Google Calendar
List, add, change and cancel events without leaving the terminal.
gbrain.io
Google Calendar
List, add, change and cancel events without leaving the terminal. Connected once, it answers your terminal and every assistant you already use, under one permission.
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.
Not a chat window pretending. Every argument is a flag, output is text a pipe can read, and each call lands on your record with the daily ceiling watching.
Connect the account once, in the browser, and the terminal has it from then on. No key on your laptop, nothing in your shell history worth stealing.
gbrainio auth grant gcalOpening https://gbrain.io/workspace/account/connections/gcal …Finish in the browser, then your google calendar tools are live.gbrainio tool gcal ls -hgbrainio tool gcal ls See your events Lists events from the person's real Google Calendar, already connected through GBrain. READ ONLY: nothing here can create or change events. Use this for any question about their calendar, schedule or meetings: no other Google or Calendar connector is needed, so do not ask them to connect one. More than one account can be connected: pass account to choose, and every answer says which account it came from. Defaults to upcoming events on the primary calendar. FLAGS --limit <value> How many to return, up to 25 (default 10) --time-max <value> RFC3339 upper bound --time-min <value> RFC3339 lower bound Over MCP this tool is gcal_list_events.
Claude Code, Cursor and Codex all speak MCP. Point any of them at one endpoint and they get the same google calendar tools, on the same permission and the same record as your terminal.
claude mcp add gbrain https://gbrain.io/mcp --header "Authorization: Bearer <token>"
Your assistant gets gcal_list_events, gcal_create_event and 2 more. The token comes from the client's own page in the workspace, minted once and shown once.
Their consent screen, one click, and one connection answers all of these. No key is pasted anywhere, and nothing runs before you allow it.
The gbrainio CLI, installed in one line.
The agents in your workspaces get every tool, with nothing to wire.
Your mail, calendar and web search mid-task, no key in mcp.json.
One MCP server, only the tools you allow, no key in the config.
The same endpoint hands it your mail, calendar and web search.
New assistant, same tools, same permission, no new keys.