How to integrate Spotify MCP with Google ADK

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Introduction

This guide walks you through connecting Spotify to Google ADK using the Composio tool router. By the end, you'll have a working Spotify agent that can add these songs to my running playlist, check if i follow taylor swift, see if my friends follow my playlist, verify if i saved this album already through natural language commands.

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

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

TL;DR

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

The Spotify MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Spotify account. It provides structured and secure access to your playlists, music library, and playback controls, so your agent can perform actions like managing playlists, adding songs to your queue, checking saved tracks, and updating playlist details on your behalf.

  • Personalized playlist management: Let your agent add songs or podcasts to playlists, change playlist details like name or privacy settings, and keep your music organized just how you like it.
  • Playback control and queue updates: Direct your agent to add tracks or episodes to your current playback queue, helping you line up the perfect listening experience without lifting a finger.
  • Library checks and smart recommendations: Have your agent check if specific tracks, albums, shows, or audiobooks are already saved in your Spotify library, so you never add duplicates or miss out on favorites.
  • Social and follower insights: Ask your agent to check whether you or others are following certain artists, users, or playlists, making it easy to stay connected to your musical community.
  • Podcast and show management: Let your agent verify which podcast episodes or shows are in your library, ensuring you’re always up to date with your latest audio interests.

Supported Tools & Triggers

Tools
Triggers
Add items to playlistAdd one or more items to a user's playlist.
Add item to playback queueAdd an item to the end of the user's current playback queue.
Change playlist detailsChange a playlist's name and public/private state.
Check if user follows artists or usersCheck to see if the current user is following one or more artists or other spotify users.
Check if users follow playlistCheck to see if one or more spotify users are following a specified playlist.
Check user s saved albumsCheck if one or more albums is already saved in the current spotify user's 'your music' library.
Check user s saved audiobooksCheck if one or more audiobooks are already saved in the current spotify user's library.
Check user s saved episodesThis spotify api endpoint (in beta) checks if episodes are saved in a user's library.
Check user s saved showsCheck if one or more shows is already saved in the current spotify user's library.
Check user s saved tracksCheck if one or more tracks is already saved in the current spotify user's 'your music' library.
Create playlistCreate a playlist for a spotify user.
Follow artists or usersAdd the current user as a follower of one or more artists or other spotify users.
Follow playlistAdd the current user as a follower of a playlist.
Get a chapterGet spotify catalog information for a single audiobook chapter.
Get albumGet spotify catalog information for a single album.
Get album tracksGet spotify catalog information about an album’s tracks.
Get an audiobookGet spotify catalog information for a single audiobook.
Get artistGet spotify catalog information for a single artist identified by their unique spotify id.
Get artist s albumsGet spotify catalog information about an artist's albums.
Get artist s related artistsGet spotify catalog information about artists similar to a given artist.
Get artist s top tracksGet spotify catalog information about an artist's top tracks by country.
Get audiobook chaptersGet spotify catalog information about an audiobook's chapters.
Get available devicesGet information about a user’s available spotify connect devices.
Get available genre seedsRetrieve a list of available genres seed parameter values for [recommendations](/documentation/web-api/reference/get-recommendations).
Get available marketsGet the list of markets where spotify is available.
Get category s playlistsGet a list of spotify playlists tagged with a particular category.
Get currently playing trackGet the object currently being played on the user's spotify account.
Get current user s playlistsGet a list of the playlists owned or followed by the current spotify user.
Get current user s profileGet detailed profile information about the current user (including the current user's username).
Get episodeGet spotify catalog information for a single episode identified by its unique spotify id.
Get featured playlistsGet a list of spotify featured playlists (shown, for example, on a spotify player's 'browse' tab).
Get followed artistsGet the current user's followed artists.
Get new releasesGet a list of new album releases featured in spotify (shown, for example, on a spotify player’s “browse” tab).
Get playback stateGet information about the user’s current playback state, including track or episode, progress, and active device.
Get playlistGet a playlist owned by a spotify user.
Get playlist cover imageGet the current image associated with a specific playlist.
Get playlist itemsGet full details of the items of a playlist owned by a spotify user.
Get recently played tracksGet tracks from the current user's recently played tracks.
Get recommendationsRecommendations are based on seed entity data, matched with similar artists and tracks.
Get several albumsGet spotify catalog information for multiple albums identified by their spotify ids.
