Turn your ChatGPT, Claude, and Gemini history into an Andrey Karpathy's LLM-Wiki mindmap — structured Markdown you can browse in Obsidian-style tools and explore as a graph in MemHub.

MemHub is your context control panel for AI agents. This guide walks through exporting chat history, importing it into MemHub, exploring the Mindmap, and downloading a Markdown ZIP (“Mindmap Markdowns”) for your second brain — without writing code or using Claude Code.

MemHub extracts AI memory and context from your chats, stores it in an encrypted vector database, and organizes it in a file layout that tools like Obsidian work well with.

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Quick links

1. Install the Chrome Extension

These steps match the in-product Instructions panel when ChatGPT is selected in MemHub.

1. Go to MemHub Chrome extension
2. Add XTrace Memory to your browser.

2. Export from ChatGPT (OpenAI) / Claude (Anthropic) / Gemini (Google)

1. Open ChatGPT/Claude/Gemini in your browser.
2. Click the XTrace Memory extension in the Extensions.
3. Sign in
4. You would see a Memory button at your top right, click it
5. Click export the last N chats you have. Recommend you to put a smaller number if you not sure how much

3. Go to MemHub and Wait

It could take a few minutes for AI to search through your data and extracts memories. Go to MemHub to see your memories getting created in realtime

4. Export Markdown (LLM-Wiki ZIP)

1. On Memories, click Export (download icon).

2. The modal title is Export Markdown — subtitle ZIP for Mindmap Markdowns.

3. Adjust optional filters:

   • Scope: Beliefs (facts), Artifacts, Episodes
   • Date range (leave empty for all time)
   • Platform: memhub, chatgpt, gemini, claude, other
   • Belief type / Artifact type
   • Content density: Full (YAML + body) vs Compact
   • Link style: Standard vs Relationship (wikilinks for supersession, linked facts, etc.)
   • We suggest keep everything as default
   

4. Click Confirm export and save the ZIP.

5. Unzip into your Obsidian vault or any Markdown wiki.

5. View on Obsidian

1. Make sure your downloaded file is unzipped
2. Open your Obsidian app
3. On the top of the window, File -> Open Vault -> select the unzipped folder -> Open

License

Documentation in this repository is licensed under CC BY 4.0.

XTrace, MemHub, and related trademarks belong to their owners. This repo is an unofficial community/education guide unless explicitly published by XTrace.