Eventbrite with LangChain

How to integrate Eventbrite MCP with LangChain

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Introduction Also integrate Eventbrite with TL;DR What is LangChain What is the Eventbrite MCP server Supported Tools & Triggers Creating MCP Server - Stand-alone vs Composio SDK Step-by-step Guide Complete Code Conclusion How to build Eventbrite MCP Agent with another framework Explore Other Toolkits FAQ

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Introduction

This guide walks you through connecting Eventbrite to LangChain using the Composio tool router. By the end, you'll have a working Eventbrite agent that can list all available eventbrite event categories, show event formats for online conferences, find subcategories under the 'music' category through natural language commands.

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

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

Also integrate Eventbrite with

OpenAI Agents SDK Claude Agent SDK Claude Code Claude Cowork Codex OpenClaw Hermes CLI Google ADK Vercel AI SDK Mastra AI LlamaIndex CrewAI

TL;DR

Here's what you'll learn:

Get and set up your OpenAI and Composio API keys
Connect your Eventbrite project to Composio
Create a Tool Router MCP session for Eventbrite
Initialize an MCP client and retrieve Eventbrite tools
Build a LangChain agent that can interact with Eventbrite
Set up an interactive chat interface for testing

What is LangChain?

LangChain is a framework for developing applications powered by language models. It provides tools and abstractions for building agents that can reason, use tools, and maintain conversation context.

Key features include:

Agent Framework: Build agents that can use tools and make decisions
MCP Integration: Connect to external services through Model Context Protocol adapters
Memory Management: Maintain conversation history across interactions
Multi-Provider Support: Works with OpenAI, Anthropic, and other LLM providers

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

The Eventbrite MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Eventbrite account. It provides structured and secure access to your event management tools, so your agent can retrieve event categories, formats, and subcategories—making it simple to plan, organize, and customize events programmatically.

Discover event categories: Instantly access and list all available Eventbrite categories, helping you select the most relevant topics for your events.
Explore event formats: Let your agent fetch the variety of formats supported by Eventbrite, such as in-person, virtual, or hybrid, to tailor event structure on the fly.
Retrieve event subcategories: Quickly pull detailed subcategory options based on your selected category, ensuring precise event classification and audience targeting.
Localized event metadata retrieval: Enable your agent to localize categories, formats, and subcategories based on specific regions or languages, making global event planning seamless.

Supported Tools & Triggers

Tools

Add Ticket Class to GroupsTool to add a ticket class to one or more explicitly specified ticket groups for an Eventbrite event.

Add Ticket to Group by OrganizationTool to add a ticket class to ticket groups using organization and event IDs.

Calculate Price For ItemTool to calculate Eventbrite fees for a given ticket price.

Cancel EventTool to cancel an Eventbrite event.

Copy EventTool to copy an Eventbrite event and create a duplicate with a new Event ID.

Create Access CodeTool to create a new access code for an Eventbrite event.

Create Checkout SettingsTool to create checkout settings for an Eventbrite organization.

Create Custom QuestionTool to create a custom question for an Eventbrite event.

Create DiscountTool to create a new discount for an Eventbrite organization.

Create EventTool to create a new Eventbrite event.

Create Event ScheduleTool to create an event schedule for a series parent event.

Create Inventory TierTool to create a new inventory tier for an Eventbrite event.

Create OrganizerTool to create a new organizer for an Eventbrite organization.

Create Ticket ClassTool to create a new ticket class for an Eventbrite event.

Create Ticket GroupTool to create a new ticket group for an Eventbrite organization.

Create Tracking BeaconTool to create a tracking beacon for an Eventbrite event or user.

Create VenueTool to create a new venue under an organization in Eventbrite.

Create WebhookTool to create a new webhook for an Eventbrite organization.

Delete Default QuestionTool to deactivate a canned question for an event.

Delete DiscountTool to delete a discount from Eventbrite.

Delete EventTool to delete an Eventbrite event.

Delete Inventory TierTool to mark an existing inventory tier as deleted for an Eventbrite event.

Delete Ticket ClassTool to delete a ticket class from an Eventbrite event by its ID.

Delete Ticket GroupTool to delete a ticket group by changing its status to deleted.

Get Access CodeTool to retrieve a specific access code by ID for an Eventbrite event.

Get Organization AssortmentTool to retrieve assortment information for a specific organization.

Get Attendee ReportTool to retrieve an attendee report for events in an Eventbrite organization.

Get Capacity TierTool to retrieve the capacity tier for an Eventbrite event.

Get Category by IDTool to retrieve a specific category by ID.

Get Checkout SettingsTool to retrieve checkout settings for a specific Eventbrite organization.

Get Default QuestionTool to retrieve a specific default (canned) question for an Eventbrite event by Event ID and Question ID.

Get DiscountTool to retrieve a discount by its ID from Eventbrite.

