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Knowledge RAG

Knowledge RAG is an MCP server that adds search and knowledge tools to AI assistants such as Claude Desktop, Claude Code and Cursor. Local RAG MCP server for Claude Code — hybrid search (semantic + BM25), cross-encoder reranking, 13 MCP tools… It has 300 GitHub stars, is released under the MIT license and runs locally with uvx knowledge-rag.

github.com/lyonzin/knowledge-rag (opens in a new tab)

Data as of from the GitHub API; description from the project's repository. Report an error

View on GitHub (opens in a new tab)

Install Knowledge RAG

Generated from the server's published package. Replace your-value with your own values.

Claude Desktop

claude_desktop_config.json
{
  "mcpServers": {
    "knowledge-rag": {
      "command": "uvx",
      "args": [
        "knowledge-rag"
      ]
    }
  }
}

Settings > Developer > Edit Config. macOS: ~/Library/Application Support/Claude/, Windows: %APPDATA%\Claude\. Restart Claude Desktop afterwards.

Claude Code

claude mcp add --transport stdio knowledge-rag -- uvx knowledge-rag

Cursor

.cursor/mcp.json
{
  "mcpServers": {
    "knowledge-rag": {
      "type": "stdio",
      "command": "uvx",
      "args": [
        "knowledge-rag"
      ]
    }
  }
}

Project file; use ~/.cursor/mcp.json to enable it in every project.

VS Code

.vscode/mcp.json
{
  "servers": {
    "knowledge-rag": {
      "type": "stdio",
      "command": "uvx",
      "args": [
        "knowledge-rag"
      ]
    }
  }
}

Config formats checked against the official docs on Oct 7, 2026: modelcontextprotocol.io (opens in a new tab), code.claude.com (opens in a new tab), cursor.com (opens in a new tab), code.visualstudio.com (opens in a new tab).

About Knowledge RAG

Hybrid search · Cross-encoder reranking · 35 file formats · 100% local · Zero cloud · Enterprise-grade plumbing built-in.

  • claude
  • claude-code
  • local-ai
  • mcp
  • rag
  • retrieval-augmented-generation
  • semantic-search
  • vector-database
  • knowledge-base
  • reranking

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FAQ

Knowledge RAG FAQ

Still curious? Email info@appsgit.com.

How do I install the Knowledge RAG MCP server?

Add the command uvx knowledge-rag to your MCP client: put it in claude_desktop_config.json for Claude Desktop, run claude mcp add for Claude Code, or add it to .cursor/mcp.json (Cursor) or .vscode/mcp.json (VS Code). The snippets on this page are ready to paste.

Is Knowledge RAG free?

The server is open source under the MIT license, so running it is free. It does not declare any required API key.

Is Knowledge RAG actively maintained?

The most recent commit was on Oct 25, 2026. The latest release is v4.11.1, published Oct 25, 2026. appsgit only lists MCP servers with a commit in the last six months.