How to integrate One drive MCP with Google ADK

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Introduction

This guide walks you through connecting One drive to Google ADK using the Composio tool router. By the end, you'll have a working One drive agent that can share project folder with your team, download the latest version of report.docx, check who can access budget.xlsx through natural language commands.

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

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

Also integrate One drive with

TL;DR

Here's what you'll learn:
  • Get a One drive account set up and connected to Composio
  • Install the Google ADK and Composio packages
  • Create a Composio Tool Router session for One drive
  • Build an agent that connects to One drive through MCP
  • Interact with One drive 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 One drive MCP server, and what's possible with it?

The One drive MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your OneDrive account. It provides structured and secure access to your cloud files and folders, so your agent can perform actions like uploading documents, sharing files, managing storage, and retrieving version histories on your behalf.

  • File and folder management: Effortlessly copy, move, or delete files and folders, keeping your OneDrive organized with just a prompt.
  • Easy sharing and collaboration: Instantly generate secure sharing links for documents or folders, making collaboration with others seamless.
  • File download and preview: Have your agent fetch files or retrieve visual thumbnails for quick previews and streamlined access.
  • Access control and permissions review: Check who can view or edit any file or folder, and manage sharing permissions without manual clicks.
  • Version tracking and quota monitoring: Retrieve version histories for files and monitor your storage quota to stay on top of changes and space usage.

