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Zoho Calendar MCP server for AI agents and assistants

Securely connect your AI agents and chatbots (Claude, ChatGPT, Cursor, etc) with Zoho Calendar MCP or direct API to create events, check availability, manage calendars, and book organizational resources through natural language.

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Zoho Calendar logoZoho Calendar
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Zoho Calendar is a scheduling service for managing calendars, events, availability, and resource bookings. It helps teams coordinate meetings and shared resources across Zoho data centers.

57 Tools

Try Zoho Calendar now

Type what you want done — sign in and watch it run live in the Tool Router playground.

TOOL ROUTER PLAYGROUND
Zoho Calendar
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TOOLS

Supported Tools

Every Zoho Calendar action and event your agent gets out of the box.

Check Resource Booking Access

Check whether Resource Booking is enabled for the connected Zoho account.

Create Resource Booking

Book one or more available rooms in paid Zoho Resource Booking, optionally with attendees, groups, notifications, or a daily, weekly, or monthly recurrence.

Create Resource Booking Branch

Create a branch with buildings and floors in paid Zoho Resource Booking.

Create Calendar

Create a personal calendar with a required name and color.

Create Event

Create a timed, all-day, or recurring Zoho Calendar event without creating Zoho Meeting conferencing.

Create Resource Booking Room

Create a room in paid Zoho Resource Booking.

Create Resource Booking Organization Settings

Initialize organization-wide limits in paid Zoho Resource Booking.

Create Resource Booking User Settings

Initialize user preferences in paid Zoho Resource Booking.

Create Resource Feature

Create a feature definition in paid Zoho Resource Booking.

Delete Resource Booking

Permanently delete one room booking, all or future recurrence occurrences, or one selected occurrence.

Delete Resource Booking Branch

Permanently delete a branch from paid Zoho Resource Booking.

Delete Calendar

Permanently delete a calendar and return Zoho's deletion envelope.

Delete Event

Delete an event, all following recurrences, or one recurrence instance using the latest ETag.

Delete Event Attachments

Remove specified attachments from an event using its full date/time data and latest ETag; the event itself remains.

Delete Resource

Permanently delete a room resource from paid Zoho Resource Booking.

Delete Resource Feature

Permanently delete a feature from paid Zoho Resource Booking.

Download Event Attachment

Download one event attachment.

Download Resource Image

Download one resource image by its opaque image ID, exact provider file name, and owning resource ID.

Favorite Resource

Mark one room as a favorite for the connected user.

Get Resource Booking

Return one room booking or a specified recurrence occurrence from paid Zoho Resource Booking.

Get Resource Booking Branch

Return one Resource Booking branch with its buildings and floors.

Get Calendar

Return full details for one calendar UID, including the documented default or primary aliases.

Get Calendar Settings

Return the connected user's Calendar preferences.

Get Event

Return full details for one event or a specified recurrence instance.

Get Resource Booking Resource

Return one room from paid Zoho Resource Booking.

Get Resource Booking Organization Settings

Return organization-wide policy settings from paid Zoho Resource Booking.

Get Resource Booking User Settings

Return user preferences from paid Zoho Resource Booking.

Get Resource Feature

Return one feature definition from paid Zoho Resource Booking.

Get Resource Free Busy

Return strict date-keyed busy intervals for one room resource over an exact inclusive date range.

Get User Free Busy

Return event-based or time-based free/busy data for one email and exact local-naive time range.

List Resource Bookings

Return bookings for selected rooms in a paid Zoho Resource Booking branch.

List Resource Booking Branches

Return all branches from paid Zoho Resource Booking, including their buildings and floors.

List Calendars

Return calendars visible to the connected user, optionally by documented category and hidden status.

List Calendar Shares

Return user and group sharing entries for one calendar.

List Event Instances

Return recurrence instances for one repeating event in a required range of at most 90 days.

List Events

Return events in one calendar for a required range of at most 31 days.

List Favorite Resources

Return the connected user's favorite room resources from paid Zoho Resource Booking.

Get Group Attendee Statuses

Return member RSVP statuses for one group attendee on an event.

List My Resource Bookings

Return the connected user's room bookings for an exact date range.

