in the root with one rule: save every key fact to MEMORY, one topic per file 5. Add @-links in CLAUDE.md so key files load into context every session 6. Run claude mcp add to connect Playwright MCP, now Claude controls a real browser 7. Build a skill in .claude/skills/ so one command runs the entire routine Folder setup: about 5 minutes Your Claude becomes a second brain: it keeps every key fact between sessions, loads your main files by itself and drives a real browser Full guide in the article below

plusxbt

69,512 views • 19 days ago

Obsidian CEO actually released the skill that lets your AI agent run your entire vault for you. It's called obsidian-skills. Install it into Claude Code, Codex, or OpenCode, and your agent can read, create, search, and organize notes directly, plus handle Markdown, Bases, and Canvas files without you touching a thing. This is the missing piece for an AI second brain. Your notes live in Obsidian, and now the agent actually knows how to work them. Want the full picture? We broke down how to build a complete AI second brain from scratch in the article below.

Obsidian CEO actually released the skill that lets your AI agent run your entire vault for you. It's called obsidian-skills. Install it into Claude Code, Codex, or OpenCode, and your agent can read, create, search, and organize notes directly, plus handle Markdown, Bases, and Canvas files without you touching a thing. This is the missing piece for an AI second brain. Your notes live in Obsidian, and now the agent actually knows how to work them. Want the full picture? We broke down how to build a complete AI second brain from scratch in the article below.

Simplifying AI

68,025 views • 3 months ago

Andrej Karpathy quietly shipped the best second brain idea in years not an app. a pattern. let an llm maintain a wiki of your notes. you dump sources, it reads them, links them, files them. knowledge compounds like interest. someone built it into a free claude code plugin. setup is two commands: claude plugin marketplace add AgriciDaniel/claude-obsidian claude plugin install claude-obsidian@agricidaniel-claude-obsidian then open obsidian, open claude code in the same folder, type /wiki. that's it. your notes are now queryable by claude and they get richer every time you read something. bookmark this. best thing you'll build this weekend.

Andrej Karpathy quietly shipped the best second brain idea in years not an app. a pattern. let an llm maintain a wiki of your notes. you dump sources, it reads them, links them, files them. knowledge compounds like interest. someone built it into a free claude code plugin. setup is two commands: claude plugin marketplace add AgriciDaniel/claude-obsidian claude plugin install claude-obsidian@agricidaniel-claude-obsidian then open obsidian, open claude code in the same folder, type /wiki. that's it. your notes are now queryable by claude and they get richer every time you read something. bookmark this. best thing you'll build this weekend.

Avid

339,848 views • 5 months ago

This is f*cking insane, the CEO of Y Combinator open-sourced his own second brain and most people still don’t know it exists 8 second brain repos you haven’t seen yet: -> gbrain (by garrytan) the second brain of the YC CEO, every fact keeps its source and every agent shares one memory -> llm wiki (by karpathy) the original idea file behind all of this -> ai-memory (by akitaonrails) hand the work from Claude Code to Codex without losing context, memory lives in plain markdown -> agent second brain (by smixs) send a voice note in Telegram and it lands as a linked note in your Obsidian vault -> cog second brain (by huytieu) 33 skills and 10 agents running on plain markdown, no database -> open second brain (by itechmeat) a nightly pass turns the corrections you keep repeating into rules your agent follows -> claude second brain (by jessepinkman9900) one npx command scaffolds Obsidian, Claude Code and local search -> baalda (by naveedharri) a team second brain where people and agents edit the same markdown files the CEO of Y Combinator runs his agents on this you are still digging through bookmarks

This is f*cking insane, the CEO of Y Combinator open-sourced his own second brain and most people still don’t know it exists 8 second brain repos you haven’t seen yet: -> gbrain (by garrytan) the second brain of the YC CEO, every fact keeps its source and every agent shares one memory -> llm wiki (by karpathy) the original idea file behind all of this -> ai-memory (by akitaonrails) hand the work from Claude Code to Codex without losing context, memory lives in plain markdown -> agent second brain (by smixs) send a voice note in Telegram and it lands as a linked note in your Obsidian vault -> cog second brain (by huytieu) 33 skills and 10 agents running on plain markdown, no database -> open second brain (by itechmeat) a nightly pass turns the corrections you keep repeating into rules your agent follows -> claude second brain (by jessepinkman9900) one npx command scaffolds Obsidian, Claude Code and local search -> baalda (by naveedharri) a team second brain where people and agents edit the same markdown files the CEO of Y Combinator runs his agents on this you are still digging through bookmarks

