# How to integrate Eventzilla MCP with Pydantic AI ```json { "title": "How to integrate Eventzilla MCP with Pydantic AI", "toolkit": "Eventzilla", "toolkit_slug": "eventzilla", "framework": "Pydantic AI", "framework_slug": "pydantic-ai", "url": "https://composio.dev/toolkits/eventzilla/framework/pydantic-ai", "markdown_url": "https://composio.dev/toolkits/eventzilla/framework/pydantic-ai.md", "updated_at": "2026-05-12T10:10:49.426Z" } ``` ## Introduction This guide walks you through connecting Eventzilla to Pydantic AI using the Composio tool router. By the end, you'll have a working Eventzilla agent that can list all upcoming events for this month, show me attendees for your latest event, find all events in the 'conference' category through natural language commands. This guide will help you understand how to give your Pydantic AI agent real control over a Eventzilla account through Composio's Eventzilla MCP server. Before we dive in, let's take a quick look at the key ideas and tools involved. ## Also integrate Eventzilla with - [OpenAI Agents SDK](https://composio.dev/toolkits/eventzilla/framework/open-ai-agents-sdk) - [Claude Agent SDK](https://composio.dev/toolkits/eventzilla/framework/claude-agents-sdk) - [Claude Code](https://composio.dev/toolkits/eventzilla/framework/claude-code) - [Claude Cowork](https://composio.dev/toolkits/eventzilla/framework/claude-cowork) - [Codex](https://composio.dev/toolkits/eventzilla/framework/codex) - [OpenClaw](https://composio.dev/toolkits/eventzilla/framework/openclaw) - [Hermes](https://composio.dev/toolkits/eventzilla/framework/hermes-agent) - [CLI](https://composio.dev/toolkits/eventzilla/framework/cli) - [Google ADK](https://composio.dev/toolkits/eventzilla/framework/google-adk) - [LangChain](https://composio.dev/toolkits/eventzilla/framework/langchain) - [Vercel AI SDK](https://composio.dev/toolkits/eventzilla/framework/ai-sdk) - [Mastra AI](https://composio.dev/toolkits/eventzilla/framework/mastra-ai) - [LlamaIndex](https://composio.dev/toolkits/eventzilla/framework/llama-index) - [CrewAI](https://composio.dev/toolkits/eventzilla/framework/crew-ai) ## 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 Eventzilla - 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 Eventzilla 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 Eventzilla MCP server, and what's possible with it? The Eventzilla MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Eventzilla account. It provides structured and secure access to your event management data, so your agent can perform actions like listing events, retrieving attendee details, exploring event categories, and managing user information on your behalf. - Comprehensive event listing and filtering: Ask your agent to fetch all your events or filter them by category, date, or status to get a quick overview of what's coming up or what has happened. - Easy attendee and user management: Have your agent list all users associated with your account, making it simple to review or export attendee and staff details. - Detailed user profile retrieval: Direct your agent to pull up full profiles for any user, helping you get the context you need without manual searching. - Quick access to event categories: Let your agent fetch all available event categories, so you can easily organize, sort, or plan new events based on your needs. ## Supported Tools | Tool slug | Name | Description | |---|---|---| | `EVENTZILLA_CANCEL_ORDER` | Cancel Order | Tool to cancel an event order by checkout ID and event ID. Use when you need to cancel a customer's order and require a reason for the cancellation. | | `EVENTZILLA_CHECK_IN_ATTENDEE` | Check In Attendee | Tool to check in or revert check-in for an attendee using their unique barcode. Use when you need to mark an attendee as present at an event or undo a check-in. | | `EVENTZILLA_CONFIRM_ORDER` | Confirm Order | Tool to confirm an event order by checkout ID and event ID. Use when you need to confirm a pending order and optionally send a confirmation email to the buyer. | | `EVENTZILLA_GET_USER_DETAILS` | Get User Details | Tool to retrieve detailed information of a specific user. Use after listing users to fetch full profile. | | `EVENTZILLA_LIST_CATEGORIES` | List Event Categories | Tool to retrieve event categories available in Eventzilla. Use when you need to present or choose from available categories before creating or filtering events. | | `EVENTZILLA_LIST_EVENTS` | List Events | Tool to retrieve a list of events associated with your account (supports filtering). Use when you need to list or filter events for your organization. | | `EVENTZILLA_LIST_EVENT_TICKETS` | List Event Tickets | Tool to retrieve all ticket categories for a specified event. Returns ticket types with pricing, availability, sales dates, limits, and additional options like partial payment. | | `EVENTZILLA_LIST_EVENT_TRANSACTIONS` | List Event Transactions | Tool to retrieve all transactions for a specified event. Use when you need to get transaction details including buyer information, amounts, status, and payment methods for an event. | | `EVENTZILLA_LIST_USERS` | List Users | Tool to retrieve a list of users associated with your account. Use when you need to fetch and paginate through users. | ## Supported Triggers None listed. ## Creating MCP Server - Stand-alone vs Composio SDK The Eventzilla MCP server is an implementation of the Model Context Protocol that connects your AI agent to Eventzilla. It provides structured and secure access so your agent can perform Eventzilla operations on your behalf through a secure, permission-based interface. With Composio's managed implementation, you don't have to create your own developer app. For production, if you're building an end product, we recommend using your own credentials. The managed server helps you prototype fast and go from 0-1 faster. ## Step-by-step Guide ### 1. 