Deltat MCP Server

Connect this server

This server runs on your own machine — install it with the package manager and the client starts it for you. Package name taken from the official registry entry.

claude mcp add deltat -e 'DELTAT_PASSWORD=<DELTAT_PASSWORD>' -- npx -y @open-deltat/mcp

{
  "mcpServers": {
    "deltat": {
      "command": "npx",
      "args": [
        "-y",
        "@open-deltat/mcp"
      ],
      "env": {
        "DELTAT_PASSWORD": "<DELTAT_PASSWORD>"
      }
    }
  }
}

[mcp_servers.deltat]
command = "npx"
args = ["-y", "@open-deltat/mcp"]
env = { DELTAT_PASSWORD = "<DELTAT_PASSWORD>" }

{
  "mcpServers": {
    "deltat": {
      "command": "npx",
      "args": [
        "-y",
        "@open-deltat/mcp"
      ],
      "env": {
        "DELTAT_PASSWORD": "<DELTAT_PASSWORD>"
      }
    }
  }
}

{
  "servers": {
    "deltat": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@open-deltat/mcp"
      ],
      "env": {
        "DELTAT_PASSWORD": "<DELTAT_PASSWORD>"
      }
    }
  }
}

Put your own value in place of <DELTAT_PASSWORD> (Password for the deltat server. Required; there is no default). The author’s registry entry marks it as required.

Optional settings from the registry entry, left out of the block above: DELTAT_HOST (Hostname of the deltat server), DELTAT_PORT (Port deltat listens on), DELTAT_DATABASE (Tenant to connect to. Each database name is an isolated tenant), DELTAT_USER (Username presented at connect time), DELTAT_TLS (on to encrypt the connection and verify deltat's certificate. Unset means off unless DELTAT_TLS_CA is set; without TLS the password is sent in the clear, so use it for any deltat that is not on this machine), DELTAT_TLS_CA (Path to a PEM certificate to trust instead of the system's authorities, for a deltat with a self-signed certificate. Implies DELTAT_TLS=on).