Ryven

272,593 views • 4 days ago

I can’t f*cking believe people still aren’t using this: Obsidian’s own CEO and team open-sourced the tools that make Claude work inside your vault, and they’re all free -> obsidian skills (by kepano) Obsidian’s CEO teaches Claude to write real Obsidian files: Markdown with wikilinks, Bases and Canvas, plus the Obsidian CLI -> defuddle (by kepano) strips any web page down to clean Markdown, so Claude reads the article and not the sidebars, and burns fewer tokens doing it -> obsidian importer (by obsidianmd) moves your whole history from Notion, Evernote, Apple Notes, Roam, Bear and OneNote into Markdown, so your agent can finally read it -> obsidian help (by obsidianmd) the official Obsidian docs as plain Markdown with an AGENTS.md file, so your agent learns Obsidian from the source -> obsidian clipper (by obsidianmd) the official web clipper that saves any page straight into your vault pick one, install it tonight and your Claude writes real Obsidian files from the first prompt bookmark it before it gets buried

I can’t f*cking believe people still aren’t using this: Obsidian’s own CEO and team open-sourced the tools that make Claude work inside your vault, and they’re all free -> obsidian skills (by kepano) Obsidian’s CEO teaches Claude to write real Obsidian files: Markdown with wikilinks, Bases and Canvas, plus the Obsidian CLI -> defuddle (by kepano) strips any web page down to clean Markdown, so Claude reads the article and not the sidebars, and burns fewer tokens doing it -> obsidian importer (by obsidianmd) moves your whole history from Notion, Evernote, Apple Notes, Roam, Bear and OneNote into Markdown, so your agent can finally read it -> obsidian help (by obsidianmd) the official Obsidian docs as plain Markdown with an AGENTS.md file, so your agent learns Obsidian from the source -> obsidian clipper (by obsidianmd) the official web clipper that saves any page straight into your vault pick one, install it tonight and your Claude writes real Obsidian files from the first prompt bookmark it before it gets buried

Ryven

40,189 views • 6 days ago

I can't f*cking believe this: the CEO of Y Combinator put his own second brain on GitHub, and it's one clone away from being yours 7 second brains you probably haven't seen, all ready to clone tonight: 1. gbrain · 32.4K stars Garry Tan's own agent brain. every fact remembers where it came from, and all his agents share one memory 2. Karpathy's llm wiki · 50K stars the one-page idea file that started this whole wave 3. ai memory · 13.7K stars quit Claude Code mid-task and pick it up in Codex without losing a thing. memory lives in plain markdown 4. COG second brain · 1.4K stars 35 skills and 10 agents, no database. just markdown files that think 5. agent second brain send a voice note on Telegram and it lands as a linked note in Obsidian, or a task in Todoist 6. open second brain every night it turns the corrections you keep repeating into rules your agent follows 7. claude second brain one npx command sets up Obsidian, Claude Code and local search together the man who funds the next Airbnb runs his agents on this. yours still forgets you overnight save it so you don't lose it

I can't f*cking believe this: the CEO of Y Combinator put his own second brain on GitHub, and it's one clone away from being yours 7 second brains you probably haven't seen, all ready to clone tonight: 1. gbrain · 32.4K stars Garry Tan's own agent brain. every fact remembers where it came from, and all his agents share one memory 2. Karpathy's llm wiki · 50K stars the one-page idea file that started this whole wave 3. ai memory · 13.7K stars quit Claude Code mid-task and pick it up in Codex without losing a thing. memory lives in plain markdown 4. COG second brain · 1.4K stars 35 skills and 10 agents, no database. just markdown files that think 5. agent second brain send a voice note on Telegram and it lands as a linked note in Obsidian, or a task in Todoist 6. open second brain every night it turns the corrections you keep repeating into rules your agent follows 7. claude second brain one npx command sets up Obsidian, Claude Code and local search together the man who funds the next Airbnb runs his agents on this. yours still forgets you overnight save it so you don't lose it

