Connect Google Calendar to AI agents over MCP (with Stepper Skill Sets)

What you can let an agent do in Google Calendar

These are the Google Calendar actions you can add to a Skill Set. They're the same actions Stepper workflows use, listed on Stepper's Google Calendar page. You choose which ones the agent gets.

For example, you could ask

• What's on my calendar next Tuesday afternoon?
• Book a 30-minute call with [email protected] on Thursday at 2pm and add Priya as an attendee.

• Create Detailed Event Create an event by defining each field.
• Create Calendar Creates a new calendar.
• Quick Add Event Create an event from a piece of text. Google parses the text for date, time, and description info.
• Update Event Updates an event. Only filled fields are updated.
• Delete Event Deletes an event.
• Add Attendee(s) to Event Invites one or more person to an existing event.
• Retrieve Event by ID Finds a specific event by its ID in your calendar.
• Find Event Finds an event in your calendar.
• Find Multiple Events Finds multiple events in your calendar as line items.

Set it up in 5 steps

You need a Stepper account, a Google Calendar account, and an AI client that supports remote MCP servers, such as ChatGPT, Claude, Cursor or VS Code. Your own agent works too, using a Skill Set token.

1. Connect Google Calendar to Stepper

   In Stepper, connect your Google Calendar account. Use an account that can do what you want the agent to do, and no more.

2. Create a Skill Set

   Go to Skill Sets in Stepper, create a Skill Set for this agent, and use Add Entry to add your Google Calendar connection.

3. Restrict the actions

   Choose only the Google Calendar actions the agent needs. An entry with no actions chosen allows every Google Calendar action, so a short list is safer. To pin a value, such as one channel, table or calendar, hardcode that parameter so the agent can't change it.

4. Add the Skill Sets server to your AI client

   Add this URL as a remote MCP server:

   https://mcp.stepper.io/skill-sets/mcp Copy

   Then sign in to Stepper when your client asks. On the Stepper screen that follows, pick the Skill Set this agent should use. To switch to a different Skill Set later, remove the server and connect again.

   Chat apps (ChatGPT, Claude and others): add it as a custom connector or app, wherever your client lists remote MCP servers.

   Code editors (Cursor, Windsurf and others that use an mcpServers config):

   {
     "mcpServers": {
       "stepper": {
         "url": "https://mcp.stepper.io/skill-sets/mcp"
       }
     }
   }

   Your own agent or script: generate a Skill Set token in Stepper and send it as Authorization: Bearer sst_….

5. Test it

   Ask the agent what it can do (it checks the Skill Set's list of skills) and make sure only the Google Calendar actions you chose appear. Then run one request using the lowest-risk action you allowed, such as a lookup or a draft, and check the call in the Skill Set's call log in Stepper.

Google Calendar's own MCP server, and when to use it instead

Guardrails

An agent can misread a request, and some Google Calendar actions change or remove real data. Set these up before you rely on it.

Add with care: Delete Event.