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deltat MCP Server

API key required

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

To add deltat to Claude, run the install command below or copy the ready-made config for Claude Code, Claude Desktop, Cursor and VS Code further down. Restart your client after adding it and its tools show up in your next conversation. It needs 7 environment variables, listed below.

DevToolsProductivity

Install

npx -y @open-deltat/mcp@0.2.0

Environment variables

DELTAT_PASSWORDSet in your MCP config
DELTAT_HOSTSet in your MCP config
DELTAT_PORTSet in your MCP config
DELTAT_DATABASESet in your MCP config
DELTAT_USERSet in your MCP config
DELTAT_TLSSet in your MCP config
DELTAT_TLS_CASet in your MCP config

Install with your client

Terminal
claude mcp add deltat --env DELTAT_PASSWORD=<YOUR_DELTAT_PASSWORD> --env DELTAT_HOST=<YOUR_DELTAT_HOST> --env DELTAT_PORT=<YOUR_DELTAT_PORT> --env DELTAT_DATABASE=<YOUR_DELTAT_DATABASE> --env DELTAT_USER=<YOUR_DELTAT_USER> --env DELTAT_TLS=<YOUR_DELTAT_TLS> --env DELTAT_TLS_CA=<YOUR_DELTAT_TLS_CA> -- npx -y @open-deltat/mcp@0.2.0

Run this in a terminal to add the server to Claude Code.

What this does

deltat exposes a set of tools to Claude over the Model Context Protocol. After you add it to claude_desktop_config.json (snippet above) and restart Claude Desktop, those tools become callable inside any conversation.

Requirements

This server needs the following environment variables to be set before it can run:

DELTAT_PASSWORD
DELTAT_HOST
DELTAT_PORT
DELTAT_DATABASE
DELTAT_USER
DELTAT_TLS
DELTAT_TLS_CA

Set these via the env object in your MCP config (see claude_desktop_config.json snippet above).

Frequently asked questions

How do I install deltat?

Run the Claude Code command in the install section to add deltat to Claude Code, or copy the ready-made config for your client from the install section on this page. Restart your client afterwards and the tools appear in your next conversation.

Which clients work with deltat?

This page carries setup and config for Claude Code, Claude Desktop, Cursor and VS Code. Any other MCP client that accepts a standard server config can connect to deltat as well.

Does deltat need an API key?

Yes. Before it can run, set these environment variables: DELTAT_PASSWORD, DELTAT_HOST, DELTAT_PORT, DELTAT_DATABASE, DELTAT_USER, DELTAT_TLS, DELTAT_TLS_CA. They go in the env block of your MCP config.

Imported from the Official MCP Registry. The details above come from the registry entry; the maker can claim this listing to correct them, add docs, and see its traffic.

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Listed on clauderules.net

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