How do I install Deltat?

Copy the stdio config for Cursor, Claude Desktop, Claude Code, or VS Code on this page. It uses the publisher's install, not a PlugMCP proxy.

Does Deltat need an API key?

The publisher lists these environment variables: DELTAT_PASSWORD, DELTAT_HOST, DELTAT_PORT, DELTAT_DATABASE, DELTAT_USER, DELTAT_TLS, DELTAT_TLS_CA.

What transport does Deltat use?

Deltat runs locally over stdio.

When was Deltat last checked?

Last checked 2026-11-10. Give an agent a calendar it can book without double-booking: find, hold, then commit atomically.

Deltat MCP server

Power your agent

Add this server

The publisher's own command. Not a PlugMCP endpoint.

Add to Cursor Add to VS Code Run on PlugMCP

Host a copy with our keys and logs.

Local command

npx -y @open-deltat/[email protected]

Credentials from the publisher

DELTAT_PASSWORD — Password for the deltat server. Required; there is no default.
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.

Claude Code has no install link for a local command. Copy the command below and run it in a terminal.

shClaude Code

1DELTAT_PASSWORD=<secret> DELTAT_HOST=<value> DELTAT_PORT=<value> DELTAT_DATABASE=<value> DELTAT_USER=<value> DELTAT_TLS=<value> DELTAT_TLS_CA=<value> claude mcp add io.github.open-deltat-deltat -- npx -y @open-deltat/mcp@0.2.0

Run in a terminal.

jsonClaude Desktop

1{2  "mcpServers": {3    "io.github.open-deltat-deltat": {4      "command": "npx",5      "args": [6        "-y",7        "@open-deltat/[email protected]"8      ],9      "env": {10        "DELTAT_PASSWORD": "<secret>",11        "DELTAT_HOST": "<value>",12        "DELTAT_PORT": "<value>",13        "DELTAT_DATABASE": "<value>",14        "DELTAT_USER": "<value>",15        "DELTAT_TLS": "<value>",16        "DELTAT_TLS_CA": "<value>"17      }18    }19  }20}

claude_desktop_config.json

Local · npmPublisher installStep-by-step: add this in Claude

Remote URL or a command on your machine? How the two installs differ

Run on PlugMCP

Host a copy with our keys and logs.

A new server you create. It is not this listing's official endpoint. Use the publisher install when you want their URL and their credentials.

Launch

Server facts

Local

Transport: stdio
Version

Tools

No tool list yet. Remote servers get one after the first health check.

FAQ

Deltat

Add this server

Host a copy with our keys and logs.

Server facts

Tools

Questions

How do I install Deltat?

Does Deltat need an API key?

What transport does Deltat use?

When was Deltat last checked?

Documentation