OpenKnowledge: Local-First Markdown Editor and LLM Wiki for Claude and Cursor

The LLM wiki pattern went from Andrej Karpathy's gist to Google's Open Knowledge Format in weeks. The missing piece for most teams was not the schema — it was a product: a editor that feels like Notion, stays local-first, and wires Claude Code, Codex, and Cursor without duct tape.

OpenKnowledge — from Inkeep, recently rebranded from "Open Knowledge" to OpenKnowledge — is that product. Open-sourced under GPL-3.0-or-later, at v0.18.0 with ~444 GitHub stars, it combines a WYSIWYG markdown editor, an LLM wiki with MCP and skills, and no-code GitHub team sync.

TL;DR

What OpenKnowledge Actually Is

OpenKnowledge is two things merged into one workflow:

1. A beautiful markdown editor — full WYSIWYG so editing .md files feels like Google Docs or Notion, not raw source mode.
2. An LLM wiki — structured knowledge your agents can search, edit, and maintain — with MCP, skills, and agentic search out of the box.

Inkeep's positioning: "Beautiful, AI-native markdown editor and LLM Wiki." That maps directly onto the three-layer pattern from Karpathy's gist: raw sources live in your repo, the wiki layer is agent-maintained markdown, and OpenKnowledge supplies the editor + harness integration that plain folders lack.

Key features

Recent repo activity (June 2026): interactive editor in the marketing hero, VS Code-style file-tree sidebar density, task-list checkbox fixes after editor transitions, and a rebrand pass from "Open Knowledge" to OpenKnowledge across docs and AGENTS.md.

Install

macOS (native app)

1. Download the latest release from GitHub Releases (v0.18.0)
2. Open the DMG, drag OpenKnowledge to Applications
3. Launch from Applications

This is the recommended path for Apple Silicon Macs.

Linux, Windows, Intel Mac (CLI web app)

Requires Node.js 24+:

npm install -g @inkeep/open-knowledge
cd your-project
ok init          # scaffold project + wire Claude Code, Cursor, Codex
ok start --open  # serve web editor and open browser

ok init is the onboarding step that matters for agent users — it scaffolds the project structure and connects your harnesses so the wiki is not a dead folder of markdown.

OpenKnowledge vs Plain Markdown + Git

Compared to files.md — another local-first markdown philosophy — OpenKnowledge targets teams + agents rather than solo minimalism. Files.md rejects the "second brain" complexity; OpenKnowledge embraces agent-maintained wikis as the product.

Compared to Notion + Cursor integration — OpenKnowledge keeps data on your machine / your GitHub, not Notion's cloud, at the cost of self-hosting or running the CLI locally.

Where It Sits in the LLM Wiki Stack

Karpathy LLM Wiki gist (pattern)
        ↓
Google OKF v0.1 (interoperable spec)
        ↓
OpenKnowledge (editor + wiki product + agent wiring)
        ↓
Your agents (Claude Code, Cursor, Codex, custom MCP)

If you are building an agent second brain or spec-driven development wiki:

• Start with Karpathy's pattern for ingest/query/lint semantics
• Add OKF conventions if you need cross-team bundles
• Run OpenKnowledge as the editor and sync layer your humans and agents share

For MCP fundamentals, see our Model Context Protocol guide.

Contributing and License

OpenKnowledge is GPL-3.0-or-later. Public PRs on GitHub are mirrored into Inkeep's internal monorepo for review and merge — automation via inkeep-oss-sync[bot]. Contributors must pass the CLA bridge gate documented in CLA.md.

This is a product company open-sourcing its editor stack, not a community-only repo — expect fast iteration (176 releases) with external contributions flowing through their mirror workflow.

Who Should Use OpenKnowledge

Good fit:

• Teams running Claude Code or Cursor who want a shared wiki agents can read and write
• Product/engineering groups doing spec-driven development in markdown
• Anyone who wants Notion-like editing without Notion's cloud
• macOS users wanting a native desktop app for LLM wikis

Less ideal:

• GPL-averse organizations (copyleft applies to derivatives)
• Users who want zero local setup — the CLI path requires Node 24+
• Solo note-takers who prefer minimal tools like files.md or plain Obsidian

Related explainx.ai coverage

Summary

OpenKnowledge v0.18.0 is Inkeep's open-source bet that LLM wikis need a real editor, not just a folder and a gist. WYSIWYG markdown, MCP and skills, agentic search, and one-command wiring for Claude Code, Cursor, and Codex — plus a macOS app and ok start for everyone else.

If Karpathy's wiki pattern gave agents a memory model, OpenKnowledge gives humans and agents a shared surface to maintain it.

Last updated: June 26, 2026. Version and features from github.com/inkeep/open-knowledge and openknowledge.ai/docs.