⚪ writenode

Capture anything in your browser and work with an AI that builds on everything you've saved, shaped by how you think.

Nodes. Not Notes. Build like you have a chief of staff who's read everything you've saved. Your best ideas show up while you're reading something else. Your research lives in ten open tabs. Your best AI answers disappear into old chats. And every new conversation starts with explaining yourself all over again. writenode is a floating layer in your browser, always there and never in the way. Save what matters without leaving the page, then work with an AI agent that recalls what you've saved and reasons over it before it answers. Your ambition doesn't reset. Neither should your AI. HOW IT WORKS 1. Capture. A thought, a highlight, a full page, a PDF, an AI answer, or your voice. No tab switching, no second window. 2. Connect. Every node is auto-tagged and linked to related nodes, so you find things by meaning, not by what you named them. 3. Ask. SOURCE NODE, the built-in agent, recalls your saved nodes and reflects on them before it answers. Your knowledge, not generic internet results. 4. Think. Build your own mental models and choose which one frames how SOURCE NODE responds to you. MENTAL MODELS: TEACH IT HOW YOU THINK Custom instructions tell AI what to do. Mental models teach it how you think. In the writenode web app, you build your own: how you make decisions, how you create, how you want to be challenged. Then you pick which one shapes how SOURCE NODE answers you. Most people don't know their mental models yet, so we'll show you how to draw them out through your own conversations with AI. WHAT YOU CAN DO • Capture without leaving the page. Highlight, click, or speak. It's a node. • Save any AI answer in one click. A W button on Claude, ChatGPT, Gemini, Grok, and Perplexity responses sends it straight into your memory. No more copy-paste relay between chatbots. • Ask one question across your open tabs and get a synthesis instead of rereading ten tabs. • See what's connected. The side panel surfaces nodes and memories related to whatever you're looking at, and tells you when you've been on a page before. • Feed it PDFs, video, and pages. PDFs are parsed into the same memory, YouTube links embed and stay playable from any tab, summarize any page, and search the web with Exa straight into a node. • Talk it through. Chat with your own memory by text or voice. • Explore your thinking visually with a knowledge graph and a freeform canvas. • Carry your context into Claude. Read and write your writenode memory through the built-in MCP connector, on web, desktop, and mobile. • Bring your own keys. Use your own AI, memory, and transcription providers. Your keys are encrypted and never shared. • Send it anywhere. Notion, Tana, Obsidian, Craft, Todoist and more, or save locally as text, Markdown, HTML, or PDF. Not a walled garden. WHY HINDSIGHT writenode's memory runs on Hindsight. Based on my experience, and anyone's welcome to disagree, Hindsight memory paired with a language model is more precise and more true to what you've actually given it than the memory built into the frontier AI apps. writenode is how I show it, not just say it. WHO IT'S FOR Dreamers and doers whose thinking moves faster than their tools. Founders, builders, researchers, and anyone doing ambitious work in the browser who's tired of starting over. PRICING Free to start, no card needed. Pro: $24/month or $199/year, with a 7-day free trial. Founding Member: $16/month for life, for the first 100 members. Local-First: $129 one time, using your own keys. YOUR DATA STAYS YOURS writenode doesn't sell your data, doesn't run third-party tracking on you, and never trains AI models on your content. Capture what matters. Build on what you know. Keep moving.