Mjucius Cozi MCP server

What it does

An MCP server that connects to Cozi Family Organizer, letting AI assistants read and update family calendars, lists, and related data. Each user runs their own instance against their own Cozi account, with credentials stored securely in the MCP client.

• View and create calendar appointments for family members in Cozi
• Read and update shopping lists, to-do lists, and other shared family lists
• Query family member information and calendar events to help with scheduling or planning tasks

Tools this server exposes

Tool	Does
family_members	Get information about family members in the Cozi account.
get_lists	Retrieve all lists in the Cozi account.
get_list_items	Get items from a specific list in Cozi.
get_calendar	Retrieve calendar events from Cozi.
create_list_item	Add a new item to a Cozi list (write mode only).
update_list_item	Modify an existing list item in Cozi (write mode only).
delete_list_item	Remove an item from a Cozi list (write mode only).
create_calendar_event	Add a new event to the Cozi calendar (write mode only).
update_calendar_event	Modify an existing calendar event in Cozi (write mode only).
delete_calendar_event	Remove an event from the Cozi calendar (write mode only).

Before you enable it

An MCP server runs with whatever access you give it. Start with a development account rather than production, and check which tools the server exposes before you let an agent call them unattended.