Google Calendar MCP | OAuth Google Calendar connector for AI agents

CALL ANY TOOL

List calendars, create and update events, and retrieve event details. Same toolkit, every framework, no auth plumbing.

googlecalendar_list_calendars

List calendars

List all calendars accessible to the authorized user.

Parameters

Name

Type

Required

Description

—

No parameters required

googlecalendar_list_events

List events

googlecalendar_get_event

Get event

googlecalendar_create_event

Create event

googlecalendar_update_event

Update event

googlecalendar_delete_event

Delete event

Build your Agent

Drop the toolkit in, point it at the user, and your agent can list, create, and update Google Calendar events from the first run.

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import { ScalekitClient } from "@scalekit-sdk/node";
import { DynamicStructuredTool } from "@langchain/core/tools";
import { createReactAgent } from "@langchain/langgraph/prebuilt";
import { z } from "zod";

const sk = new ScalekitClient(envUrl, clientId, clientSecret);

const { tools } = await sk.tools.listScopedTools("user_123", {
  filter: { connectionNames: ["googlecalendar"], toolNames: ["googlecalendar_list_events", "googlecalendar_create_event", "googlecalendar_get_event"] },
  pageSize: 100,
});

const lcTools = tools.map((t) => new DynamicStructuredTool({
  name: t.tool.definition.name,
  description: t.tool.definition.description,
  schema: z.object({}).passthrough(),
  func: async (args) => {
    const { data } = await sk.tools.executeTool({
      toolName: t.tool.definition.name,
      identifier: "user_123",
      params: args,
    });
    return JSON.stringify(data);
  },
}));

const agent = createReactAgent({ llm, tools: lcTools });

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import { ScalekitClient } from "@scalekit-sdk/node";
import OpenAI from "openai";

const sk = new ScalekitClient(envUrl, clientId, clientSecret);
const openai = new OpenAI();

const { tools } = await sk.tools.listScopedTools("user_123", {
  filter: { connectionNames: ["googlecalendar"], toolNames: ["googlecalendar_list_events", "googlecalendar_create_event", "googlecalendar_get_event"] },
  pageSize: 100,
});

const llmTools = tools.map((t) => ({
  type: "function",
  function: {
    name: t.tool.definition.name,
    description: t.tool.definition.description,
    parameters: t.tool.definition.input_schema,
  },
}));

const resp = await openai.responses.create({
  model: "gpt-4o", input: prompt, tools: llmTools,
});

import { ScalekitClient } from "@scalekit-sdk/node";
import Anthropic from "@anthropic-ai/sdk";

const sk = new ScalekitClient(envUrl, clientId, clientSecret);
const anthropic = new Anthropic();

const { tools } = await sk.tools.listScopedTools("user_123", {
  filter: { connectionNames: ["googlecalendar"], toolNames: ["googlecalendar_list_events", "googlecalendar_create_event", "googlecalendar_get_event"] },
  pageSize: 100,
});

const llmTools = tools.map((t) => ({
  name: t.tool.definition.name,
  description: t.tool.definition.description,
  input_schema: t.tool.definition.input_schema,
}));

const msg = await anthropic.messages.create({
  model: "claude-sonnet-4-6", max_tokens: 1024,
  tools: llmTools,
  messages: [{ role: "user", content: prompt }],
});

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import { Agent } from "@google/adk/agents";
import {
  MCPToolset, StreamableHTTPConnectionParams,
} from "@google/adk/tools/mcp";

const toolset = new MCPToolset({
  connectionParams: new StreamableHTTPConnectionParams({
    url: "https://mcp.scalekit.com/googlecalendar",
    headers: { Authorization: `Bearer ${userScopedToken}` },
  }),
});

const agent = new Agent({
  name: "agent", model: "gemini-2.0-flash",
  tools: await toolset.getTools(),
});

Try these prompts

Paste any prompt into your agent to start managing Google Calendar.

Search & recall

Copy the prompt

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What meetings do I have tomorrow?

Copy the prompt

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Find all events with [person name] this month.

Copy the prompt

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List all meetings with [keyword] in the title this week.

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What is on my calendar for next Monday?

Scheduling & creation

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Schedule a 30-minute call with [email] next Tuesday at 2pm.

