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mcp/harbor
Grok

Citadel for Grok

dev.citadeldb/mcp

Encrypted-first embedded database with vector search and agent memory, exposed as MCP tools

client:Grok transport:stdio runtime:pypi

Install Citadel in Grok

.mcp.json (in your project root)

Held in this page only — never stored, logged, or sent anywhere but back to your screen. 

{
  "mcpServers": {
    "mcp": {
      "type": "stdio",
      "command": "uvx",
      "args": [
        "citadeldb-mcp"
      ],
      "env": {
        "CITADEL_KEY": "<CITADEL_KEY>"
      }
    }
  }
}

Grok Build reads Claude Code's .mcp.json and Claude Desktop's config unchanged, so a server you have already set up there needs nothing new. The Grok web app and X integration do not take custom servers. Grok docs

Citadel in other clients

Citadel MCP server