How to connect Zoho Calendar to Claude

Connect Claude Web, Desktop and Cowork to Zoho Calendar MCP. Create a recurring zoho calendar team meeting, check availability before scheduling a client call, and more using natural language, with authentication handled for you.

Zoho Calendar logoZoho Calendar
Oauth2

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

Introduction

Claude is Anthropic's AI assistant, available on the web, in the desktop app, and on mobile. Cowork is its agent for knowledge work, and it runs on all of those surfaces too. Connected to your apps, Claude can work with your files and services to accomplish complex tasks on your behalf.

This guide walks you through the easiest and most secure way to connect your Zoho Calendar account to Claude via Composio Connect, enabling it to create a recurring Zoho Calendar team meeting, check availability before scheduling a client call, book an organizational conference room for Friday, and more such actions on your behalf without compromising your account security.

Setup is the same on Claude Web, Desktop, and Cowork, and you only need to do it once. The connector is tied to your account, so it's available in all three.

Also integrate Zoho Calendar with

Connecting Zoho Calendar to Claude Web, Desktop, and Cowork

Two ways to add the Composio connector. Pick whichever you prefer.

1. Add with one click

Click the button. Claude opens with the Composio connector filled in. Click Add, then go to step 2.

Add to Claude

Add manually

In Claude Desktop, click Customize in the left sidebar, then select Connectors and click the + icon at the top.

Claude Desktop connectors screen with Add custom connector selected

Click Add custom connector and paste in the Composio MCP server URL:

bash
https://connect.composio.dev/mcp
Add custom connector dialog with Composio MCP server URL

2. Authorize in your browser

Click Connect. You'll be redirected to a browser window where you can authorize Composio to continue.

Composio authorization screen for Claude Web, Desktop, and Cowork

3. Connect your Zoho Calendar account

Back in Claude, ask it to connect to Zoho Calendar or give it any Zoho Calendar-related task.

For example, ask Claude to:

  • "Create a recurring Zoho Calendar team meeting"
  • "Check availability before scheduling a client call"
  • "Book an organizational conference room for Friday"

It will prompt you to authenticate and authorize access.

That's it. Composio's tools are now available in Claude, and your Zoho Calendar account is ready to use.

What is the Zoho Calendar Claude Connector, and what's possible with it?

The Zoho Calendar MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Zoho Calendar account. It provides structured and secure access to your calendars, events, availability, settings, and resource bookings, so your agent can schedule events, find free time, manage calendars, and book rooms on your behalf.

  • Event and calendar management: Have your agent create timed, all-day, or recurring events, retrieve event details, list events for a date range, and delete events or selected recurrences.
  • Calendar organization: Let the agent create, view, list, and delete personal calendars, check calendar settings, and review sharing entries for a calendar.
  • Availability planning: Direct your agent to check a user's free and busy times, inspect room availability, and list recurring event instances within a date range.
  • Room booking: Instruct your agent to find available rooms, create bookings with attendees and recurrence options, view or delete bookings, and list your upcoming room reservations.
  • Resource administration: Have your agent manage resource booking branches, rooms, features, favorite resources, and organization or user booking settings.

Troubleshooting

1. Why does Claude not use the Composio connector for Zoho Calendar?

The connector can show as connected, but Claude must use it in each Zoho Calendar conversation.

  • Click + at the lower left of the chat, or type /.
  • Hover Connectors.
  • Turn on Composio.
  • Ask Claude to connect to Zoho Calendar again.

2. Why does Claude show an MCP server error before Zoho Calendar connects?

Claude can show Couldn't reach the MCP server or Authorization with the MCP server failed when you add the connector for Zoho Calendar.

  • Check that the connector URL is https://connect.composio.dev/mcp.
  • Connectors run from Anthropic's cloud, so your device network is usually not the problem.
  • Add the connector again from Customize > Connectors, then ask Claude to connect Zoho Calendar.
  • If it fails again, send the error and the ofid_ reference id to support@composio.dev.

3. Why does the Zoho Calendar authorization link not work?

The Composio connector is one server. Your Zoho Calendar account connects separately when Claude asks for it.

  • If the browser does not open, or the link expires, ask Claude to retry the Zoho Calendar connection.
  • Composio creates a fresh Zoho Calendar authorization link.
  • Open that link in your browser and finish the Zoho Calendar sign-in.

4. Why do Zoho Calendar actions fail after they worked before?

The Zoho Calendar connection can expire or lose permission.

  • Ask Claude to inspect the Zoho Calendar connection.
  • If the connection is unhealthy, disconnect it when Claude prompts you.
  • Reconnect the Zoho Calendar account and retry the action.
  • If Claude shows a permission prompt, approve it before Claude changes data in Zoho Calendar.
  • If the action still fails with a permission error, check that the connected account has that permission in Zoho Calendar itself.

5. How do I switch to a different Zoho Calendar account?

Claude can manage the Zoho Calendar connection for you.

  • Ask Claude to disconnect or delete the current Zoho Calendar account.
  • Ask Claude to connect Zoho Calendar again.
  • Open the new Composio authorization link for Zoho Calendar.
  • Sign in with the other Zoho Calendar account in the browser.
  • After the account connects, ask Claude to retry the Zoho Calendar task.

6. Why is my Zoho Calendar connection missing in Claude Desktop or on a Team plan?

The connector belongs to your Claude account, so your Zoho Calendar connection works in Claude Web, Desktop, and Cowork.

  • In Claude Desktop, open Customize > Connectors.
  • Next to Composio, click ⋮ and click Clear cache.
  • If Zoho Calendar tools still do not appear, click ⋮, disconnect, remove the connector, and add it again.
  • On Team or Enterprise, an Owner or Primary Owner must enable the connector before you can connect Zoho Calendar.
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.

FAQ

Frequently asked questions

With a standalone Zoho Calendar MCP server, the agents and LLMs can only access a fixed set of Zoho Calendar tools tied to that server. However, with the Composio Tool Router, agents can dynamically load tools from Zoho Calendar and many other apps based on the task at hand, all through a single MCP endpoint.

Yes, you can. Claude Cowork fully supports MCP integration. You get structured tool calling, message history handling, and model orchestration while Tool Router takes care of discovering and serving the right Zoho Calendar tools.

Yes, absolutely. You can configure which Zoho Calendar scopes and actions are allowed when connecting your account to Composio. You can also bring your own OAuth credentials or API configuration so you keep full control over what the agent can do.

All sensitive data such as tokens, keys, and configuration is fully encrypted at rest and in transit. Composio is SOC 2 Type 2 compliant and follows strict security practices so your Zoho Calendar data and credentials are handled as safely as possible.

Start with Zoho Calendar.It takes 30 seconds.

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

Start building