Brucky

145,986 views • 2 days ago

Karpathy dropped a viral post about building a "second brain" with AI. We built it live in under 20 minutes. The system: 1. Three folders: raw/ (brain dump), wiki/ (AI organizes it), outputs/ (query results) 2. One-click install: npx skills add NicholasSpisak/second-brain 3. Obsidian Web Clipper to capture any article with one click 4. Run "ingest" and the AI reads everything in raw/, builds wiki pages, and maps connections automatically 5. Query your own knowledge base like talking to an expert 6. Monthly lint command catches contradictions and gaps before they compound Day 1 it's basic. Day 90 it's a company asset nobody else has. Free skill in the YouTube description that scaffolds the whole thing in 60 seconds. Video below, YouTube link in the replies.

Karpathy dropped a viral post about building a "second brain" with AI. We built it live in under 20 minutes. The system: 1. Three folders: raw/ (brain dump), wiki/ (AI organizes it), outputs/ (query results) 2. One-click install: npx skills add NicholasSpisak/second-brain 3. Obsidian Web Clipper to capture any article with one click 4. Run "ingest" and the AI reads everything in raw/, builds wiki pages, and maps connections automatically 5. Query your own knowledge base like talking to an expert 6. Monthly lint command catches contradictions and gaps before they compound Day 1 it's basic. Day 90 it's a company asset nobody else has. Free skill in the YouTube description that scaffolds the whole thing in 60 seconds. Video below, YouTube link in the replies.

Corey Ganim

129,149 views • 7 months ago

It is becoming f*cking dangerous: Claude Code has kept its own memory folder since February and you've probably never opened it 1. Open any project in Claude Code and type /memory 2. Check the auto memory toggle, it is on by default in local sessions 3. Pick the option to open the auto memory folder 4. Read MEMORY.md first, it is the index, one line per memory 5. Look at the files: one memory each, typed user, feedback, project or reference 6. Tell Claude "remember: always use pnpm, not npm" and watch it save a new memory 7. Edit or delete any wrong memory, it is plain markdown Only the first 200 lines or 25KB of MEMORY.md load each session, Claude opens the topic files when needed Ask Claude to remember what matters once, it stays until you or Claude edit or delete it Full guide in the article below

It is becoming f*cking dangerous: Claude Code has kept its own memory folder since February and you've probably never opened it 1. Open any project in Claude Code and type /memory 2. Check the auto memory toggle, it is on by default in local sessions 3. Pick the option to open the auto memory folder 4. Read MEMORY.md first, it is the index, one line per memory 5. Look at the files: one memory each, typed user, feedback, project or reference 6. Tell Claude "remember: always use pnpm, not npm" and watch it save a new memory 7. Edit or delete any wrong memory, it is plain markdown Only the first 200 lines or 25KB of MEMORY.md load each session, Claude opens the topic files when needed Ask Claude to remember what matters once, it stays until you or Claude edit or delete it Full guide in the article below

plusxbt

19,632 views • 14 days ago

This is f*cking gold. One repo from Obsidian’s CEO teaches agents how your vault works. 10 more give them memory, search and everything you save 01 obsidian-skills → teaches Claude Code, Codex and other agents to write notes, bases and canvases in your vault the way Obsidian expects 02 obsidian-copilot → runs Claude Code, Codex and OpenCode inside your vault, local models included 03 supermemory → remembers facts about you, rewrites the ones you contradict and drops the ones that expire 04 khoj → ask your notes, PDFs and the web one question, on your own server 05 obsidian-smart-connections → finds the notes you forgot you wrote while you type, no API key needed 06 karakeep → saves anything, tags it with AI and finds it later, on your own server 07 siyuan → you and your AI agents edit the same notes on your own server 08 zk → a plain-text wiki you run from the terminal 09 silverbullet → Markdown notes you can program with Lua 10 memos → quick notes on a timeline, found by search, tag or date 11 trilium → notes in a hierarchy big enough for a whole personal knowledge base