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 ### 1. Getting API Keys for OpenAI and Composio OpenAI API Key - Go to the [OpenAI dashboard](https://platform.openai.com/settings/organization/api-keys) 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](https://dashboard.composio.dev?utm_source=toolkits&utm_medium=framework_docs). - Navigate to your API settings and generate a new API key. - Store this key securely as you'll need it for authentication. ### 2. Install dependencies Install the required libraries. What's happening: - composio connects your agent to external SaaS tools like Eventzilla - pydantic-ai lets you create structured AI agents with tool support - python-dotenv loads your environment variables securely from a .env file ```bash pip install composio pydantic-ai python-dotenv ``` ### 3. Set up environment variables 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 ```bash COMPOSIO_API_KEY=your_composio_api_key_here USER_ID=your_user_id_here OPENAI_API_KEY=your_openai_api_key ``` ### 4. Import dependencies What's happening: - We load environment variables and import required modules - Composio manages connections to Eventzilla - MCPServerStreamableHTTP connects to the Eventzilla MCP server endpoint - Agent from Pydantic AI lets you define and run the AI assistant ```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() ``` ### 5. Create a Tool Router Session What's happening: - We're creating a Tool Router session that gives your agent access to Eventzilla 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 ```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 Eventzilla composio = Composio(api_key=api_key) session = composio.create( user_id=user_id, toolkits=["eventzilla"], ) url = session.mcp.url if not url: raise ValueError("Composio session did not return an MCP URL") ``` ### 6. Initialize the Pydantic AI Agent What's happening: - The MCP client connects to the Eventzilla endpoint - The agent uses GPT-5 to interpret user commands and perform Eventzilla operations - The instructions field defines the agent's role and behavior ```python # Attach the MCP server to a Pydantic AI Agent eventzilla_mcp = MCPServerStreamableHTTP(url, headers={"x-api-key": COMPOSIO_API_KEY}) agent = Agent( "openai:gpt-5", toolsets=[eventzilla_mcp], instructions=( "You are a Eventzilla assistant. Use Eventzilla tools to help users " "with their requests. Ask clarifying questions when needed." ), ) ``` ### 7. Build the chat interface What's happening: - The agent reads input from the terminal and streams its response - Eventzilla API calls happen automatically under the hood - The model keeps conversation history to maintain context across turns ```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 Eventzilla.\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() ``` ### 8. Run the application What's happening: - The asyncio loop launches the agent and keeps it running until you exit ```python if __name__ == "__main__": asyncio.run(main()) ``` ## Complete Code ```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() 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 Eventzilla composio = Composio(api_key=api_key) session = composio.create( user_id=user_id, toolkits=["eventzilla"], ) 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 eventzilla_mcp = MCPServerStreamableHTTP(url, headers={"x-api-key": COMPOSIO_API_KEY}) agent = Agent( "openai:gpt-5", toolsets=[eventzilla_mcp], instructions=( "You are a Eventzilla assistant. Use Eventzilla 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 Eventzilla.\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 Eventzilla through Composio's Tool Router. With this setup, your agent can perform real Eventzilla 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 + Eventzilla 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 Eventzilla MCP Agent with another framework - [OpenAI Agents SDK](https://composio.dev/toolkits/eventzilla/framework/open-ai-agents-sdk) - [Claude Agent SDK](https://composio.dev/toolkits/eventzilla/framework/claude-agents-sdk) - [Claude Code](https://composio.dev/toolkits/eventzilla/framework/claude-code) - [Claude Cowork](https://composio.dev/toolkits/eventzilla/framework/claude-cowork) - [Codex](https://composio.dev/toolkits/eventzilla/framework/codex) - [OpenClaw](https://composio.dev/toolkits/eventzilla/framework/openclaw) - [Hermes](https://composio.dev/toolkits/eventzilla/framework/hermes-agent) - [CLI](https://composio.dev/toolkits/eventzilla/framework/cli) - [Google ADK](https://composio.dev/toolkits/eventzilla/framework/google-adk) - [LangChain](https://composio.dev/toolkits/eventzilla/framework/langchain) - [Vercel AI SDK](https://composio.dev/toolkits/eventzilla/framework/ai-sdk) - [Mastra AI](https://composio.dev/toolkits/eventzilla/framework/mastra-ai) - [LlamaIndex](https://composio.dev/toolkits/eventzilla/framework/llama-index) - [CrewAI](https://composio.dev/toolkits/eventzilla/framework/crew-ai) ## Related