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How to integrate Zoho MCP with Google ADK

Connect Google ADK to Zoho MCP. Convert new leads to contacts in crm, add a note to an existing zoho deal, and more using natural language, with authentication handled for you.

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Zoho is a suite of cloud business apps for CRM, email marketing, and collaboration. It helps teams automate workflows and scale operations effortlessly.

102 Tools

Introduction

This guide walks you through connecting Zoho to Google ADK using the Composio tool router. By the end, you'll have a working Zoho agent that can create and convert leads, track deals, manage contacts and accounts, add notes and events, and search your CRM records through natural language commands.

This guide will help you understand how to give your Google ADK agent real control over a Zoho account through Composio's Zoho MCP server.

Before we dive in, let's take a quick look at the key ideas and tools involved.

Also integrate Zoho with

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TL;DR

Here's what you'll learn:
  • Get a Zoho account set up and connected to Composio
  • Install the Google ADK and Composio packages
  • Create a Composio Tool Router session for Zoho
  • Build an agent that connects to Zoho through MCP
  • Interact with Zoho using natural language

What is Google ADK?

Google ADK (Agents Development Kit) is Google's framework for building AI agents powered by Gemini models. It provides tools for creating agents that can use external services through the Model Context Protocol.

Key features include:

  • Gemini Integration: Native support for Google's Gemini models
  • MCP Toolset: Built-in support for Model Context Protocol tools
  • Streamable HTTP: Connect to external services through streamable HTTP
  • CLI and Web UI: Run agents via command line or web interface

What is the Zoho MCP server, and what's possible with it?

The Zoho 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 account. It provides structured and secure access to your Zoho CRM data, so your agent can create contacts and leads, manage deals, search records, track activities, and draft emails on your behalf.

  • Contact and lead management: Have your agent create contacts and leads, find existing records, and review prospect details in Zoho CRM.
  • Deal and account tracking: Let the agent create and update deals, review sales opportunities, search accounts, and update account details.
  • Tasks, calls, and event coordination: Direct your agent to find tasks, review logged calls, create events, and check upcoming meetings.
  • Notes, emails, and attachments: Instruct your agent to add notes to CRM records, review related emails and attachments, and prepare email drafts.
  • CRM record discovery: Have your agent search across Zoho CRM modules, list available modules, and retrieve related records for added context.

What is the Composio tool router, and how does it fit here?

What is Composio SDK?

Composio's Composio SDK helps agents find the right tools for a task at runtime. You can plug in multiple toolkits (like Gmail, HubSpot, and GitHub), and the agent will identify the relevant app and action to complete multi-step workflows. This can reduce token usage and improve the reliability of tool calls. Read more here: Getting started with Composio SDK

The tool router generates a secure MCP URL that your agents can access to perform actions.

How the Composio SDK works

The Composio SDK follows a three-phase workflow:

  1. Discovery: Searches for tools matching your task and returns relevant toolkits with their details.
  2. Authentication: Checks for active connections. If missing, creates an auth config and returns a connection URL via Auth Link.
  3. Execution: Executes the action using the authenticated connection.

Step-by-step Guide

Step by step09 STEPS
1

Prerequisites

Before starting, make sure you have:
  • A Google API key for Gemini models
  • A Composio account and API key
  • Python 3.9 or later installed
  • Basic familiarity with Python
2

Getting API Keys for Google and Composio

Google API Key
  • Go to Google AI Studio and create an API key.
  • Copy the key and keep it safe. You will put this in GOOGLE_API_KEY.
Composio API Key and User ID
  • Log in to the Composio dashboard.
  • Go to Settings → API Keys and copy your Composio API key. Use this for COMPOSIO_API_KEY.
  • Decide on a stable user identifier to scope sessions, often your email or a user ID. Use this for COMPOSIO_USER_ID.
3

Install dependencies

bash
pip install google-adk composio python-dotenv

Inside your virtual environment, install the required packages.

What's happening:

  • google-adk is Google's Agents Development Kit
  • composio connects your agent to Zoho via MCP
  • python-dotenv loads environment variables
4

Set up ADK project

bash
adk create my_agent

Set up a new Google ADK project.

What's happening:

  • This creates an agent folder with a root agent file and .env file
5

Set environment variables

bash
GOOGLE_API_KEY=your-google-api-key
COMPOSIO_API_KEY=your-composio-api-key
COMPOSIO_USER_ID=your-user-id-or-email

Save all your credentials in the .env file.