This is f*cking gold. One repo from Obsidian’s CEO teaches agents how your vault works. 10 more give them memory, search and everything you save 01 obsidian-skills → teaches Claude Code, Codex and other agents to write notes, bases and canvases in your vault the way Obsidian expects 02 obsidian-copilot → runs Claude Code, Codex and OpenCode inside your vault, local models included 03 supermemory → remembers facts about you, rewrites the ones you contradict and drops the ones that expire 04 khoj → ask your notes, PDFs and the web one question, on your own server 05 obsidian-smart-connections → finds the notes you forgot you wrote while you type, no API key needed 06 karakeep → saves anything, tags it with AI and finds it later, on your own server 07 siyuan → you and your AI agents edit the same notes on your own server 08 zk → a plain-text wiki you run from the terminal 09 silverbullet → Markdown notes you can program with Lua 10 memos → quick notes on a timeline, found by search, tag or date 11 trilium → notes in a hierarchy big enough for a whole personal knowledge base

Ryven

12,616 views • 11 days ago

KARPATHY WROTE THIS DOCUMENT TO COMPLETELY AUTOMATE OBSIDIAN WITH CLAUDE I was ready to abandon my second brain cross-linking every note by hand was killing the system, and one page from Karpathy changed how I run the whole vault his method makes Claude the full-time caretaker of your Zettelkasten: > every source you drop in gets folded into a structured wiki > Obsidian is the IDE, Claude Opus 5.5 is the programmer, the wiki is the codebase > scheduled passes flag notes that contradict each other > links between ideas appear without you typing a single one now I feed it raw files and it handles the rest second brain courses sell this for $500 Karpathy put it in a free gist, and it runs on a $20 Claude plan start here: 📁 Karpathy's LLM Wiki ↳ 📁 Obsidian ↳

KARPATHY WROTE THIS DOCUMENT TO COMPLETELY AUTOMATE OBSIDIAN WITH CLAUDE I was ready to abandon my second brain cross-linking every note by hand was killing the system, and one page from Karpathy changed how I run the whole vault his method makes Claude the full-time caretaker of your Zettelkasten: > every source you drop in gets folded into a structured wiki > Obsidian is the IDE, Claude Opus 5.5 is the programmer, the wiki is the codebase > scheduled passes flag notes that contradict each other > links between ideas appear without you typing a single one now I feed it raw files and it handles the rest second brain courses sell this for $500 Karpathy put it in a free gist, and it runs on a $20 Claude plan start here: 📁 Karpathy's LLM Wiki ↳ 📁 Obsidian ↳

Mr. Buzzoni

24,618 views • 18 days ago

I still don't understand why everyone is not using this yet. Thanks to it, a year ago I increased my income to 15,000 dollars a month Andrey Karpathy, co-founder of OpenAI, published a simple idea that got 25 million views: stop using AI to write code, use it to build a second brain You point Claude Code to a folder, drop any source in there (an article, transcript, PDF) and Claude reads it, links it, and saves it into a living wiki of everything you know. It compounds like interest: the more you feed it, the smarter it gets Here is the gist: Install Obsidian, create a vault, open it in Claude Code Paste the file with Karpathy's wiki idea and tell Claude to build it Claude creates three folders: raw for sources, wiki for its pages, CLAUDE which runs everything Drop any source into raw and say ingest this Ask questions across everything, forever 5 minutes to set up, and you never start with an empty chat again The full instructions can be found in the article below

I still don't understand why everyone is not using this yet. Thanks to it, a year ago I increased my income to 15,000 dollars a month Andrey Karpathy, co-founder of OpenAI, published a simple idea that got 25 million views: stop using AI to write code, use it to build a second brain You point Claude Code to a folder, drop any source in there (an article, transcript, PDF) and Claude reads it, links it, and saves it into a living wiki of everything you know. It compounds like interest: the more you feed it, the smarter it gets Here is the gist: Install Obsidian, create a vault, open it in Claude Code Paste the file with Karpathy's wiki idea and tell Claude to build it Claude creates three folders: raw for sources, wiki for its pages, CLAUDE which runs everything Drop any source into raw and say ingest this Ask questions across everything, forever 5 minutes to set up, and you never start with an empty chat again The full instructions can be found in the article below

Bober_smart

98,106 views • 5 days ago