What is knowledge-rag?
knowledge-rag is a MCP server by lyonzin that offline RAG for Claude Code with hybrid BM25 and semantic search, cross-encoder reranking, Markdown-aware chunking and query expansion. It is listed under Knowledge & memory and has 297 GitHub stars.
| Type | Mcp server |
|---|---|
| Author | lyonzin |
| Repository | lyonzin/knowledge-rag |
| Popularity | 297 GitHub stars |
| Category | Knowledge & memory |
| Security | Low risk (96/100) |
| Rank | #331 of 4,418 MCP servers; #30 in Knowledge & memory |
| License | MIT |
| Last commit | 2026-10-16 |
| Stars this week | +4 |
| Runs | Locally |
| Language | Python |
| Platforms | macOS, Windows, Linux |
Is knowledge-rag safe to install?
knowledge-rag scores 96/100 on the MCPMods security check: Low risk. No checks raised a concern. It passed 5 of 6 checks.
MCP server results come from listing signals: who publishes it, where your data goes and what it can do. The code itself is not scanned yet.
| Check | Result |
|---|---|
| Community-built server | Note |
| Runs on your machine only | Pass |
| No credentials mentioned | Pass |
| Read-only by description | Pass |
| No code execution | Pass |
| Source on GitHub | Pass |
How do I install knowledge-rag?
- Find the launch command. The README says how the server starts (npx, uvx, docker or a remote URL) and which API keys it needs.
https://github.com/lyonzin/knowledge-rag
- Add it to Claude Code. Replace the part after -- with the command from the README. Remote servers use --transport http with a URL.
claude mcp add knowledge-rag -- <command from README> claude mcp add --transport http knowledge-rag <server-url>
- Check it connected. This lists your MCP servers and their status.
claude mcp list
Or ask Claude to set it up
Paste this into Claude Code and it installs knowledge-rag for you:
Add the "knowledge-rag" MCP server from https://github.com/lyonzin/knowledge-rag to Claude Code. Read its README for the launch command and any API keys I need, run claude mcp add, then check that it connects.