What's happening:

  • GOOGLE_API_KEY authenticates with Google's Gemini models
  • COMPOSIO_API_KEY authenticates with Composio
  • COMPOSIO_USER_ID identifies the user for session management
6

Import modules and validate environment

python
import os
import warnings

from composio import Composio
from dotenv import load_dotenv
from google.adk.agents.llm_agent import Agent
from google.adk.tools.mcp_tool.mcp_session_manager import StreamableHTTPConnectionParams
from google.adk.tools.mcp_tool.mcp_toolset import McpToolset

load_dotenv()

warnings.filterwarnings("ignore", message=".*BaseAuthenticatedTool.*")

GOOGLE_API_KEY = os.getenv("GOOGLE_API_KEY")
COMPOSIO_API_KEY = os.getenv("COMPOSIO_API_KEY")
COMPOSIO_USER_ID = os.getenv("COMPOSIO_USER_ID")

if not GOOGLE_API_KEY:
    raise ValueError("GOOGLE_API_KEY is not set in the environment.")
if not COMPOSIO_API_KEY:
    raise ValueError("COMPOSIO_API_KEY is not set in the environment.")
if not COMPOSIO_USER_ID:
    raise ValueError("COMPOSIO_USER_ID is not set in the environment.")
What's happening:
  • os reads environment variables
  • Composio is the main Composio SDK client
  • GoogleProvider declares that you are using Google ADK as the agent runtime
  • Agent is the Google ADK LLM agent class
  • McpToolset lets the ADK agent call MCP tools over HTTP
7

Create Composio client and Tool Router session

python
composio_client = Composio(api_key=COMPOSIO_API_KEY)

composio_session = composio_client.create(
    user_id=COMPOSIO_USER_ID,
    toolkits=["zoho"],
)

COMPOSIO_MCP_URL = composio_session.mcp.url,
print(f"Composio MCP URL: {COMPOSIO_MCP_URL}")
What's happening:
  • Authenticates to Composio with your API key
  • Declares Google ADK as the provider
  • Spins up a short-lived MCP endpoint for your user and selected toolkit
  • Stores the MCP HTTP URL for the ADK MCP integration
8

Set up the McpToolset and create the Agent

python
composio_toolset = McpToolset(
    connection_params=StreamableHTTPConnectionParams(
        url=COMPOSIO_MCP_URL,
        headers={"x-api-key": COMPOSIO_API_KEY}
    )
)

root_agent = Agent(
    model="gemini-2.5-flash",
    name="composio_agent",
    description="An agent that uses Composio tools to perform actions.",
    instruction=(
        "You are a helpful assistant connected to Composio. "
        "You have the following tools available: "
        "COMPOSIO_SEARCH_TOOLS, COMPOSIO_MULTI_EXECUTE_TOOL, "
        "COMPOSIO_MANAGE_CONNECTIONS, COMPOSIO_REMOTE_BASH_TOOL, COMPOSIO_REMOTE_WORKBENCH. "
        "Use these tools to help users with Zoho operations."
    ),
    tools=[composio_toolset],
)

print("\nAgent setup complete. You can now run this agent directly ;)")
What's happening:
  • Connects the ADK agent to the Composio MCP endpoint through McpToolset
  • Uses Gemini as the model powering the agent
  • Lists exact tool names in instruction to reduce misnamed tool calls
9

Run the agent

bash
# Run in CLI mode
adk run my_agent

# Or run in web UI mode
adk web

Execute the agent from the project root. The web command opens a web portal where you can chat with the agent.

What's happening:

  • adk run runs the agent in CLI mode
  • adk web . opens a web UI for interactive testing

Complete Code

Here's the complete code to get you started with Zoho and Google ADK:

python
import os
import warnings

from composio import Composio
from composio_google import GoogleProvider
from dotenv import load_dotenv
from google.adk.agents.llm_agent import Agent
from google.adk.tools.mcp_tool.mcp_session_manager import StreamableHTTPConnectionParams
from google.adk.tools.mcp_tool.mcp_toolset import McpToolset

load_dotenv()
warnings.filterwarnings("ignore", message=".*BaseAuthenticatedTool.*")

GOOGLE_API_KEY = os.getenv("GOOGLE_API_KEY")
COMPOSIO_API_KEY = os.getenv("COMPOSIO_API_KEY")
COMPOSIO_USER_ID = os.getenv("COMPOSIO_USER_ID")

if not GOOGLE_API_KEY:
    raise ValueError("GOOGLE_API_KEY is not set in the environment.")
if not COMPOSIO_API_KEY:
    raise ValueError("COMPOSIO_API_KEY is not set in the environment.")
if not COMPOSIO_USER_ID:
    raise ValueError("COMPOSIO_USER_ID is not set in the environment.")