Get Display SettingsTool to retrieve display settings for a specific Eventbrite event.

Get EventTool to retrieve detailed information for a specific Eventbrite event by ID.

Get Event CategoriesTool to retrieve event categories.

Get Event DescriptionTool to retrieve the full HTML description for an Eventbrite event.

Get Event FormatsTool to list event formats.

Get Event SubcategoriesTool to list all event subcategories.

Get FormatTool to retrieve a format by format ID.

Get Inventory TierTool to retrieve an Inventory Tier by ID for an Event.

Get Current UserTool to retrieve the authenticated user's account information.

Get Media UploadTool to retrieve information on a Media image upload.

Get Organizer by IDTool to retrieve an organizer by organizer ID from Eventbrite.

Get Sales ReportTool to retrieve a sales report by Event ID or Event status for an organization.

Get Event SeriesTool to retrieve a parent Event Series by Event Series ID.

Get Structured ContentTool to retrieve structured content for an Eventbrite event.

Get Structured Content Edit VersionTool to retrieve the latest working version of structured content for an event.

Get Subcategory by IDTool to retrieve a specific subcategory by ID.

Get Ticket ClassTool to retrieve a specific ticket class by ID for an Eventbrite event.

Get Ticket GroupTool to retrieve a ticket group by its ID from Eventbrite.

Get Tracking BeaconTool to retrieve a tracking beacon by ID from Eventbrite.

Get User by IDTool to retrieve information about a user by user ID.

Get Venue by IDTool to retrieve detailed information for a specific venue by venue ID.

List Access CodesTool to retrieve all access codes for an Eventbrite event.

List Custom QuestionsTool to retrieve custom questions configured for an Eventbrite event.

List Default QuestionsTool to retrieve default (canned) questions for an Eventbrite event by Event ID.

List Event AttendeesTool to retrieve the list of attendees for an Eventbrite event.

List Event OrdersTool to list orders for a specific Eventbrite event.

List Inventory TiersTool to retrieve inventory tiers for an Eventbrite event.

List Organization EventsTool to list events owned by a specific Eventbrite organization.

List Organization MembersTool to list members of an Eventbrite organization by organization ID.

List Organization OrdersTool to list orders placed for events owned by a specific Eventbrite organization.

List Organization RolesTool to list roles within a specific Eventbrite organization by organization ID.

List Organization WebhooksTool to list all webhooks configured for a specific Eventbrite organization.

List Organization AttendeesTool to list attendees across all events owned by an Eventbrite organization.

List Organization OrganizersTool to list organizers belonging to a specific Eventbrite organization.

List Organization VenuesTool to list venues owned by a specific Eventbrite organization.

List PricingTool to list available pricing fee rates for a specific currency and country.

List Series EventsTool to list all events in an Eventbrite event series by series ID.

List Ticket ClassesTool to list ticket classes for a specific Eventbrite event by event ID.

List Ticket Classes For SaleTool to list ticket classes available for sale for a specific Eventbrite event.

List Organization Ticket GroupsTool to list ticket groups for a specific Eventbrite organization.

List Tracking BeaconsTool to list tracking beacons for an Eventbrite organization by organization ID.

List User OrdersTool to list orders for a specific Eventbrite user.

List User OrganizationsTool to list organizations the authenticated user belongs to.

List Organizations by User IDTool to list organizations by user ID.

List Venue EventsTool to list all events at a specific Eventbrite venue by venue ID.

Publish EventTool to publish an Eventbrite event.

Retrieve MediaTool to retrieve media information by ID.

Search Discounts by OrganizationTool to search and list discounts by organization ID.

Set Structured ContentTool to set structured content for an Eventbrite event by version.

Unpublish EventTool to unpublish an Eventbrite event.

Update Access CodeTool to update an existing access code for an Eventbrite event.

Update Organization AssortmentTool to update the assortment plan for a specific organization.

Update Capacity TierTool to update the capacity tier for an Eventbrite event.

Update Default QuestionTool to update a default (canned) question for an Eventbrite event.

Update DiscountTool to update a discount by its ID in Eventbrite.

Update Display SettingsTool to update display settings for a specific Eventbrite event.

Update EventTool to update an Eventbrite event by ID.

Update Inventory TierTool to update an existing Inventory Tier by ID for an Event.

Update OrganizerTool to update an Eventbrite organizer by ID.

Update Ticket Buyer SettingsTool to update ticket buyer settings for an Eventbrite event.

Update Ticket ClassTool to update a ticket class for an Eventbrite event.

Update Ticket GroupTool to update a ticket group by its ID in Eventbrite.

Update VenueTool to update a venue's details by venue ID.

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:

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

Step-by-step Guide

Prerequisites

Before starting this tutorial, make sure you have:

Python 3.10 or higher installed on your system
A Composio account with an API key
An OpenAI 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

pip install composio-langchain langchain-mcp-adapters langchain python-dotenv

Install the required packages for LangChain with MCP support.

