How to integrate Spotify MCP with Pydantic AI

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Introduction

This guide walks you through connecting Spotify to Pydantic AI 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 Pydantic AI 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:
  • How to set up your Composio API key and User ID
  • How to create a Composio Tool Router session for Spotify
  • How to attach an MCP Server to a Pydantic AI agent
  • How to stream responses and maintain chat history
  • How to build a simple REPL-style chat interface to test your Spotify workflows

What is Pydantic AI?

Pydantic AI is a Python framework for building AI agents with strong typing and validation. It leverages Pydantic's data validation capabilities to create robust, type-safe AI applications.

Key features include:

  • Type Safety: Built on Pydantic for automatic data validation
  • MCP Support: Native support for Model Context Protocol servers
  • Streaming: Built-in support for streaming responses
  • Async First: Designed for async/await patterns

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:
  • Python 3.9 or higher
  • A Composio account with an active API key
  • Basic familiarity with Python and async programming

Getting API Keys for OpenAI and Composio

OpenAI API Key
  • Go to the OpenAI dashboard and create an API key. You'll need credits to use the models, or you can connect to another model provider.
  • Keep the API key safe.
Composio API Key
  • Log in to the Composio dashboard.
  • Navigate to your API settings and generate a new API key.
  • Store this key securely as you'll need it for authentication.

Install dependencies

bash
pip install composio pydantic-ai python-dotenv

Install the required libraries.

What's happening:

  • composio connects your agent to external SaaS tools like Spotify
  • pydantic-ai lets you create structured AI agents with tool support
  • python-dotenv loads your environment variables securely from a .env file

Set up environment variables

bash
COMPOSIO_API_KEY=your_composio_api_key_here
USER_ID=your_user_id_here
OPENAI_API_KEY=your_openai_api_key

Create a .env file in your project root.

What's happening:

  • COMPOSIO_API_KEY authenticates your agent to Composio's API
  • USER_ID associates your session with your account for secure tool access
  • OPENAI_API_KEY to access OpenAI LLMs

Import dependencies

python
import asyncio
import os
from dotenv import load_dotenv
from composio import Composio
from pydantic_ai import Agent
from pydantic_ai.mcp import MCPServerStreamableHTTP

load_dotenv()
What's happening:
  • We load environment variables and import required modules
  • Composio manages connections to Spotify
  • MCPServerStreamableHTTP connects to the Spotify MCP server endpoint
  • Agent from Pydantic AI lets you define and run the AI assistant

Create a Tool Router Session

python
async def main():
    api_key = os.getenv("COMPOSIO_API_KEY")
    user_id = os.getenv("USER_ID")
    if not api_key or not user_id:
        raise RuntimeError("Set COMPOSIO_API_KEY and USER_ID in your environment")

    # Create a Composio Tool Router session for Spotify
    composio = Composio(api_key=api_key)
    session = composio.create(
        user_id=user_id,
        toolkits=["spotify"],
    )
    url = session.mcp.url
    if not url:
        raise ValueError("Composio session did not return an MCP URL")
What's happening:
  • We're creating a Tool Router session that gives your agent access to Spotify tools
  • The create method takes the user ID and specifies which toolkits should be available
  • The returned session.mcp.url is the MCP server URL that your agent will use

Initialize the Pydantic AI Agent

python
# Attach the MCP server to a Pydantic AI Agent
spotify_mcp = MCPServerStreamableHTTP(url, headers={"x-api-key": COMPOSIO_API_KEY})
agent = Agent(
    "openai:gpt-5",
    toolsets=[spotify_mcp],
    instructions=(
        "You are a Spotify assistant. Use Spotify tools to help users "
        "with their requests. Ask clarifying questions when needed."
    ),
)
What's happening:
  • The MCP client connects to the Spotify endpoint
  • The agent uses GPT-5 to interpret user commands and perform Spotify operations
  • The instructions field defines the agent's role and behavior

