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3. Google Calendar credential in Volt: **Settings → Integrations → Add Credential → Google
Calendar**, paste your OAuth values, and copy the returned `cred_xxx`.
4. (Recommended) Environment variables:
```bash
GOOGLE_CALENDAR_CREDENTIAL_ID=cred_xxx
```
## Available actions
- `calendar.createEvent` – create an event with attendees, reminders, locations, and time zones.
- `calendar.updateEvent` – patch an event’s summary, times, attendees, description, status, or
location.
- `calendar.deleteEvent` – remove an event by `eventId`.
- `calendar.listEvents` – list events for a calendar with time windows, pagination, ordering, and
query.
- `calendar.getEvent` – fetch a specific event by `eventId`.
## Running Google Calendar actions from code
```ts
import { VoltOpsClient } from "@voltagent/core";
const voltops = new VoltOpsClient({
publicKey: process.env.VOLTAGENT_PUBLIC_KEY!,
secretKey: process.env.VOLTAGENT_SECRET_KEY!,
});
// Create an event on the primary calendar
await voltops.actions.googlecalendar.createEvent({
credential: { credentialId: process.env.GOOGLE_CALENDAR_CREDENTIAL_ID! },
calendarId: "primary",
summary: "Team sync",
description: "Weekly sync-up with the team",
location: "Video",
start: {
dateTime: new Date(Date.now() + 60 * 60 * 1000).toISOString(),
timeZone: "UTC",
},
end: {
dateTime: new Date(Date.now() + 2 * 60 * 60 * 1000).toISOString(),
timeZone: "UTC",
},
attendees: [{ email: "teammate@example.com" }],
});
// Update an existing event
await voltops.actions.googlecalendar.updateEvent({
credential: { credentialId: process.env.GOOGLE_CALENDAR_CREDENTIAL_ID! },
calendarId: "primary",
eventId: "event_123",
summary: "Updated team sync",
description: "Add roadmap review",
});
// List upcoming events
const events = await voltops.actions.googlecalendar.listEvents({
credential: { credentialId: process.env.GOOGLE_CALENDAR_CREDENTIAL_ID! },
calendarId: "primary",
timeMin: new Date().toISOString(),
timeMax: new Date(Date.now() + 7 * 24 * 60 * 60 * 1000).toISOString(),
singleEvents: true,
orderBy: "startTime",
maxResults: 10,
});
// Fetch a specific event
await voltops.actions.googlecalendar.getEvent({
credential: { credentialId: process.env.GOOGLE_CALENDAR_CREDENTIAL_ID! },
calendarId: "primary",
eventId: "event_123",
});
```
## Treat Calendar actions as tools
```ts
import { Agent, createTool, VoltOpsClient } from "@voltagent/core";
import { openai } from "@ai-sdk/openai";
import { z } from "zod";
const voltops = new VoltOpsClient({
publicKey: process.env.VOLTAGENT_PUBLIC_KEY!,
secretKey: process.env.VOLTAGENT_SECRET_KEY!,
});
export const scheduleMeetingTool = createTool({
name: "scheduleMeeting",
description: "Create a meeting on the primary Google Calendar.",
parameters: z.object({
summary: z.string(),
description: z.string().optional(),
start: z.string().describe("ISO date string"),
end: z.string().describe("ISO date string"),
attendees: z.array(z.string().email()).optional(),
timeZone: z.string().optional(),
}),
execute: async ({ summary, description, start, end, attendees, timeZone }) => {
return await voltops.actions.googlecalendar.createEvent({
credential: { credentialId: process.env.GOOGLE_CALENDAR_CREDENTIAL_ID! },