List Resource Availability

Return room resources and availability for a branch, optional building or floor, and an exact date/time range.

List Resource Booking User Settings

List user settings for at least one branch, building, or floor in paid Zoho Resource Booking.

List Resource Features

Return all feature definitions from paid Zoho Resource Booking.

List Resources

Return room resources for at least one branch, building, or floor.

Move Event

Move an event between personal or group calendars, optionally changing documented event details; shared and app calendars are unsupported and recurrence changes affect all occurrences.

Replace Event

Replace an event using complete date/time data and its latest ETag, without adding Zoho Meeting conferencing.

Unfavorite Resource

Remove one room from the connected user's favorites.

Update Resource Booking

Update a room booking or selected recurrence occurrences in paid Zoho Resource Booking.

Update Resource Booking Branch

Update a branch or add or remove its buildings and floors in paid Zoho Resource Booking.

Update Calendar

Update one or more documented properties of an existing calendar.

Update Calendar Settings

Update a non-empty set of the connected user's documented Calendar preferences.

Update Calendar Share

Supports add, edit, and revoke modes for one user or group calendar share; operation='delete' revokes access, so every call is pessimistically gated as destructive.

Update Event

Partially update event fields or attendee data using exactly one documented payload.

Update Resource

Update a room, its feature assignments, or its visibility in paid Zoho Resource Booking.

Update Resource Booking Organization Settings

Update organization-wide booking limits in paid Zoho Resource Booking.

Update Resource Booking User Settings

Update user preferences in paid Zoho Resource Booking.

Update Resource Feature

Rename or hide a feature in paid Zoho Resource Booking.

Upload Event Attachment

Upload one file of at most 10,240 kB.

SETUP GUIDE

Connect Zoho Calendar MCP Tool with your Agent

1

Install Composio

typescript
npm install @composio/core ai @ai-sdk/mcp @ai-sdk/openai
Install the Composio SDK and your agent framework
2

Create a session with MCP enabled

typescript
import { Composio } from "@composio/core";

const composio = new Composio();
const { mcp } = await composio.create("your-user-id", {
  toolkits: ["zoho_calendar"],
  mcp: true,
});
Create a session scoped to Zoho Calendar and read its MCP URL and headers
3

Connect your agent to the MCP server

typescript
import { createMCPClient } from "@ai-sdk/mcp";
import { openai } from "@ai-sdk/openai";
import { generateText, stepCountIs } from "ai";

const client = await createMCPClient({
  transport: { type: "http", url: mcp.url, headers: mcp.headers },
});

const { text } = await generateText({
  model: openai("gpt-5.6-sol"),
  tools: await client.tools(),
  prompt: "Create a Zoho Calendar event for a project kickoff tomorrow at 10 AM for one hour",
  stopWhen: stepCountIs(10),
});

console.log(text);
await client.close();
Pass the session's MCP URL and headers to your agent and run a Zoho Calendar request
SETUP GUIDE

Connect Zoho Calendar API Tool with your Agent

1

Install Composio

typescript
npm install @composio/core @composio/openai openai
Install the Composio SDK, the OpenAI provider, and the OpenAI SDK
2

Create a Composio session

typescript
import OpenAI from "openai";
import { Composio } from "@composio/core";
import { OpenAIResponsesProvider } from "@composio/openai";

const composio = new Composio({ provider: new OpenAIResponsesProvider() });
const client = new OpenAI();

const session = await composio.create("your-user-id", { toolkits: ["zoho_calendar"] });
const tools = await session.tools();
Initialize Composio with the OpenAI Responses provider and create a session scoped to Zoho Calendar
3

Run Zoho Calendar tools with your agent

typescript
let response = await client.responses.create({
  model: "gpt-5.6-sol",
  tools,
  input: [{ role: "user", content: "Create a Zoho Calendar event for a project kickoff tomorrow at 10 AM for one hour" }],
});

while (response.output.some((o) => o.type === "function_call")) {
  const outputs = await composio.provider.handleToolCalls(session, response.output);
  response = await client.responses.create({
    model: "gpt-5.6-sol",
    tools,
    previous_response_id: response.id,
    input: outputs,
  });
}

console.log(response.output_text);
Send a request, execute the Zoho Calendar tool calls through the session, and print the final answer

Why Use Composio?

