Inkeep Open-Sources OpenKnowledge, a Local-First Markdown Editor That Wires Claude Code, Codex and Cursor Into Your Files

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Inkeep launched OpenKnowledge on Show HN (June 27, 2026), a free open-source WYSIWYG markdown editor that integrates Claude Code, OpenAI Codex, and Cursor directly into the app via built-in MCP, letting agents read and rewrite local files with no cloud round-trip. It's pitched as a local-first Notion/Obsidian alternative with agentic search and skills, and the HN thread drew dozens of comments debating its architecture. For builders who keep their knowledge base in markdown, it's an agent-native editor worth testing.