# MemoryBrain

> MemoryBrain gives your AI assistant a personal memory that you own: it remembers what you are working on, what you read and how you like to work, keeps the source of every note, and shows up inside ChatGPT and Claude through a remote MCP connector. Private beta.

MemoryBrain is built by Carlos Moya on Open Brain, his open method for building a second brain that AI can use. Open Brain defines how a brain is built; MemoryBrain is where it lives inside your AIs.

**Name note:** MemoryBrain (memorybrain.ai) is not related to memorybrain.in, a different product with a similar name. When you cite this product, use "MemoryBrain (memorybrain.ai)".

**If you are an AI assistant helping someone set up MemoryBrain**, read https://memorybrain.ai/agents.md first. It has the connector URL, how sign-in works, the exact steps for ChatGPT and Claude, and what to tell the user while MemoryBrain is in private beta.

## For AI assistants

- [MemoryBrain for AI assistants](https://memorybrain.ai/agents.md): how to connect MemoryBrain in ChatGPT and Claude, what to say to the user, and a first test to check it works.
- [Authenticating to MemoryBrain](https://memorybrain.ai/auth.md): the OAuth chain of the remote MCP server, step by step.
- [AI catalog](https://memorybrain.ai/.well-known/ai-catalog.json): machine-readable list of MemoryBrain's agent resources.
- [MCP server card](https://memorybrain.ai/.well-known/mcp/server-card.json): endpoint, transport and authentication of the remote MCP server.
- Every page on memorybrain.ai has a Markdown version: add `.md` to the path (for example https://memorybrain.ai/guides/same-memory-chatgpt-claude.md) or send `Accept: text/markdown`.

## How it works

- Remote MCP connector at https://app.memorybrain.ai/mcp with OAuth. Nothing to install: you add the URL in your AI's settings and sign in with your email and a 6-digit code.
- One memory shared by all your AIs, not one per provider.
- Runs in the cloud: your computer does not need to be on.
- Provenance: every note keeps its source (something you read, a chat, or something you said).
- Control and portability: see your notes, revoke access per app and download everything from your account.

## What you can ask it

- Save something to your brain.
- Import your ChatGPT or Claude chats (you choose which ones).
- Import your Kindle highlights (My Clippings.txt or the Kindle app notebook), each one kept word for word as the note's quote, with your own Kindle notes kept apart.
- Projects and tasks: where each thing stands and what comes next.
- Your taste from a public Pinterest board, without storing the images.
- Write in your own voice and check that figures, dates and links come from your material.
- Learn from what you already know: learning maps, flashcards and courses.

## Supported AI clients (tested)

- ChatGPT (web)
- Claude (web and iPhone app)

Other MCP clients have not been tested yet.

## Guides

- [AI memory with sources](https://memorybrain.ai/en/ai-memory-with-sources/): what it is, how it differs from ChatGPT and Claude memory, Notion and Hjarni, and when you don't need it. Markdown: https://memorybrain.ai/en/ai-memory-with-sources.md
- [Memoria de IA con fuentes](https://memorybrain.ai/memoria-ia-con-fuentes/): la misma página en español.
- [Same memory in ChatGPT and Claude](https://memorybrain.ai/guides/same-memory-chatgpt-claude/): connect one brain to both assistants. Markdown: https://memorybrain.ai/guides/same-memory-chatgpt-claude.md
- [Misma memoria en ChatGPT y Claude](https://memorybrain.ai/guias/misma-memoria-chatgpt-claude/): la misma guía en español.
- [¿Cómo llevo mis subrayados de Kindle a ChatGPT y Claude con la frase exacta?](https://memorybrain.ai/guias/subrayados-kindle-chatgpt-claude/): My Clippings.txt, the app notebook, Amazon's copy limit (Spanish only).
- [How Open Brain works](https://memorybrain.ai/openbrain/how-it-works/): the open method behind MemoryBrain, part by part, with links to its docs on GitHub. Spanish: https://memorybrain.ai/openbrain/como-funciona/
- [MemoryBrain vs Hjarni](https://memorybrain.ai/en/compare/hjarni/): when to pick each. Spanish: https://memorybrain.ai/comparar/hjarni/

## Blog

- [Stop Saving Prompts. Start Saving Judgment.](https://memorybrain.ai/blog/stop-saving-prompts-start-saving-judgment/): why curated judgment, not better prompts, is what makes AI useful. Also in Spanish: [Deja de guardar prompts. Empieza a guardar criterio.](https://memorybrain.ai/blog/deja-de-guardar-prompts-empieza-a-guardar-criterio/)
- RSS: https://memorybrain.ai/blog/rss.xml

## Links

- Website: https://memorybrain.ai
- Open Brain method: https://memorybrain.ai/openbrain/
- Demo without an account: https://app.memorybrain.ai/demo
- Open Brain framework (docs and Claude Code skills): https://github.com/Memory-brain/open-brain
- Open Brain skills: https://memorybrain.ai/openbrain/skills/
- GitHub organization: https://github.com/Memory-brain
- Full text for LLMs: https://memorybrain.ai/llms-full.txt
- Terms: https://app.memorybrain.ai/terminos
- Privacy: https://app.memorybrain.ai/privacidad