What's happening:

composio-langchain provides Composio integration for LangChain
langchain-mcp-adapters enables MCP client connections
langchain is the core agent framework
python-dotenv loads environment variables

Set up environment variables

bash

COMPOSIO_API_KEY=your_composio_api_key_here
COMPOSIO_USER_ID=your_composio_user_id_here
OPENAI_API_KEY=your_openai_api_key_here

Create a .env file in your project root.

What's happening:

COMPOSIO_API_KEY authenticates your requests to Composio's API
COMPOSIO_USER_ID identifies the user for session management
OPENAI_API_KEY enables access to OpenAI's language models

Import dependencies

from langchain_mcp_adapters.client import MultiServerMCPClient
from langchain.agents import create_agent
from dotenv import load_dotenv
from composio import Composio
import asyncio
import os

load_dotenv()

What's happening:

We're importing LangChain's MCP adapter and Composio SDK
The dotenv import loads environment variables from your .env file
This setup prepares the foundation for connecting LangChain with Eventbrite functionality through MCP

Initialize Composio client

async def main():
    composio = Composio(api_key=os.getenv("COMPOSIO_API_KEY"))

    if not os.getenv("COMPOSIO_API_KEY"):
        raise ValueError("COMPOSIO_API_KEY is not set")
    if not os.getenv("COMPOSIO_USER_ID"):
        raise ValueError("COMPOSIO_USER_ID is not set")

What's happening:

We're loading the COMPOSIO_API_KEY from environment variables and validating it exists
Creating a Composio instance that will manage our connection to Eventbrite tools
Validating that COMPOSIO_USER_ID is also set before proceeding

Create a Tool Router session

# Create Tool Router session for Eventbrite
session = composio.create(
    user_id=os.getenv("COMPOSIO_USER_ID"),
    toolkits=['eventbrite']
)

url = session.mcp.url

What's happening:

We're creating a Tool Router session that gives your agent access to Eventbrite 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
This approach allows the agent to dynamically load and use Eventbrite tools as needed

Configure the agent with the MCP URL

client = MultiServerMCPClient({
    "eventbrite-agent": {
        "transport": "streamable_http",
        "url": session.mcp.url,
        "headers": {
            "x-api-key": os.getenv("COMPOSIO_API_KEY")
        }
    }
})

tools = await client.get_tools()

agent = create_agent("gpt-5", tools)

What's happening:

We're creating a MultiServerMCPClient that connects to our Eventbrite MCP server via HTTP
The client is configured with a name and the URL from our Tool Router session
get_tools() retrieves all available Eventbrite tools that the agent can use
We're creating a LangChain agent using the GPT-5 model

Set up interactive chat interface

conversation_history = []

print("Chat started! Type 'exit' or 'quit' to end the conversation.\n")
print("Ask any Eventbrite related question or task to the agent.\n")

while True:
    user_input = input("You: ").strip()

    if user_input.lower() in ['exit', 'quit', 'bye']:
        print("\nGoodbye!")
        break

    if not user_input:
        continue

    conversation_history.append({"role": "user", "content": user_input})
    print("\nAgent is thinking...\n")

    response = await agent.ainvoke({"messages": conversation_history})
    conversation_history = response['messages']
    final_response = response['messages'][-1].content
    print(f"Agent: {final_response}\n")

What's happening:

We initialize an empty conversation_history list to maintain context across interactions
A while loop continuously accepts user input from the command line
When a user types a message, it's added to the conversation history and sent to the agent
The agent processes the request using the ainvoke() method with the full conversation history
Users can type 'exit', 'quit', or 'bye' to end the chat session gracefully

Run the application

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

What's happening:

We call the main() function using asyncio.run() to start the application

Complete Code

Here's the complete code to get you started with Eventbrite and LangChain:

from langchain_mcp_adapters.client import MultiServerMCPClient
from langchain.agents import create_agent
from dotenv import load_dotenv
from composio import Composio
import asyncio
import os

load_dotenv()

async def main():
    composio = Composio(api_key=os.getenv("COMPOSIO_API_KEY"))
    
    if not os.getenv("COMPOSIO_API_KEY"):
        raise ValueError("COMPOSIO_API_KEY is not set")
    if not os.getenv("COMPOSIO_USER_ID"):
        raise ValueError("COMPOSIO_USER_ID is not set")
    
    session = composio.create(
        user_id=os.getenv("COMPOSIO_USER_ID"),
        toolkits=['eventbrite']
    )

    url = session.mcp.url
    
    client = MultiServerMCPClient({
        "eventbrite-agent": {
            "transport": "streamable_http",
            "url": url,
            "headers": {
                "x-api-key": os.getenv("COMPOSIO_API_KEY")
            }
        }
    })
    