Build the chat interface

python
# Simple REPL with message history
history = []
print("Chat started! Type 'exit' or 'quit' to end.\n")
print("Try asking the agent to help you with Spotify.\n")

while True:
    user_input = input("You: ").strip()
    if user_input.lower() in {"exit", "quit", "bye"}:
        print("\nGoodbye!")
        break
    if not user_input:
        continue

    print("\nAgent is thinking...\n", flush=True)

    async with agent.run_stream(user_input, message_history=history) as stream_result:
        collected_text = ""
        async for chunk in stream_result.stream_output():
            text_piece = None
            if isinstance(chunk, str):
                text_piece = chunk
            elif hasattr(chunk, "delta") and isinstance(chunk.delta, str):
                text_piece = chunk.delta
            elif hasattr(chunk, "text"):
                text_piece = chunk.text
            if text_piece:
                collected_text += text_piece
        result = stream_result

    print(f"Agent: {collected_text}\n")
    history = result.all_messages()
What's happening:
  • The agent reads input from the terminal and streams its response
  • Spotify API calls happen automatically under the hood
  • The model keeps conversation history to maintain context across turns

Run the application

python
if __name__ == "__main__":
    asyncio.run(main())
What's happening:
  • The asyncio loop launches the agent and keeps it running until you exit

Complete Code

Here's the complete code to get you started with Spotify and Pydantic AI:

import asyncio
import os
from dotenv import load_dotenv
from composio import Composio
from pydantic_ai import Agent
from pydantic_ai.mcp import MCPServerStreamableHTTP

load_dotenv()

async def main():
    api_key = os.getenv("COMPOSIO_API_KEY")
    user_id = os.getenv("USER_ID")
    if not api_key or not user_id:
        raise RuntimeError("Set COMPOSIO_API_KEY and USER_ID in your environment")

    # Create a Composio Tool Router session for Spotify
    composio = Composio(api_key=api_key)
    session = composio.create(
        user_id=user_id,
        toolkits=["spotify"],
    )
    url = session.mcp.url
    if not url:
        raise ValueError("Composio session did not return an MCP URL")

    # Attach the MCP server to a Pydantic AI Agent
    spotify_mcp = MCPServerStreamableHTTP(url, headers={"x-api-key": COMPOSIO_API_KEY})
    agent = Agent(
        "openai:gpt-5",
        toolsets=[spotify_mcp],
        instructions=(
            "You are a Spotify assistant. Use Spotify tools to help users "
            "with their requests. Ask clarifying questions when needed."
        ),
    )

    # Simple REPL with message history
    history = []
    print("Chat started! Type 'exit' or 'quit' to end.\n")
    print("Try asking the agent to help you with Spotify.\n")

    while True:
        user_input = input("You: ").strip()
        if user_input.lower() in {"exit", "quit", "bye"}:
            print("\nGoodbye!")
            break
        if not user_input:
            continue

        print("\nAgent is thinking...\n", flush=True)

        async with agent.run_stream(user_input, message_history=history) as stream_result:
            collected_text = ""
            async for chunk in stream_result.stream_output():
                text_piece = None
                if isinstance(chunk, str):
                    text_piece = chunk
                elif hasattr(chunk, "delta") and isinstance(chunk.delta, str):
                    text_piece = chunk.delta
                elif hasattr(chunk, "text"):
                    text_piece = chunk.text
                if text_piece:
                    collected_text += text_piece
            result = stream_result

        print(f"Agent: {collected_text}\n")
        history = result.all_messages()

if __name__ == "__main__":
    asyncio.run(main())

Conclusion

You've built a Pydantic AI agent that can interact with Spotify through Composio's Tool Router. With this setup, your agent can perform real Spotify actions through natural language. You can extend this further by:
  • Adding other toolkits like Gmail, HubSpot, or Salesforce
  • Building a web-based chat interface around this agent
  • Using multiple MCP endpoints to enable cross-app workflows (for example, Gmail + Spotify for workflow automation)
This architecture makes your AI agent "agent-native", able to securely use APIs in a unified, composable way without custom integrations.

How to build Spotify MCP Agent with another framework

OpenAI Agents SDK

OpenAI Agents SDK

Use Spotify MCP with OpenAI Agents SDK

Claude Agent SDK

Claude Agent SDK

Use Spotify MCP with Claude Agent SDK

Google ADK

Google ADK

Use Spotify MCP with Google ADK

LangChain

LangChain

Use Spotify MCP with LangChain

Vercel AI SDK

Vercel AI SDK

Use Spotify MCP with Vercel AI SDK

Mastra AI

Mastra AI

Use Spotify MCP with Mastra AI

LlamaIndex

LlamaIndex

Use Spotify MCP with LlamaIndex

CrewAI

CrewAI

Use Spotify MCP with CrewAI

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 Pydantic AI?

Yes, you can. Pydantic AI 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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