WYSIWYG markdown that lets AI agents edit alongside you

What it does OpenKnowledge renders markdown as a true WYSIWYG surface—think Google Docs, not a split-pane preview—while keeping files local and syncable via git under the hood. It targets personal notes, engineering specs, and what the authors call “LLM wikis”: knowledge bases meant to be read and edited by both humans and language models. A desktop app and web UI are available, with a built-in TUI for terminal devotees.

The interesting bit The project treats AI agents as first-class collaborators rather than bolt-on chatbots. It ships with out-of-the-box MCP support, “skills,” and agentic search, meaning Claude, Codex, Cursor, and other harnesses can edit documents directly through a standardized interface. That turns a static notes app into something closer to a shared workspace where the other user might be a script.

Key highlights

• True WYSIWYG editing for markdown files, with embeddable HTML and rich components for specs and reports.
• Native AI-editing integrations for Claude, Codex, and Cursor, plus generic MCP/CLI hooks for other agents.
• Agentic search and skills framework aimed at LLM wikis and knowledge graphs.
• No-code team sharing with auto-sync powered by git and GitHub (not a proprietary backend).
• Desktop app for macOS, web UI for Linux/Windows, and a built-in TUI for terminal fans.

Caveats

• Public pull requests are mirrored into an internal monorepo for review, so the open-source workflow has an extra hop.
• The web and CLI path requires Node.js 24+, a notably recent runtime floor.
• Licensed under GPL-3.0-or-later, which may matter if you are building proprietary derivative tools.

Verdict Worth a look if you want a Notion-like writing experience but need your notes to stay in plain markdown that AI agents can manipulate programmatically. Skip it if you are after a simple, disconnected text editor without agent harnesses or git plumbing.