Get several artistsGet spotify catalog information for several artists based on their spotify ids.
Get several audiobooksGet spotify catalog information for several audiobooks identified by their spotify ids.
Get several browse categoriesGet a list of categories used to tag items in spotify (on, for example, the spotify player’s “browse” tab).
Get several chaptersGet spotify catalog information for several audiobook chapters identified by their spotify ids.
Get several episodesGet spotify catalog information for several episodes based on their spotify ids.
Get several showsGet spotify catalog information for several shows based on their spotify ids.
Get several tracksGet spotify catalog information for multiple tracks based on their spotify ids.
Get several tracks audio featuresGet audio features for multiple tracks based on their spotify ids.
Get showGet spotify catalog information for a single show identified by its unique spotify id.
Get show episodesGet spotify catalog information about an show’s episodes.
Get single browse categoryGet a single category used to tag items in spotify (on, for example, the spotify player’s “browse” tab).
Get the user s queueGet the list of objects that make up the user's queue.
Get trackGet spotify catalog information for a single track identified by its unique spotify id.
Get track s audio analysisGet a low-level audio analysis for a track in the spotify catalog.
Get track s audio featuresGet audio feature information for a single track identified by its unique spotify id.
Get user s playlistsGet a list of the playlists owned or followed by a spotify user.
Get user s profileGet public profile information about a spotify user.
Get user s saved albumsGet a list of the albums saved in the current spotify user's 'your music' library.
Get user s saved audiobooksGet a list of the audiobooks saved in the current spotify user's 'your music' library.
Get user s saved episodesThis api endpoint, currently in beta, allows retrieving episodes saved in a spotify user's library.
Get user s saved showsGet a list of shows saved in the current spotify user's library.
Get user s saved tracksGet a list of the songs saved in the current spotify user's 'your music' library.
Get user s top artistsGet the current user's top artists based on calculated affinity.
Get user s top tracksGet the current user's top tracks based on calculated affinity.
Pause playbackPause playback on the user's account.
Remove playlist itemsRemove one or more items from a user's playlist.
Remove users saved albumsRemove one or more albums from the current user's 'your music' library.
Remove user s saved audiobooksRemove one or more audiobooks from the spotify user's library.
Remove user s saved episodesThis api endpoint, currently in beta, allows for the removal of episodes from a user's library and may change without notice.
Remove user s saved showsDelete one or more shows from current spotify user's library.
Remove user s saved tracksRemove one or more tracks from the current user's 'your music' library.
Save albums for current userSave one or more albums to the current user's 'your music' library.
Save audiobooks for current userSave one or more audiobooks to the current spotify user's library.
Save episodes for current userThis api endpoint, currently in beta, allows saving episodes to a user's library.
Save shows for current userSave one or more shows to current spotify user's library.
Save tracks for current userSave one or more tracks to the current user's 'your music' library.
Search for itemGet spotify catalog information about albums, artists, playlists, tracks, shows, episodes or audiobooks that match a keyword string.
Seek to positionSeeks to the given position in the user’s currently playing track.
Set playback volumeSet the volume for the user’s current playback device.
Set repeat modeSet the repeat mode for the user's playback.
Skip to nextSkips to next track in the user’s queue.
Skip to previousSkips to previous track in the user’s queue.
Start resume playbackStart a new context or resume current playback on the user's active device.
Toggle playback shuffleToggle shuffle on or off for user’s playback.
Transfer playbackTransfer playback to a new device and optionally begin playback.
Unfollow artists or usersRemove the current user as a follower of one or more artists or other spotify users.
Unfollow playlistRemove the current user as a follower of a playlist.
Update playlist itemsTo modify a playlist, use rearrange (with `range start`, `insert before`, `range length`, `snapshot id`) or replace items (`uris` in body/query).

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

What is Tool Router?

Composio's Tool Router 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 Tool Router

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

How the Tool Router works

The Tool Router 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 Spotify 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=["spotify"],
)

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 Spotify 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 Spotify and Google ADK:

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=["spotify"],
)

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

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

Conclusion

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

Key takeaways:

  • The Tool Router approach dynamically routes requests to the appropriate Spotify 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 Spotify MCP Agent with another framework

FAQ

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

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

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

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

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