composio_client = Composio(api_key=COMPOSIO_API_KEY, provider=GoogleProvider())

composio_session = composio_client.create(
    user_id=COMPOSIO_USER_ID,
    toolkits=["zoho"],
)

COMPOSIO_MCP_URL = composio_session.mcp.url


composio_toolset = McpToolset(
    connection_params=StreamableHTTPConnectionParams(
        url=COMPOSIO_MCP_URL,
        headers={"x-api-key": COMPOSIO_API_KEY}
    )
)

root_agent = Agent(
    model="gemini-2.5-flash",
    name="composio_agent",
    description="An agent that uses Composio tools to perform actions.",
    instruction=(
        "You are a helpful assistant connected to Composio. "
        "You have the following tools available: "
        "COMPOSIO_SEARCH_TOOLS, COMPOSIO_MULTI_EXECUTE_TOOL, "
        "COMPOSIO_MANAGE_CONNECTIONS, COMPOSIO_REMOTE_BASH_TOOL, COMPOSIO_REMOTE_WORKBENCH. "
        "Use these tools to help users with Zoho operations."
    ),  
    tools=[composio_toolset],
)

print("\nAgent setup complete. You can now run this agent directly ;)")

Conclusion

You've successfully integrated Zoho with the Google ADK through Composio's MCP Tool Router. Your agent can now interact with Zoho using natural language commands.

Key takeaways:

  • The Tool Router approach dynamically routes requests to the appropriate Zoho tools
  • Environment variables keep your credentials secure and separate from code
  • Clear agent instructions reduce tool calling errors
  • The ADK web UI provides an interactive interface for testing and development

You can extend this setup by adding more toolkits to the toolkits array in your session configuration.

TOOLS

Supported Tools

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

Add Tags to Zoho CRM Records

Apply one or more existing tags to up to 500 records in a Zoho CRM module.

Associate Email with Zoho CRM Record

Add an existing sent or received email to a Zoho CRM record's history.

Convert Zoho CRM Lead

Converts a lead into a contact, account, and optionally a deal in Zoho CRM.

Count Zoho CRM Records

Count all records or records matching one filter in a Zoho CRM module.

Create Zoho CRM Automation Task

Create an automation task with typed static, merge, date, or datetime mappings.

Create Contact in Zoho CRM

Creates a new contact record in Zoho CRM.

Create Zoho CRM Custom Fields

Create one to five custom fields in a Zoho CRM module.

Create Zoho CRM Custom View

Create one custom view for a Zoho CRM module.

Create Deal in Zoho CRM

Creates a new deal in Zoho CRM representing a sales opportunity with deal name, stage, amount, and closing date.

Create Email Draft in Zoho CRM

Creates email drafts for a specific record in Zoho CRM.

Create Zoho Event

Creates a new Event record in Zoho CRM.

Create Lead in Zoho CRM

Creates a new lead record in Zoho CRM with the specified details.

Create Note in Zoho CRM

Creates a new note attached to a specific record in Zoho CRM.

Create Zoho CRM Record

Creates new records in a specified module in Zoho CRM.

Create Zoho CRM Tag

Creates a new tag in Zoho CRM for a specific module.

Delete Zoho Account

Deletes an existing account record from Zoho CRM.

Delete Zoho CRM Contact

Deletes a contact from Zoho CRM.

Delete Zoho CRM Deal

Deletes a deal record from Zoho CRM.

Delete Zoho CRM Email Draft

Delete one unsent email draft associated with a Zoho CRM record.

Delete Zoho CRM Event

Move one Zoho CRM Event record to the recycle bin.

Delete Zoho CRM Lead

Move one Zoho CRM Lead record to the recycle bin.

Delete Zoho CRM Note

Move one Zoho CRM note to the recycle bin.

Delete Zoho CRM Records

Move up to 100 records from a Zoho CRM module to the recycle bin.

Delete Zoho CRM Tag

Delete one Zoho CRM tag definition by its tag ID.

Download Zoho CRM Record Attachment

Download one attachment from a Zoho CRM record as a file.

Download Zoho CRM Record Photo

Download the binary profile photo attached to a supported CRM record.

Get Zoho CRM Account

Retrieves a specific Account record from Zoho CRM by its unique identifier.

