How to connect Google Calendar to Claude Code

1. 1. Enable Google Calendar in Metorial

   In your Metorial portal, enable the Google Calendar MCP server and sign in with the account that owns the data. Access stays governed by your team policies.

2. 2. Add the server over HTTP

   Add --scope user to use it in every project.

   Copy

   claude mcp add --transport http metorial <your-magic-mcp-url>

3. 3. Sign in

   Run /mcp, select Metorial and sign in to load Google Calendar tools.

• Get Event: Retrieve the full details of a specific event by its ID, including attendees, recurrence, conference data, and all metadata.
• Manage Calendar: Create, update, or delete a secondary calendar.
• Delete Event: Permanently delete an event from a Google Calendar.
• Update Event: Update an existing Google Calendar event.
• Get Colors: Retrieve the available calendar and event color definitions used in Google Calendar.
• Find Free/Busy: Query the free/busy availability for one or more calendars over a given time range.
• List Events: List events from a Google Calendar with flexible filtering options.
• List Calendars: List all calendars on the user's calendar list, including their primary calendar, subscribed calendars, and shared calendars.
• Manage Sharing: Manage access control (sharing permissions) on a calendar.
• Create Event: Create a new event on a Google Calendar.
• Quick Add Event: Create an event using natural language text, just like the "Quick Add" feature in the Google Calendar UI.
• Respond to Event: Accept, decline, or tentatively accept a Google Calendar invitation without replacing the event's attendee list.
• Get Settings: Retrieve one Google Calendar user setting or list the settings explicitly stored for the authenticated user.
• Batch Modify Events: Create, update, or delete multiple Google Calendar events in one tool call.
• List Calendar Sharing: List the sharing rules for a Google Calendar, including each rule's access role and user, group, domain, or public scope.
• And 1 more on the Google Calendar MCP server page.

• Google Calendar tools appear as mcp__metorial__<tool>. Use that name in permission rules to allow or deny a tool.
• Run /mcp to see whether Metorial is connected and to sign in again.
• Claude Code warns when a tool result passes 10,000 tokens and caps it at 25,000 by default. Raise the cap with MAX_MCP_OUTPUT_TOKENS.
• Pre-approve trusted Google Calendar tools with allow rules in your settings so Claude Code stops asking each time.

claude mcp list shows "Needs authentication"

Run /mcp, select Metorial, and sign in. If sign-in keeps failing, choose Clear authentication in the same menu and sign in again.

A teammate sees "Pending approval"

Servers shared through a project .mcp.json need approval. Run claude in the project and approve Metorial when asked.

Large tool results are cut off

Claude Code limits MCP tool output to 25,000 tokens by default. Raise it with the MAX_MCP_OUTPUT_TOKENS environment variable.

Based on the Claude Code MCP documentation.