✍️ Scribe: Google Calendar MCP Server

Scribe is a Model Context Protocol (MCP) server that allows CLI AI assistants (such as the Google Antigravity agy CLI or custom agents) to securely manage your Google Calendar schedule, events, and focus time using natural language.

🔌 Exposed MCP Tools

Once loaded by an AI client, Scribe registers the following tools:

• list_events: View upcoming meetings and appointments.

• create_event: Schedule new events (supports summaries, descriptions, date-times, locations, and returns Smart Conflict Warnings if slots overlap).

• reschedule_event: Change the time range of an existing event ID (also returns Smart Conflict Warnings for overlaps).

• delete_event: Remove/cancel an event.

• search_events: Find appointments matching a free-text search query.

• find_free_slots: Scan a specific date and return a list of available open time slots.

• quick_add: Schedule events instantly using natural language parsing (e.g. "Lunch at 12pm tomorrow").

Related MCP server: Google Calendar MCP Server

🛠️ Step-by-Step Setup

Step 1: Install Python Dependencies

Set up your python environment and install the required modules:

pip install -r requirements.txt

Step 2: Configure Google Cloud OAuth Client

Because Google Calendar requires secure authentication, you must configure a private Desktop OAuth Client in the Google Cloud Console:

1. Open the Google Cloud Console.

2. Create a new project (e.g. Scribe-Calendar).

3. Search for Google Calendar API in the library search bar and click Enable.

4. Go to the OAuth Consent Screen panel on the left sidebar:

   • Select External user type and click Create.

   • Enter your email under support and developer contacts.

   • Under Test Users, click Add Users and add your own Google email address (so your private app can authenticate).

5. Go to the Credentials panel on the left sidebar:

   • Click Create Credentials -> OAuth Client ID.

   • Select Desktop App as the Application Type.

   • Name it (e.g. Scribe-CLI) and click Create.

6. Under the created Client ID row, click the Download icon on the far right to download the client secrets JSON.

7. Save the downloaded JSON file directly into this scribe directory under the exact name: credentials.json

Step 3: Run the Authentication Script

Execute the authentication script to login and generate your offline access token:

./auth.py

A browser window will open asking you to authorize the application. Log in with the Google Account you added as a test user in Step 2. Once authorized, Scribe will save your session details locally in token.json.

Step 4: Link Scribe to Google Antigravity CLI

To enable your Antigravity agent to read and write to your calendar, add Scribe to your CLI settings file:

1. Open the configuration file: ~/.gemini/antigravity-cli/settings.json

2. Add Scribe under the mcpServers settings block:

   {
     "mcpServers": {
       "scribe": {
         "command": "python3",
         "args": ["/home/keen/Desktop/Projects and Codes/scribe/scribe_server.py"]
       }
     }
   }

🚀 Usage Examples

Start the Antigravity TUI or prompt agy directly:

• "Do I have any meetings tomorrow?"

• "Add a meeting with Sarah tomorrow at 10am for 1 hour about project launch"

• "Reschedule my focus time tomorrow afternoon to 3pm"

• "Cancel the lunch appointment on Friday"

📅 Timetable Importer (add_schedule.py)

Scribe includes a utility script to bulk import recurring university classes or recurring weekly schedules:

• Usage: Run the script locally once you are authenticated:

  ./add_schedule.py

• Configuration: You can edit the classes list in add_schedule.py to change titles, days of the week, times, rooms, or instructors.

• Semester Boundaries: Currently pre-configured to populate your 3rd Year 1st Semester from June 29th, 2026 to November 7th, 2026 with weekly recurrence rules.