Get Zoho CRM Assignment Rule

Retrieve one assignment rule and its module-specific configuration.

Get Zoho CRM Automation Task

Retrieve one configured Zoho CRM automation task and its field mappings.

Get Zoho CRM Blueprint

Retrieve one Zoho CRM blueprint and optional configuration details.

Get Call

Retrieves a specific Call record by its unique identifier from Zoho CRM.

Get Zoho CRM Contact

Retrieves a single contact record by ID from Zoho CRM.

Get Zoho CRM Custom Views

List custom views for a Zoho CRM module or inspect one view by ID.

Get Zoho CRM Deal

Retrieve one Zoho CRM Deal by record ID without a field projection.

Get Email Drafts for Zoho CRM Record

Retrieves email drafts associated with a specific record in Zoho CRM.

Get Zoho Event

Retrieves a specific event record from Zoho CRM by its unique identifier.

Get From Addresses

Retrieves the list of from addresses configured for email operations in Zoho CRM.

Get Zoho CRM Kiosk States

List a kiosk's states or retrieve one state and its associated elements.

Get Zoho CRM Layouts

List layouts for a CRM module or retrieve one complete layout definition.

Get Zoho CRM Module Fields Metadata

Retrieves field metadata for a Zoho CRM module including API names, data types, permissions, and configuration details.

Get Zoho CRM Note

Retrieves a single note by its unique identifier from Zoho CRM.

Get Zoho CRM Pipelines

Retrieve pipeline and stage configuration for a Zoho CRM Deals layout.

Get Zoho CRM Product

Retrieve one Zoho CRM Product by record ID.

Get Zoho CRM Profile

Retrieve one Zoho CRM permission profile and its expanded permissions.

Get Zoho CRM Record

Retrieve one record from a standard or custom Zoho CRM module by ID.

Get Zoho CRM Record Email

Retrieve one email associated with a Zoho CRM record, including its body.

Get Zoho CRM Record Emails

Retrieves a page of emails associated with a specific record in Zoho CRM.

Get Zoho CRM Record Timeline

Retrieve chronological field and related-record history for a Zoho CRM record.

Get Zoho CRM Related Lists Metadata

Retrieves related list metadata for a Zoho CRM module to discover correct api_name values.

Get Zoho CRM Related Records

Fetch related-list records (e.

Get Zoho CRM Task

Retrieves a specific task record by its ID from Zoho CRM.

Get Zoho CRM User

Retrieves a Zoho CRM user by ID, including name, email, role, profile, status, and preferences.

Get Zoho CRM Webform

Retrieve one configured Zoho CRM webform by ID.

Get Zoho CRM Workflow Rule

Retrieve one Zoho CRM workflow rule and its complete configuration.

Get Zoho CRM Records

Retrieves records from a specified module in Zoho CRM.

Get Zoho CRM Users

Tool to retrieve users from Zoho CRM.

List Zoho CRM Access Settings

List roles or permission profiles configured in Zoho CRM.

List Zoho CRM Accounts

Retrieves a list of account records from Zoho CRM with pagination and filtering support.

List Zoho CRM Cadences

List Zoho CRM cadence definitions using optional filters.

List Zoho CRM Calls

Retrieves Call activity records from Zoho CRM with pagination support.

List Zoho CRM Connected Workflow Rules

List trigger conditions for a module's rules in a connected workflow.

List Contacts

Retrieves contact records from Zoho CRM with support for pagination, filtering, and sorting.

List Deals

Retrieves a list of deals from Zoho CRM with support for filtering, sorting, and pagination.

List Zoho CRM Events

Lists events (meetings) from Zoho CRM with pagination and filtering support.

List Zoho CRM Functions

List configured Zoho CRM functions and their metadata.

List Zoho CRM Leads

Retrieves lead records from Zoho CRM's Leads module with pagination support.

List Zoho CRM Modules

Lists all available Zoho CRM modules (standard + custom) to reliably select module API names/IDs for operations.

List Zoho CRM Notes

Retrieves one paginated list of notes from Zoho CRM across all modules.

List Attachments for Zoho CRM Record

Tool to list attachment metadata (id, File_Name, Size, Created_Time, etc.

List Zoho CRM Tags

List the tags available for a Zoho CRM module.

List Zoho CRM Tasks

Retrieves tasks from the Tasks module in Zoho CRM with support for filtering, pagination, and sorting.

List Zoho CRM Variables

List Zoho CRM configuration variables and their current values.