Copy the prompt

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Create a recurring weekly standup every Monday at 9am.

Copy the prompt

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Block 2 hours on Friday afternoon for deep work.

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Add [person email] to the [event name] meeting.

Updates & management

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Move my 3pm meeting tomorrow to 4pm.

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Cancel all meetings on [date].

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Update the description of [event name] to: [text].

Copy the prompt

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List all events I have organized this week.

SEE HOW AUTH WORKS

Users authorize Google Calendar once. Their Google credentials stay vaulted, every call is checked, and every action is logged.

1

Authorize

Your user connects

Google Calendar

once. We tie it to their identity and the meetings they approved — no shared bot account, no org-wide access

Who:

user ‘A’

when:

Once per user

access:

Limited to user

2

Store

Their

Google Calendar

token lives in a vault scoped to them. User A's meetings are never reachable by an agent acting for user B, even on the same connection

vault:

encrypted

scope:

per-user

tokens:

auto-refreshed

3

Resolve

When your agent calls a

Google Calendar

tool, we fetch the right token server-side. It never touches your agent, never appears in the LLM context, never shows up in your logs

speed:

~40ms

check:

before every call

seen by:

nobody

4

Audit

Every

Google Calendar

tool call is logged — who triggered it, which meeting was fetched, what came back. 90 days of history, tied to the user who authorized it

history:

90 days

export:

SIEM-ready

logged:

every call

Test other agents

Same per-user auth pattern across other scheduling agents and MCP connectors. Working code, live demos, fork what fits.

OPS

Email-to-calendar scheduling agent

Parse scheduling intent from Gmail threads and create Google Calendar events with the right attendees and timezone.

Gmail

Google Calendar

View agent

SALES

Sales call prep agent

Pull Granola notes and Attio contact history to draft a pre-call brief before every sales meeting. Zero rep input.

Granola

Attio

View agent

Why Scalekit

Secure your agent's access. Connectors ship in minutes

Other connector libraries treat auth as a demo afterthought. Scalekit starts with user identity, scope enforcement, and audit.

01.

Events booked on the wrong calendar

A shared Google service account looks fine in a demo. In production, every event created or modified appears on the wrong calendar, from the wrong identity. Calendar permissions break. Meeting invites come from a bot. Scalekit resolves the actual user's OAuth token, so events land on the right calendar.

// shared bot token
token = "sk_googlecalendar_shared_xxx"
audit → bot_service_account
user_filter → broken

// scalekit · per-user
token = resolve(user_id)
audit → user_abc
scope → enforced ✓

02.

Authentication is not authorization

03.

Multi-tenancy is architectural

04.

Google Calendar today. Zoom, Outlook, Calendly tomorrow.

“Our agents act across Salesforce, Gong, Google Drive, and more, on behalf of every customer. Scalekit behind the scenes meant we can keep adding tools without ever rebuilding how credentials or tool calling work.”

Venu Madhav Kattagoni

Head of Engineering / Von

FAQs

Frequently Asked Questions

Does the agent access Google Calendar as the user or as a shared key?

As the user. Each workspace member authorizes once and Scalekit resolves their credential at request time. Audit logs attribute every action to that user, not a shared service account.

Where is the Google Calendar oauth 2.0 stored?

In Scalekit's managed AES-256 token vault, namespaced per tenant. Refresh is automatic. Revocation is a single dashboard action. Tokens never appear in prompts, logs, or LLM context.

Can I limit what the agent is allowed to do in Google Calendar?

Yes. Pass a tool name filter to listScopedTools so the scheduling agent only sees the subset you authorize. Pre-API-call scope checks block out-of-policy actions before the request reaches Google Calendar.

What happens when a user revokes Google Calendar access?

The connection is invalidated on the next tool call. Subsequent requests for that user fail closed with a clear error. Other users in the tenant remain unaffected. The event is logged for audit.

Can the agent create events on shared calendars?

Yes, if the authorizing user has write access to that calendar in Google. Shared team calendars, group calendars, and the user's own calendar all work. Access mirrors what the user can do natively.

Google Calendar

Tools your scheduling agent reaches for on Google Calendar, scoped per user.