How to integrate Youtube MCP with Google ADK

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Introduction

This guide walks you through connecting Youtube to Google ADK using the Composio tool router. By the end, you'll have a working Youtube agent that can list your most recent uploaded videos, get subscriber count for your channel, search youtube for trending tutorials through natural language commands.

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

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

Also integrate Youtube with

TL;DR

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

The Youtube MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Youtube account. It provides structured and secure access to your channel data, so your agent can perform actions like searching videos, managing playlists, retrieving channel insights, and handling subscriptions on your behalf.

  • Channel activity monitoring: Let your agent fetch and summarize recent channel activities, including uploads, likes, playlist additions, and more, to keep you up to date at a glance.
  • Automated video and playlist management: Easily list videos from any channel, retrieve your own playlists, and organize your content—all through AI-driven commands.
  • Channel analytics and statistics: Ask your agent to pull detailed channel metrics such as subscriber counts, total views, or video counts for quick reporting and insights.
  • Subscription management: Have your agent list your current subscriptions or even subscribe you to new channels based on your interests or instructions.
  • Search and caption handling: Empower your agent to search YouTube for videos, channels, or playlists, as well as retrieve and download caption tracks for accessible viewing and content repurposing.

Supported Tools & Triggers

Tools
Triggers
Add Video to PlaylistTool to add a video to a playlist by inserting a playlist item.
Insert Channel SectionTool to create a new channel section for the authenticated user's YouTube channel.
Insert Comment ReplyTool to create a reply to an existing YouTube comment.
Create PlaylistTool to create a new YouTube playlist on the authenticated user's channel.
Delete Channel SectionTool to delete a YouTube channel section.
Delete CommentTool to delete a YouTube comment owned by the authenticated user or channel.
Delete PlaylistTool to delete a YouTube playlist owned by the authenticated user/channel.
Delete Playlist ItemTool to delete a playlist item (remove a video from a playlist).
Delete VideoTool to delete a YouTube video owned by the authenticated user/channel.
Get Channel ActivitiesGets recent activities from a YouTube channel including video uploads, playlist additions, likes, and other channel events.
Get channel ID by handleRetrieves the YouTube Channel ID for a specific YouTube channel handle.
Get Channel StatisticsGets detailed statistics for YouTube channels including subscriber counts, view counts, and video counts.
Video Details BatchRetrieves multiple YouTube video resource parts in a single batch call.
Get Video RatingRetrieves the ratings that the authorized user gave to a list of specified videos.
List captionsRetrieves a list of caption tracks for a YouTube video.
List Channel SectionsTool to retrieve channel sections from YouTube.
List channel videosLists videos from a specified YouTube channel.
List CommentsList individual comments from YouTube videos.
List Comment ThreadsTool to retrieve comment threads from YouTube videos or channels matching API request parameters.
List I18n LanguagesReturns a list of application languages that the YouTube website supports.
List I18n RegionsTool to retrieve a list of content regions that the YouTube website supports.
List Live Chat MessagesTool to list live chat messages for a specific chat.
List Playlist ImagesTool to retrieve playlist images associated with a specific playlist.
List Playlist ItemsTool to list videos in a playlist, with pagination support.
List Super Chat EventsLists Super Chat events for a channel, showing supporter purchases during live streams.
List user playlistsRetrieves playlists owned by the authenticated user, implicitly using mine=True.
List user subscriptionsRetrieves the authenticated user's YouTube channel subscriptions, allowing specification of response parts and pagination.
List Video Abuse Report ReasonsTool to retrieve a list of abuse report reasons that can be used to report abusive videos on YouTube.
List Video CategoriesTool to list YouTube video categories that can be associated with videos.
Download YouTube caption trackDownloads a specific YouTube caption track, which must be owned by the authenticated user, and returns its content as text.
Multipart upload videoUploads a video to YouTube using multipart upload in a single request.
Post Comment on VideoTool to post a new top-level comment on a YouTube video.
Rate VideoTool to add a like or dislike rating to a YouTube video, or remove an existing rating.
Report Video for AbuseTool to report a YouTube video for containing abusive content.
Search YouTubeSearches YouTube for videos, channels, or playlists using a query term, returning the raw API response.
Set Comment Moderation StatusTool to set the moderation status of one or more YouTube comments.
Subscribe to channelSubscribes the authenticated user to a specified YouTube channel, identified by its unique `channelId` which must be valid and existing.
Unsubscribe from channelTool to unsubscribe the authenticated user from a YouTube channel by deleting a subscription.
Update caption trackUpdates a YouTube caption track's metadata such as name, language, or draft status.
Update channelUpdates a channel's metadata including branding settings and localizations.
Update Channel SectionTool to update an existing YouTube channel section by ID.
Update CommentTool to modify the text of an existing YouTube comment.
Update PlaylistTool to modify an existing YouTube playlist's metadata (title, description, privacy status).
Update Playlist ItemTool to modify a playlist item's properties such as position or note.
Update thumbnailSets the custom thumbnail for a YouTube video using an image from a URL.
Update videoUpdates metadata for a YouTube video identified by videoId, which must exist; an empty list for tags removes all existing tags.
Upload videoUploads a video from a local file path to a YouTube channel; the video file must be in a YouTube-supported format.

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 Youtube 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=["youtube"],
)

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 Youtube 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 Youtube 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=["youtube"],
)

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 Youtube operations."
    ),  
    tools=[composio_toolset],
)

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

Conclusion

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

Key takeaways:

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

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FAQ

What are the differences in Tool Router MCP and Youtube MCP?

With a standalone Youtube MCP server, the agents and LLMs can only access a fixed set of Youtube tools tied to that server. However, with the Composio Tool Router, agents can dynamically load tools from Youtube 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 Youtube tools.

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

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

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