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Google Calendar · MCP

Google Calendar in any assistant.

List, add, change and cancel events without leaving the terminal.

Calendar has two levels rather than four: read what is on it, or write to it. A client granted read can answer what a week looks like and cannot move anything in it. 

claude mcp add gbrain https://gbrain.io/mcp --header "Authorization: Bearer <token>"

One endpoint for everything on the plane, not one per service. What this client can call is decided by its permission, not by the address.

The tools it gets

Read from the tool plane, so this is what an assistant is handed today, minus anything its permission does not allow.

gcal_ls
See your events
gcal_add
Add an event
gcal_change
Change an event
gcal_rm
Remove an event

Or from a terminal

The same Google Calendar, four commands from a shell prompt, on the same permission and the same record.

Google Calendar from the command line

How the whole thing fits

One permission, one daily ceiling, one record, across every client that asks.

Tools

Also on the plane