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Google Calendar ACTION

Add Attendees To Event

Add one or more attendees (invitees) to an event that ALREADY EXISTS on a Google Calendar, without recreating it. New attendees are merged into the event's current attendee list — existing attendees are preserved, not replaced. Use this when the user wants to invite additional people to an event they already have; identify the target event with eventId first (e.g. via list-events or get-event). When creating a brand-new event, set its attendees directly in create-event instead of calling this afterward. See the documentation
  • Action
  • Writes data
  • Destructive
  • OAuth
  • SDK
  • MCP

IMPLEMENTATION

Call this tool

Connect a user's Google Calendar account once, then configure and run Add Attendees To Event from your backend or agent.

import { PipedreamClient } from "@pipedream/sdk"

const pd = new PipedreamClient({
  projectId: process.env.PIPEDREAM_PROJECT_ID!,
  clientId: process.env.PIPEDREAM_CLIENT_ID!,
  clientSecret: process.env.PIPEDREAM_CLIENT_SECRET!,
  projectEnvironment: "production",
})

const result = await pd.actions.run({
  id: "google_calendar-add-attendees-to-event",
  externalUserId: "{external_user_id}", // any stable ID for this user in your system
  configuredProps: {
    google_calendar: { authProvisionId: "apn_xxxxxxx" },
    calendarId: "Calendar",
    eventId: "Event",
  },
})

console.log(result)

SCHEMA

Inputs

Pipedream supplies the connected account. Your application provides the operation-specific values below. Dynamic inputs are resolved against that user's account.

Add Attendees To Event inputs
Property Type Description
calendarId Calendar string
Optionally select the calendar, defaults to the primary calendar for the logged-in user
Optional Dynamic
eventId Event string
Select an event from Google Calendar.
Required Dynamic
attendees Attendees string
Enter either an array or a comma separated list of email addresses of attendees
Required
sendUpdates Send Updates string
Configure whether to send notifications about the event
Optional

REFERENCE

Tool details

Behavior hints are published with the component in the Pipedream registry and surface as MCP tool annotations, so an agent can reason about a tool before it calls it.

Registry key
google_calendar-add-attendees-to-event
Version
0.0.11
App
Google Calendar
Authentication
OAuth
Read-only
No
Destructive
Yes
Open world
Yes