    tools = await client.get_tools()
  
    agent = create_agent("gpt-5", tools)
    
    conversation_history = []
    
    print("Chat started! Type 'exit' or 'quit' to end the conversation.\n")
    print("Ask any Eventbrite related question or task to the agent.\n")
    
    while True:
        user_input = input("You: ").strip()
        
        if user_input.lower() in ['exit', 'quit', 'bye']:
            print("\nGoodbye!")
            break
        
        if not user_input:
            continue
        
        conversation_history.append({"role": "user", "content": user_input})
        print("\nAgent is thinking...\n")
        
        response = await agent.ainvoke({"messages": conversation_history})
        conversation_history = response['messages']
        final_response = response['messages'][-1].content
        print(f"Agent: {final_response}\n")

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

Conclusion

You've successfully built a LangChain agent that can interact with Eventbrite through Composio's Tool Router.

Key features of this implementation:

Dynamic tool loading through Composio's Tool Router
Conversation history maintenance for context-aware responses
Async Python provides clean, efficient execution of agent workflows

You can extend this further by adding error handling, implementing specific business logic, or integrating additional Composio toolkits to create multi-app workflows.

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Codex

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OpenClaw

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CLI

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Google ADK

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FAQ

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

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

Can I use Tool Router MCP with LangChain?

Yes, you can. LangChain 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 Eventbrite tools.

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

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

Used by agents from

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We handle tool reliability, observability, and security so you never have to second-guess an agent action.

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Harsha GaddipatiCo-founder, Slashy

Karan skipped his own birthday party to fix our critical issue. It was 10 pm and he diverted his Waymo to help us instead. This really sets the bar, shows you the commitment you need to have when users rely on your software.

Abhi AryaCo-founder, Opennote

A lot of students tell us that the moment their connected tools start talking to each other inside Opennote feels almost magical. The agent just knows them, and it has immensely helped in keeping new users on the platform.

Nirman DaveCEO, Zams

We chose Composio over Pipedream because it delivered depth where it mattered. It supported niche tools and tricky edge cases that other platforms simply ignored. Giving us confidence to scale without compromising.

Ryan YuFounder, Extra Thursday

As a solo builder, shipping fast is life or death. The only way I can outcompete incumbents is by outmanoeuvring them. Getting bogged down in the complexities of managing agent auth would have been a death sentence for Extra Thursday.

Tomisin JenrolaFounder & CEO, SwarmZero

Before partnering with Composio, adding tool integrations was a slow, resource-intensive process. Each integration could take weeks or months of engineering time, and maintaining them meant constantly keeping up with API changes.

Jerome LeclancheCo-Founder, Ingram Technologies

With hands-on help from their founder, we integrated Gmail and Google Drive in just 30 minutes. This level of personal support and commitment is exactly what startups should strive for.

Harsha GaddipatiCo-founder, Slashy

Abhi AryaCo-founder, Opennote

Nirman DaveCEO, Zams

Ryan YuFounder, Extra Thursday

Tomisin JenrolaFounder & CEO, SwarmZero

Jerome LeclancheCo-Founder, Ingram Technologies

With hands-on help from their founder, we integrated Gmail and Google Drive in just 30 minutes. This level of personal support and commitment is exactly what startups should strive for.

Harsha GaddipatiCo-founder, Slashy

Abhi AryaCo-founder, Opennote

Nirman DaveCEO, Zams

Ryan YuFounder, Extra Thursday

Tomisin JenrolaFounder & CEO, SwarmZero

Jerome LeclancheCo-Founder, Ingram Technologies

With hands-on help from their founder, we integrated Gmail and Google Drive in just 30 minutes. This level of personal support and commitment is exactly what startups should strive for.

How to integrate Eventbrite MCP with LangChain

Table of Contents

Connect Eventbrite without Auth hassles

Introduction

Also integrate Eventbrite with

TL;DR

What is LangChain?

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

Supported Tools & Triggers

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

What is Composio SDK?

How the Composio SDK works

Step-by-step Guide

Prerequisites

Getting API Keys for OpenAI and Composio

Install dependencies

Set up environment variables

Import dependencies

Initialize Composio client

Create a Tool Router session

Configure the agent with the MCP URL

Set up interactive chat interface

Run the application

Complete Code

Conclusion

How to build Eventbrite MCP Agent with another framework

OpenAI Agents SDK

Claude Agent SDK

Claude Code

Claude Cowork

Codex

OpenClaw

Hermes

CLI

Google ADK

Vercel AI SDK

Mastra AI

LlamaIndex

CrewAI

Explore Other Toolkits

Reddit

Facebook

Linkedin

FAQ

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

Can I use Tool Router MCP with LangChain?

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

How safe is my data with Composio Tool Router?

Used by agents from

Never worry about agent reliability