List Zoho CRM Workflow Rules

List and filter workflow rules configured in Zoho CRM.

Merge Zoho CRM Leads

Merge duplicate leads into a retained master lead and delete the child leads.

Search Zoho CRM Accounts

Search for Account records within Zoho CRM using server-side queries.

Search Zoho CRM Calls

Search for Call records in Zoho CRM using server-side queries.

Search Zoho CRM Contacts

Search for contacts in Zoho CRM using server-side queries by criteria, email, phone, or keyword.

Search Deals in Zoho CRM

Search for Deal records in Zoho CRM using server-side queries.

Search Events

Search for Events in Zoho CRM using server-side queries.

Search Leads

Search for lead records in Zoho CRM using server-side queries.

Search Notes

Search for notes in Zoho CRM using server-side queries.

Search Zoho CRM Tasks

Search for tasks in Zoho CRM using flexible criteria.

Search Zoho CRM Records

Search for records within a Zoho CRM module using server-side queries.

Update Zoho CRM Account

Updates an existing Account record in Zoho CRM with the specified field values.

Update Zoho CRM Call

Updates existing call records in the Calls module in Zoho CRM.

Update Zoho CRM Custom Fields

Update custom-field definitions; some changes can alter existing record values.

Update Zoho CRM Custom View

Update the configuration of one Zoho CRM custom view.

Update Zoho CRM Deal

Updates an existing deal in Zoho CRM.

Update Zoho CRM Email Draft

Updates an existing email draft associated with a record in Zoho CRM.

Update Zoho CRM Event

Updates existing events in Zoho CRM.

Update Zoho CRM Layout

Update a custom layout's metadata, profile access, sections, or fields.

Update Lead

Updates existing lead records in Zoho CRM.

Update Zoho CRM Note

Updates an existing note in Zoho CRM.

Update Related Records in Zoho CRM

Associates or updates relationships between records across different modules in Zoho CRM.

Update Zoho CRM User

Update a Zoho CRM user's name, email, contact details, locale, time preferences, role, profile, or status by ID.

Update Zoho CRM Webform

Replace one Zoho CRM webform configuration using the V8 path-ID route.

Update Zoho CRM Workflow Rule

Update a Zoho CRM workflow rule's name, description, or activation status by ID.

Update Zoho CRM Record

Updates existing records in a specified module in Zoho CRM.

Upload Attachment to Zoho CRM Record

Tool to upload a file as an Attachment to a specific Zoho CRM record.

Upload Zoho CRM Record Photo

Set or replace the photo on a supported Zoho CRM record.

Upsert Zoho CRM Records

Insert or update up to 100 records using Zoho CRM duplicate matching.

Validate Zoho CRM Credentials

Validates Zoho CRM credentials by retrieving current user information.

FRAMEWORKS

How to build Zoho MCP Agent with another framework

Claude Code logo

Claude Code

Use Zoho MCP with Claude Code

Claude Cowork logo

Claude Cowork

Use Zoho MCP with Claude Cowork

OpenAI Agents SDK logo

OpenAI Agents SDK

Use Zoho MCP with OpenAI Agents SDK

Claude Agent SDK logo

Claude Agent SDK

Use Zoho MCP with Claude Agent SDK

Muse logo

Muse

Use Zoho MCP with Muse

Codex logo

Codex

Use Zoho MCP with Codex

Kimi Code logo

Kimi Code

Use Zoho MCP with Kimi Code

OpenClaw logo

OpenClaw

Use Zoho MCP with OpenClaw

Hermes logo

Hermes

Use Zoho MCP with Hermes

Atomic Agent logo

Atomic Agent

Use Zoho MCP with Atomic Agent

CLI logo

CLI

Use Zoho MCP with CLI

LangChain logo

LangChain

Use Zoho MCP with LangChain

Vercel AI SDK logo

Vercel AI SDK

Use Zoho MCP with Vercel AI SDK

Mastra AI logo

Mastra AI

Use Zoho MCP with Mastra AI

LlamaIndex logo

LlamaIndex

Use Zoho MCP with LlamaIndex

CrewAI logo

CrewAI

Use Zoho MCP with CrewAI

Pydantic AI logo

Pydantic AI

Use Zoho MCP with Pydantic AI

AutoGen logo

AutoGen

Use Zoho MCP with AutoGen

FAQ

Frequently asked questions

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

Yes, you can. Google ADK 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 tools.

Yes, absolutely. You can configure which Zoho 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 data and credentials are handled as safely as possible.

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