Citadel

MCP server · by citadeldb

Databases Python v2.7.0

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

View source ↗ Website ↗ Generate config for multiple servers More servers

Install

Pin version registry version 2.7.0

Python
uvx citadeldb-mcp

Python
uvx citadeldb-mcp@2.7.0

Setup by client

Pick your client — the config below is generated for this server (local stdio). Copy respects the “Pin version” switch above.

claude_desktop_config.json

{
  "mcpServers": {
    "mcp-841": {
      "command": "uvx",
      "args": [
        "citadeldb-mcp"
      ],
      "env": {
        "CITADEL_KEY": "<YOUR_CITADEL_KEY>"
      }
    }
  }
}

{
  "mcpServers": {
    "mcp-841": {
      "command": "uvx",
      "args": [
        "citadeldb-mcp@2.7.0"
      ],
      "env": {
        "CITADEL_KEY": "<YOUR_CITADEL_KEY>"
      }
    }
  }
}

Format verified against the official Claude Desktop docs ↗.

terminal

claude mcp add --env CITADEL_KEY=<YOUR_CITADEL_KEY> mcp-841 -- uvx citadeldb-mcp

claude mcp add --env CITADEL_KEY=<YOUR_CITADEL_KEY> mcp-841 -- uvx citadeldb-mcp@2.7.0

Format verified against the official Claude Code docs ↗.

.cursor/mcp.json

{
  "mcpServers": {
    "mcp-841": {
      "command": "uvx",
      "args": [
        "citadeldb-mcp"
      ],
      "env": {
        "CITADEL_KEY": "<YOUR_CITADEL_KEY>"
      }
    }
  }
}

{
  "mcpServers": {
    "mcp-841": {
      "command": "uvx",
      "args": [
        "citadeldb-mcp@2.7.0"
      ],
      "env": {
        "CITADEL_KEY": "<YOUR_CITADEL_KEY>"
      }
    }
  }
}

Format verified against the official Cursor docs ↗.

.vscode/mcp.json

{
  "servers": {
    "mcp-841": {
      "command": "uvx",
      "args": [
        "citadeldb-mcp"
      ],
      "env": {
        "CITADEL_KEY": "<YOUR_CITADEL_KEY>"
      }
    }
  }
}

{
  "servers": {
    "mcp-841": {
      "command": "uvx",
      "args": [
        "citadeldb-mcp@2.7.0"
      ],
      "env": {
        "CITADEL_KEY": "<YOUR_CITADEL_KEY>"
      }
    }
  }
}

Format verified against the official VS Code docs ↗.

mcp_config.json

{
  "mcpServers": {
    "mcp-841": {
      "command": "uvx",
      "args": [
        "citadeldb-mcp"
      ],
      "env": {
        "CITADEL_KEY": "<YOUR_CITADEL_KEY>"
      }
    }
  }
}

{
  "mcpServers": {
    "mcp-841": {
      "command": "uvx",
      "args": [
        "citadeldb-mcp@2.7.0"
      ],
      "env": {
        "CITADEL_KEY": "<YOUR_CITADEL_KEY>"
      }
    }
  }
}

Format verified against the official Windsurf docs ↗.

Environment variables

Defined in the server's official registry manifest. Required secrets are shown as <YOUR_…> placeholders in the configs above.

CITADEL_KEY required secret — Passphrase used to unlock the encrypted Citadel database

GitHub

⭐ 3 stars · 最近更新于 31 天前 · Apache-2.0 license

About this server

Distributed as Python, listed under Databases. Review our MCP security guide before granting access to real data.

Frequently asked questions

How do I install Citadel?

Run the install command shown above, then paste the config for your client (Claude Desktop, Claude Code, Cursor, VS Code or Windsurf) into its MCP settings and restart the client.

Is Citadel free to use?

The MCP server itself is free to install. The source is public on https://github.com/yp3y5akh0v/citadel. Any third-party service it calls may require its own API key and account.

Which clients support Citadel?

Any MCP-compatible client can use it, including Claude Desktop, Claude Code, Cursor, VS Code, Windsurf and custom agents.

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