BUILD KARPATHY'S SECOND BRAIN WITH CLAUDE FABLE 5 + OBSIDIAN
Andrej Karpathy (openai co-founder) shared an architecture that turns Claude into a persistent second brain instead of a basic chat window
how it works:
> you point Claude Code at an Obsidian vault folder
> you drop articles, PDFs, or video transcripts into raw folders
> Claude reads the files, updates topic summaries, and cross-references everything
> the knowledge base compounds like interest instead of resetting on every new chat
the setup is simple:
> install and create a local vault directory
> open the directory in Claude Code and paste Karpathy's wiki prompt:
>
> let the agent generate raw, wiki, and CLAUDE.md schema directories
> drop any text file into raw and tell the model to ingest it
> ask questions across the whole vault and query compiled summaries
this eliminates rag database overhead and keeps your local vault organized
how do you manage your local knowledge base?