# DoppelBrain: Full Documentation URL: https://www.doppelbrain.ai Last updated: 2026-10-29 --- ## Canonical definition DoppelBrain is a personal memory built from your browsing and AI chats. A lightweight browser extension remembers what you read, and your AI assistants connect via the Model Context Protocol (MCP) so every model already has your context. ## Hero **Stop explaining yourself to AI. Give it your memory.** DoppelBrain is a personal memory built from your browsing and AI chats, so every model you use already has your context. A lightweight Chrome extension remembers what matters, then plugs into ChatGPT, Claude, Cursor, and any other client that speaks MCP (Model Context Protocol). Free during the public Beta. No credit card required. Works with Chrome. ## How it works (three steps) 1. **Install and pin it.** Add the Chrome extension and pin it, so the brain sits in your toolbar, one click away on any page you read. 2. **Keep reading like you always do.** DoppelBrain quietly remembers the articles and pages you read. Nothing to file, nothing to tag. 3. **Find or ask anything.** Open the side panel and ask in your own words, in any language, or connect any MCP client and let it pull your context. ## Features - **Side panel on any page.** Ask about what you are reading, or anything you have read before. Answers come with the source attached. - **Find anything you read.** Full-text search across everything, months back, no exact keywords needed. - **Sorts itself out.** Topics and domains are organized automatically. No folders, no tags. ## Before and after Without DoppelBrain: - Re-explain your interests and preferences to Claude every new chat. - Search 47 browser tabs to find that article you read last week. - Copy-paste background info into ChatGPT before every prompt. - Lose track of insights scattered across bookmarks, saved posts, and chats. With DoppelBrain: - Claude already knows your reading history, interests, and past conversations. - "What was that article about negotiation techniques?" and get the answer instantly. - ChatGPT pulls your relevant knowledge automatically via MCP. - Everything organized and searchable in one place. ## Who it is for - **Researchers and PhD candidates.** Surface every paper, every note, every tangent across years of browsing. Ask your own archive anything and get answers with citations. - **AI power users.** Stop pasting the same context into every prompt. Claude, ChatGPT, Cursor, and every MCP client pull your knowledge on demand. - **Knowledge workers and analysts.** Turn every article, Slack link, and tab you did not get to into searchable, cited answers. Nothing falls through the cracks. ## Supported MCP clients - Claude - ChatGPT / Codex - Cursor - VS Code - Windsurf - Cline - OpenClaw - n8n - Notion ## Privacy and security - **GDPR Compliant.** Full EU data protection compliance. Export or delete your data anytime. - **Pursuing SOC 2.** Enterprise-grade security controls are in place. Type II certification is on our roadmap. - **No AI Training.** Your data is never used to train models. Private by default. ## Frequently asked questions ### 1. What does DoppelBrain actually do? DoppelBrain remembers what you read online. It also remembers your chats with AI helpers like ChatGPT. It tidies things up by topic on its own. Later, you can find anything just by asking. Even months down the road. ### 2. How do I set it up? Sign up with your email, then add DoppelBrain to Chrome and pin it. Turn on your memory in one click, no forms. From then on the things you read are quietly remembered, and you can ask about any page right from the side panel. You don't need to tag, file, or organize a thing. ### 3. How do I ask DoppelBrain about a page? Click the DoppelBrain icon and a side panel opens on any page. Ask about what you're looking at, or anything you've read before. A little chip shows what it's doing: Remembering, Paused, or Blocked. ### 4. How does it work with ChatGPT or Claude? Open your dashboard. There's a one-click setup for ChatGPT, Claude, and others. Once connected, they use what you've already read. You get better, more personal answers. No more repeating your background story. ### 5. Where is my information kept and is it safe? It's stored in your own account, encrypted on the way to us, and no other user can reach it. To make your reading searchable and to answer your questions, DoppelBrain processes it on our servers and sends the relevant parts to the AI model you asked. We never sell it and we never use it to train AI, and you can delete everything at any time. ### 6. Is my reading used to train AI? No, never. What you read is yours. We don't train AI on it, we don't share it, and we don't sell it. ### 7. Can I delete everything if I want to leave? Yes, any time. One click in your dashboard wipes it all. You can also download a copy first if you'd like. We don't keep hidden copies. ### 8. Do I have to organize or tag things myself? Not at all. DoppelBrain groups your reading by topic on its own. No folders to manage. Nothing for you to file. Just read the way you always have. ### 9. Can it suggest things to read or check out next? Yes. DoppelBrain learns what you care about. It can suggest articles, sites, and even places to go that match your interests. You stay in control. It's just a friendly nudge, never spam. ### 10. How much does it cost? DoppelBrain is free during Beta. No credit card needed. We'll tell you before that changes. Beta users get a nice discount on any paid plan. ### 11. How is this different from saving bookmarks? A bookmark only saves the link. DoppelBrain remembers what was actually inside the article. You can search by what it was about, even if you forget the website. It also remembers your AI chats. Bookmarks can't do that. ### 12. Can I search my reading history in my own words? Yes. Open the side panel on any page (or your dashboard) and type something like "that article about better sleep". DoppelBrain finds it and gives you a short summary. Ask follow-up questions too, and it answers in your language, with the original article attached. ### 13. Will ChatGPT or Claude remember our past conversations? Normally they forget the moment you close the chat. Connect them to DoppelBrain and they can look back at past conversations. They pick up where you left off. It's the simplest way to give them a real memory. ## Contact - Email: hello@doppelbrain.ai - Website: https://www.doppelbrain.ai --- *Generated at 2026-10-29*