Citadel vs OneDroid Engram

In-depth architectural comparison of the Citadel and OneDroid Engram MCP servers. Compare execution transports, security boundaries, tool capabilities, quality scores, and ready-to-paste client installation snippets for Claude, Cursor, Windsurf, and VS Code.

Which MCP Server Should You Choose?

Choose Citadel when:

• You need dedicated capabilities in the Databases domain.
• You prefer local stdio subprocess transport architecture.
• Your security boundary fits: No auth required (Free / Open Source).

Explore Citadel Details

O

Choose OneDroid Engram when:

• You need dedicated capabilities in the Databases domain.
• You prefer remote streaming HTTP/SSE transport architecture.
• Your security boundary fits: No auth required (Free / Open Source).

Explore OneDroid Engram Details

Feature & Specification Comparison

Specification	Citadel Databases	O OneDroid Engram Databases
Summary	Encrypted-first embedded database with vector search and agent memory, exposed as MCP tools	Versioned agent memory in your own Postgres: portable context, permissioned, audit trail.
Category & Scope	Databases	Databases
Quality signal

Tools & Capabilities Breakdown

Ready-to-Paste Client Configurations

Paste either (or both) of these JSON server blocks into your client config file (e.g. claude_desktop_config.json or ~/.cursor/mcp.json).

{
  "mcpServers": {
    "citadel": {
      "command": "uvx",
      "args": [
        "citadeldb-mcp"
      ]
    }
  }
}

{
  "mcpServers": {
    "onedroid-engram": {
      "url": "https://onedroid.ai/engram"
    }
  }
}

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