Citadel

{
  "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
  "name": "dev.citadeldb/mcp",
  "description": "Encrypted-first embedded database with vector search and agent memory, exposed as MCP tools",
  "title": "Citadel",
  "repository": {
    "url": "https://github.com/yp3y5akh0v/citadel",
    "source": "github",
    "subfolder": "crates/citadel-mcp"
  },
  "version": "2.7.0",
  "websiteUrl": "https://citadeldb.dev",
  "packages": [
    {
      "registryType": "pypi",
      "registryBaseUrl": "https://pypi.org",
      "identifier": "citadeldb-mcp",
      "version": "2.7.0",
      "runtimeHint": "uvx",
      "transport": {
        "type": "stdio"
      },
      "packageArguments": [
        {
          "description": "Path to the Citadel database/region file",
          "isRequired": true,
          "format": "filepath",
          "type": "named",
          "name": "--db"
        },
        {
          "description": "Embedder name; use e5-large after running citadeldb-mcp pull e5-large",
          "isRequired": true,
          "type": "named",
          "name": "--embedder"
        }
      ],
      "environmentVariables": [
        {
          "description": "Passphrase used to unlock the encrypted Citadel database",
          "isRequired": true,
          "isSecret": true,
          "name": "CITADEL_KEY"
        }
      ]
    }
  ]
}