r3 MCP Server

by n3wthio.github.n3wth/r3v1.3.2

Local Redis memory MCP for AI apps with hybrid caching and optional Mem0 cloud backup.

2Node.jsstdioofficial registry

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Active13d ago

Install r3 MCP server

claude mcp add r3 -e MEM0_API_KEY='<mem0-api-key>' -- npx -y @n3wth/r3

{
  "mcpServers": {
    "r3": {
      "command": "npx",
      "args": [
        "-y",
        "@n3wth/r3"
      ],
      "env": {
        "MEM0_API_KEY": "<mem0-api-key>"
      }
    }
  }
}

Add to ~/.cursor/mcp.json (global) or .cursor/mcp.json (project).

{
  "mcpServers": {
    "r3": {
      "command": "npx",
      "args": [
        "-y",
        "@n3wth/r3"
      ],
      "env": {
        "MEM0_API_KEY": "<mem0-api-key>"
      }
    }
  }
}

Settings → Developer → Edit Config (claude_desktop_config.json), then restart.

{
  "servers": {
    "r3": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@n3wth/r3"
      ],
      "env": {
        "MEM0_API_KEY": "<mem0-api-key>"
      }
    }
  }
}

Add to .vscode/mcp.json in your workspace.

{
  "mcpServers": {
    "r3": {
      "command": "npx",
      "args": [
        "-y",
        "@n3wth/r3"
      ],
      "env": {
        "MEM0_API_KEY": "<mem0-api-key>"
      }
    }
  }
}

Add to ~/.codeium/windsurf/mcp_config.json.

Configuration

Variable	Required	Secret	Description
MEM0_API_KEY	—	yes	Optional Mem0 API key for cloud backup (get free at mem0.ai).
REDIS_URL	—	—	Redis connection URL. Uses embedded Redis if unset.

Freshness

Active — last maintenance signal 13d ago. The newest of the signals below sets the band.

Last commit (default branch)
2026-09-27 · 13d ago · GitHub
Latest release
2026-09-01 · 38d ago · GitHub · v1.3.2
Package published
no data · npm/PyPI
Registry entry updated
2026-09-09 · 31d ago · official registry · v1.3.2

FAQ

›How do I install the r3 MCP server in Claude Code?

Run: claude mcp add r3 -e MEM0_API_KEY='<mem0-api-key>' -- npx -y @n3wth/r3. For Cursor, VS Code, Claude Desktop and Windsurf, use the install tabs above.

›Does r3 require an API key?

Yes. It expects MEM0_API_KEY, of which 1 is a secret.

›Can I use r3 as a remote (hosted) MCP server?

No hosted endpoint is published; it runs locally over stdio.

›Is r3 in the official MCP registry?

Yes, as io.github.n3wth/r3.