sum.md — AI knowledge base & context

Save pages, YouTube videos, articles & tweets in one click — auto-summarized into a knowledge base your AI agents can use.

sum.md is a personal knowledge base for the AI age — save anything from the web, then access it everywhere your AI agent works. Capture any page, video, article, or tweet, and feed it straight into your AI workflow. WHAT YOU CAN SAVE • Web articles — main content extracted automatically via Readability • YouTube videos — transcript captured automatically • Twitter / X posts — tweet text and media preserved • Any page — select text first to save just that passage GET STARTED IN TWO STEPS • Twitter / X posts — tweet text and media preserved • Any page — select text first to save just that passage GET STARTED IN TWO STEPS • Twitter / X posts — tweet text and media preserved • Any page — select text first to save just that passage GET STARTED IN TWO STEPS 1. Install the extension, then click it and sign in — sum.md connects your account automatically (one time, no API keys to copy) 2. Start saving. That's it. THREE WAYS TO SAVE THE CURRENT PAGE • Press ⌘/Ctrl + Shift + S • Right-click the page and choose "Save to sum.md" • Click the toolbar icon Every save lands in your library as clean markdown — automatically given a title, a summary, and tags, then indexed for search. WHERE YOUR KNOWLEDGE GOES Saved entries are instantly available via MCP to Claude Code, Codex, Cursor, and any MCP-compatible AI agent — they search your library and pull in relevant notes as context, with no copy-paste and no context switching. You can also browse and search everything in the sum.md web app. PRIVACY The extension only transmits content when you explicitly trigger a save. No passive data collection, no browsing history tracked. Full guide: https://sum.md/docs/extension