AI Native Zoho Calendar Integration

  • Supports both Zoho Calendar MCP and direct API based integrations
  • Structured, LLM-friendly schemas for reliable tool execution
  • Rich coverage for reading, writing, and querying your Zoho Calendar data

Managed Auth

  • Built-in OAuth handling with automatic token refresh and rotation
  • Central place to manage, scope, and revoke Zoho Calendar access
  • Per user and per environment credentials instead of hard-coded keys

Agent Optimized Design

  • Tools are tuned using real error and success rates to improve reliability over time
  • Comprehensive execution logs so you always know what ran, when, and on whose behalf

Enterprise Grade Security

  • Fine-grained RBAC so you control which agents and users can access Zoho Calendar
  • Scoped, least privilege access to Zoho Calendar resources
  • Full audit trail of agent actions to support review and compliance
FRAMEWORKS

Use Zoho Calendar with any AI Agent Framework

Choose a Framework you want to connect Zoho Calendar with

ChatGPT logo

ChatGPT

Use Zoho Calendar MCP with ChatGPT

Claude Cowork logo

Claude Cowork

Use Zoho Calendar MCP with Claude Cowork

Hermes logo

Hermes

Use Zoho Calendar MCP with Hermes

Atomic Agent logo

Atomic Agent

Use Zoho Calendar MCP with Atomic Agent

Rolling this out across your team?

Give your team centralized access control across every framework with Composio’s MCP Gateway.

EXPLORE MCP GATEWAY
FAQ

Frequently asked questions

Zoho Calendar requires connections to go through your own OAuth app. You register it once with Zoho Calendar, add its client ID and secret in the Composio dashboard, and from then on everyone connects by signing in to Zoho Calendar as usual. Composio handles the rest of the flow and the token refresh.

Yes! Composio's Tool Router enables agents to use multiple toolkits. Learn more.

Yes. Composio is SOC 2 Type II compliant and is built to keep your Zoho Calendar connection and credentials secure. OAuth tokens and API keys are encrypted, and sensitive customer data is protected at rest and in transit.

Composio also undergoes independent security testing and continuously monitors its systems for security threats. You can review the latest reports and policies in the Composio Trust Center.

Composio maintains and updates all toolkit integrations automatically, so your agents always work with the latest API versions.

When you connect a Zoho Calendar account through Composio, every action runs under that account, so anything the agent creates, sends, or changes shows up in Zoho Calendar as done by you. Keep an approval step in your prompt for actions with side effects, such as sending or deleting, and have the agent draft first.

Exactly the ones Zoho Calendar lists on its consent screen when you connect. Review that screen before approving. If you connect a work account, your Zoho Calendar administrator may need to approve the app first, and you can revoke the access inside Zoho Calendar whenever you want.

Yes. Composio supports multiple connected accounts for the same app, and that works in Claude, ChatGPT, or any other assistant you connect through Composio. Give each Zoho Calendar connection a name such as work or personal, and the assistant uses the one you mention in the request. Each account keeps its own credentials and nothing is merged.

Composio refreshes Zoho Calendar tokens automatically, so day to day you do nothing. If you revoke access inside Zoho Calendar, or Zoho Calendar invalidates the session, the connection shows as expired in Composio and the agent stops acting on that account until you reconnect it, which is a single sign-in.

Composio's free Hobby plan includes 100,000 tool calls per month with no credit card, which covers most personal Zoho Calendar use. Paid plans add higher limits and team features. Your Zoho Calendar plan and its API limits still apply as usual.

Built-in connectors usually give one AI access to a limited set of apps. Many people use Composio because it lets their AI connect to more apps than it normally supports, or connect to multiple accounts for the same app (e.g. connect Claude to multiple Zoho Calendar accounts).

With Composio, you connect Zoho Calendar once and then use it across different AI assistants without setting it up separately in each one. Connect your apps to Composio once, then connect Composio to whichever AI you use, whether that's Claude, ChatGPT, Hermes, or your own custom assistant.

Start with Zoho Calendar.It takes 30 seconds.

Managed auth, hosted MCP servers, and every Zoho Calendar tool your agent needs.Free to start.

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