Supported Tools & Triggers

Tools
Triggers
Check In Drive ItemTool to check in a checked out driveItem resource, making the version of the document available to others.
Checkout Drive ItemTool to check out a driveItem to prevent others from editing it and make your changes invisible until checked in.
Copy ItemTool to copy a DriveItem (file or folder) to a new location asynchronously.
Create Drive Item PermissionTool to create a new permission on a OneDrive drive item.
Create Sharing LinkTool to create a sharing link for a DriveItem (file or folder) by its unique ID.
Delete ItemTool to delete a DriveItem (file or folder) by its unique ID from the authenticated user's OneDrive.
Permanently Delete Drive ItemTool to permanently delete a driveItem by its ID without moving it to the recycle bin.
Delete Drive Item PermissionTool to delete a permission from a drive item.
Delete Shares PermissionTool to delete the permission navigation property for a shared drive item.
Discard CheckoutTool to discard the checkout of a driveItem, releasing it and discarding any changes made while checked out.
Download a fileDownloads a file from a user's OneDrive using its item ID, which must refer to a file and not a folder.
Download file by pathDownloads the contents of a file from OneDrive by its path.
Download item as formatTool to download the contents of a driveItem converted to a specific format (e.
Download Drive Item Version ContentTool to download the contents of a specific previous version of a drive item (file).
Follow Drive ItemTool to follow a driveItem (file or folder) in OneDrive or SharePoint.
Get DriveRetrieves the properties and relationships of a Drive resource by its unique ID.
Get DriveItem by Sharing URLTool to resolve a OneDrive/SharePoint sharing URL (or shareId) to a DriveItem with driveId and itemId.
Get Drives FollowingTool to retrieve a specific followed driveItem from a drive.
Get Group DriveTool to retrieve the document library (drive) for a Microsoft 365 group.
Get Item MetadataRetrieves the metadata of a DriveItem by its unique ID.
Get Item PermissionsRetrieves the permissions of a DriveItem by its unique ID within a specific Drive.
Get Item ThumbnailsTool to retrieve the thumbnails associated with a DriveItem.
Get Item VersionsTool to retrieve the version history of a DriveItem by its unique ID.
Get Recent ItemsGet files and folders recently accessed by the user.
Get Drive Root FolderTool to retrieve metadata for the root folder of the signed-in user's OneDrive.
Get Shared Item by ShareIdTool to access a shared DriveItem or collection of shared items using a shareId or encoded sharing URL.
Get Shared ItemsTool to retrieve items shared with the authenticated user (not items the user has shared with others).
Get SharePoint List ItemsTool to get the items (list items) within a specific SharePoint list on a site.
Get Site DetailsRetrieves metadata for a specific SharePoint site by its ID.
Get SharePoint Site Page ContentGets the content of a modern SharePoint site page.
Get Drive Special FolderTool to retrieve a special folder in OneDrive by name.
Grant Shares PermissionTool to grant users access to a link represented by a permission using an encoded sharing URL.
Invite User to Drive ItemTool to invite users or grant permissions to a specific item in a OneDrive drive.
List Drive ActivitiesTool to retrieve recent activities on the authenticated user's OneDrive.
List Drive BundlesTool to retrieve a list of bundle resources from a specified drive.
List DrivesTool to retrieve a list of Drive resources available to the authenticated user, or for a specific user, group, or site.
List Folder ChildrenList the direct children (files/folders) of a OneDrive/SharePoint folder by DriveItem ID or path.
List Drive Item ActivitiesTool to list recent activities for a specific item in a OneDrive drive.
List Root Drive ChangesTool to list changes in the root of the user's primary drive using a delta token.
List Shares PermissionTool to retrieve permission details for a shared OneDrive or SharePoint item using a share ID.
List SharePoint List Items DeltaTool to track changes to items in a SharePoint list using a delta query.
List Site ColumnsTool to list all column definitions for a SharePoint site.
List Site Drive Items DeltaTool to track changes to DriveItems in the default document library of a SharePoint site.
List Site ListsTool to list all lists under a specific SharePoint site.
List Site SubsitesTool to list all subsites of a SharePoint site.
List SubscriptionsTool to list the current subscriptions for the authenticated user or app.
Move ItemTool to move a file or folder to a new parent folder in OneDrive.
Create folderCreates a new folder in the user's OneDrive, automatically renaming on conflict, optionally within a specified parent_folder (by ID or full path from root) which, if not the root, must exist and be accessible.
Create a new text fileCreates a new plain-text file with specified content in the authenticated user's personal OneDrive, using either the folder's unique ID or its absolute path relative to the user's OneDrive root (paths are automatically resolved to IDs); note that OneDrive may rename or create a new version if the filename already exists.
Find ItemNon-recursively finds an item (file or folder) in a specified OneDrive folder; if `folder` is provided as a path, it must actually exist.
Find FolderFinds folders by name within an accessible parent folder in OneDrive, or lists all its direct child folders if no name is specified.
List OneDrive itemsRetrieves all files and folders as `driveItem` resources from the root of a specified user's OneDrive, automatically handling pagination.
Upload fileUploads a file to a specified OneDrive folder, automatically creating the destination folder if it doesn't exist, renaming on conflict, and supporting large files via chunking.
Preview Drive ItemGenerates or retrieves a short-lived, permission-bound embeddable URL for a preview of a specific item.
Restore Deleted ItemTool to restore a deleted OneDrive driveItem (file or folder) from the recycle bin.
Search ItemsSearch OneDrive for files and folders by keyword.
Delete Drive FollowingTool to unfollow a driveItem by removing it from the user's followed items collection.
Update Drive Item MetadataTool to update the metadata of a specific item (file or folder) in OneDrive.
Update Drive Item PermissionsTool to update the roles of an existing permission on a OneDrive drive item.
Update File ContentTool to create an upload session for updating an existing file's content in OneDrive.

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

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

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.

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 One drive via MCP
  • python-dotenv loads environment variables

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

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

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

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=["one_drive"],
)

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

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 One drive 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

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 One drive 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=["one_drive"],
)

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 One drive operations."
    ),  
    tools=[composio_toolset],
)

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

Conclusion

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

Key takeaways:

  • The Tool Router approach dynamically routes requests to the appropriate One drive 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.

How to build One drive MCP Agent with another framework

FAQ

What are the differences in Tool Router MCP and One drive MCP?

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

Can I use Tool Router MCP with Google ADK?

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 One drive tools.

Can I manage the permissions and scopes for One drive while using Tool Router?

Yes, absolutely. You can configure which One drive 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.

How safe is my data with Composio Tool Router?

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 One drive data and credentials are handled as safely as possible.

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Letta
glean
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Agent.ai
Altera
DataStax
Entelligence
Rolai
Context
Letta
glean
HubSpot
Agent.ai
Altera
DataStax
Entelligence
Rolai

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