Toolkits - [Google Calendar](https://composio.dev/toolkits/googlecalendar) - Google Calendar is a time management service for scheduling meetings, events, and reminders. It streamlines personal and team organization with integrated notifications and sharing options. - [Apaleo](https://composio.dev/toolkits/apaleo) - Apaleo is a cloud-based property management platform for hospitality businesses. It centralizes reservations, billing, and daily operations for smoother hotel management. - [Appointo](https://composio.dev/toolkits/appointo) - Appointo is an appointment booking platform for Shopify stores. It lets businesses add online scheduling to their websites with zero coding. - [Bart](https://composio.dev/toolkits/bart) - Bart is the Bay Area Rapid Transit system, providing fast public transportation across the San Francisco Bay Area. It helps commuters and travelers get real-time schedule info, plan routes, and stay updated on service changes. - [Bookingmood](https://composio.dev/toolkits/bookingmood) - Bookingmood is commission-free booking software for rental businesses. It lets you manage reservations and sync bookings directly on your website. - [Booqable](https://composio.dev/toolkits/booqable) - Booqable is a rental software platform for managing inventory, bookings, and reservations. It helps businesses streamline rentals and keep track of every item with ease. - [Cal](https://composio.dev/toolkits/cal) - Cal is a meeting scheduling platform that offers shareable booking links and real-time calendar syncing. It streamlines the process of finding mutual availability to make scheduling effortless. - [Calendarhero](https://composio.dev/toolkits/calendarhero) - Calendarhero is a powerful scheduling platform that streamlines your calendar management across multiple services. It helps you efficiently schedule, reschedule, and organize meetings without the back-and-forth. - [Calendly](https://composio.dev/toolkits/calendly) - Calendly is an appointment scheduling tool that automates meeting invitations, availability checks, and reminders. It helps individuals and teams avoid endless email back-and-forth when booking meetings. - [Etermin](https://composio.dev/toolkits/etermin) - eTermin is an online appointment scheduling platform for businesses to manage bookings. It streamlines client appointments, saving time and reducing scheduling conflicts. - [Evenium](https://composio.dev/toolkits/evenium) - Evenium is an all-in-one platform for managing professional events, from planning to analysis. It helps teams simplify event logistics, boost engagement, and track every detail in one place. - [Eventee](https://composio.dev/toolkits/eventee) - Eventee is a user-friendly event management platform for mobile and web. It boosts attendee engagement for in-person, virtual, and hybrid events. - [Humanitix](https://composio.dev/toolkits/humanitix) - Humanitix is a not-for-profit ticketing platform that donates 100% of profits to charity. It empowers event organizers to make social impact with every ticket sold. - [Lodgify](https://composio.dev/toolkits/lodgify) - Lodgify is an all-in-one vacation rental software for property managers and owners. It centralizes bookings, guest messaging, and channel synchronization in one dashboard. - [Planyo Online Booking](https://composio.dev/toolkits/planyo_online_booking) - Planyo Online Booking is a flexible reservation system for managing bookings by day, hour, or event. It streamlines scheduling for any business needing reservations. - [Scheduleonce](https://composio.dev/toolkits/scheduleonce) - Scheduleonce is a scheduling platform for capturing, qualifying, and engaging with inbound leads. It streamlines appointment booking and follow-ups for faster lead conversion. - [Supersaas](https://composio.dev/toolkits/supersaas) - Supersaas is a flexible appointment scheduling platform for businesses and individuals. It streamlines bookings, reminders, and calendar management in one place. - [Sympla](https://composio.dev/toolkits/sympla) - Sympla is a platform for managing in-person and online events, ticket sales, and registrations. It streamlines event setup, attendee tracking, and digital content delivery. - [Gmail](https://composio.dev/toolkits/gmail) - Gmail is Google's email service with powerful spam protection, search, and G Suite integration. It keeps your inbox organized and makes communication fast and reliable. - [Google Drive](https://composio.dev/toolkits/googledrive) - Google Drive is a cloud storage platform for uploading, sharing, and collaborating on files. It's perfect for keeping your documents accessible and organized across devices. ## Frequently Asked Questions ### What are the differences in Tool Router MCP and Eventzilla MCP? With a standalone Eventzilla MCP server, the agents and LLMs can only access a fixed set of Eventzilla tools tied to that server. However, with the Composio Tool Router, agents can dynamically load tools from Eventzilla 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 Eventzilla tools. ### Can I manage the permissions and scopes for Eventzilla while using Tool Router? Yes, absolutely. You can configure which Eventzilla 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 Eventzilla data and credentials are handled as safely as possible. --- [See all toolkits](https://composio.dev/toolkits) ยท [Composio docs](https://docs.composio.dev/llms.txt)