How to integrate Bigml MCP with Pydantic AI

This guide walks you through connecting Bigml to Pydantic AI using the Composio tool router. By the end, you'll have a working Bigml agent that can create a new bigml project for customer data, list all correlations available in your account, get details for a specific bigml project through natural language commands. This guide will help you understand how to give your Pydantic AI agent real control over a Bigml account through Composio's Bigml MCP server. Before we dive in, let's take a quick look at the key ideas and tools involved.

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BigML is a machine learning platform that lets you build, train, and deploy predictive models from your data. Its intuitive interface and robust API make machine learning accessible and efficient.

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Introduction

This guide walks you through connecting Bigml to Pydantic AI using the Composio tool router. By the end, you'll have a working Bigml agent that can create a new bigml project for customer data, list all correlations available in your account, get details for a specific bigml project through natural language commands.

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

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

Also integrate Bigml with

OpenAI Agents SDKClaude Agent SDKClaude CodeClaude CoworkCodexOpenClawHermesCLIGoogle ADKLangChainVercel AI SDKMastra AILlamaIndexCrewAI

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 Bigml
  • 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 Bigml 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 Bigml MCP server, and what's possible with it?

The Bigml MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Bigml account. It provides structured and secure access to your machine learning environment, so your agent can perform actions like creating projects, managing data connectors, inspecting resources, and analyzing correlations on your behalf.

  • Project creation and organization: Easily direct your agent to create new projects to group related BigML resources for streamlined workflows.
  • External data connector management: Have your agent set up and retrieve external connectors to bring in data from external sources and databases.
  • Resource inspection and retrieval: Let your agent fetch detailed metadata about projects or connectors, helping you monitor and audit your ML assets.
  • Automated project cleanup: Instruct your agent to delete obsolete or unused projects, ensuring your workspace stays organized and efficient.
  • Correlation browsing and analysis: Ask your agent to list and paginate correlation resources, uncovering relationships among your datasets for deeper insights.

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

Step by step09 STEPS
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
2

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.
3

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 Bigml
  • pydantic-ai lets you create structured AI agents with tool support
  • python-dotenv loads your environment variables securely from a .env file
4

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
5

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 Bigml
  • MCPServerStreamableHTTP connects to the Bigml MCP server endpoint
  • Agent from Pydantic AI lets you define and run the AI assistant
6

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 Bigml
    composio = Composio(api_key=api_key)
    session = composio.create(
        user_id=user_id,
        toolkits=["bigml"],
    )
    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 Bigml 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
7

Initialize the Pydantic AI Agent

python
# Attach the MCP server to a Pydantic AI Agent
bigml_mcp = MCPServerStreamableHTTP(url, headers={"x-api-key": COMPOSIO_API_KEY})
agent = Agent(
    "openai:gpt-5",
    toolsets=[bigml_mcp],
    instructions=(
        "You are a Bigml assistant. Use Bigml tools to help users "
        "with their requests. Ask clarifying questions when needed."
    ),
)
What's happening:
  • The MCP client connects to the Bigml endpoint
  • The agent uses GPT-5 to interpret user commands and perform Bigml operations
  • The instructions field defines the agent's role and behavior
8

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 Bigml.\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
  • Bigml API calls happen automatically under the hood
  • The model keeps conversation history to maintain context across turns
9

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 Bigml and Pydantic AI:

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 Bigml
    composio = Composio(api_key=api_key)
    session = composio.create(
        user_id=user_id,
        toolkits=["bigml"],
    )
    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
    bigml_mcp = MCPServerStreamableHTTP(url, headers={"x-api-key": COMPOSIO_API_KEY})
    agent = Agent(
        "openai:gpt-5",
        toolsets=[bigml_mcp],
        instructions=(
            "You are a Bigml assistant. Use Bigml 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 Bigml.\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 Bigml through Composio's Tool Router. With this setup, your agent can perform real Bigml 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 + Bigml for workflow automation)
This architecture makes your AI agent "agent-native", able to securely use APIs in a unified, composable way without custom integrations.
TOOLS

Supported Tools

Every Bigml action and event your agent gets out of the box.

Create External Connector

Tool to create a new external connector for data sources.

Create Project

Tool to create a new project.

Delete Project

Tool to delete an existing project.

Get Configuration

Retrieves complete details of a BigML configuration by its ID to get stored parameters.

Get External Connector

Retrieves complete details of a BigML external connector by its ID.

Get Project

Tool to retrieve details of a project by ID.

Get Source

Retrieves complete details of a BigML source by its ID.

List Anomaly Detectors

Tool to list anomaly detector resources in your account.

List Anomaly Scores

Tool to list anomaly score resources.

List Associations

Tool to list association resources.

List Association Sets

Tool to list association set resources in your account.

List Batch Anomaly Scores

Tool to list batch anomaly score resources.

List Batch Centroids

Tool to list all batch centroid resources in your account with support for filtering, ordering, and pagination.

List Batch Predictions

Tool to list batch prediction resources.

List Batch Projections

Tool to list batch projection resources with support for filtering, ordering, and pagination.

List Batch Topic Distributions

Tool to list batch topic distribution resources.

List Centroids

Tool to list centroid resources.

List Clusters

Tool to list cluster resources with support for filtering, ordering, and pagination.

List Composites

Tool to list composite source resources.

List Configurations

Tool to list all configuration resources in your account.

List Correlations

Tool to list correlation resources.

List Datasets

Tool to list dataset resources.

List Deepnets

Tool to list deep neural network resources.

List Ensembles

Tool to list ensemble resources with filtering, ordering, and pagination support.

List Evaluations

Tool to list evaluation resources.

List Executions

Tool to list execution resources.

List Forecasts

Tool to list forecast resources.

List Fusions

Tool to list fusion resources.

List Libraries

Tool to list WhizzML library resources.

List Linear Regressions

Tool to list linear regression resources.

List Logistic Regressions

Tool to list logistic regression resources.

List Models

Tool to list model resources.

List OptiMLs

Tool to list OptiML resources in your account.

List PCAs

Tool to list PCA resources.

List Predictions

Tool to list prediction resources.

List Projections

Tool to list projection resources with support for filtering, ordering, and pagination.

List Projects

Tool to list all project resources in your account with support for filtering, ordering, and pagination.

List Samples

Tool to list sample resources.

List Scripts

Tool to list WhizzML script resources.

List Sources

Tool to list source resources in your account.

List Statistical Tests

Tool to list statistical test resources.

List Time Series

Tool to list time series resources.

List Topic Distributions

Tool to list topic distribution resources.

List Topic Models

Tool to list topic model resources.

Update Source

Tool to update a source's name, description, tags, or parsing configuration.

FRAMEWORKS

How to build Bigml MCP Agent with another framework

OpenAI Agents SDK logo

OpenAI Agents SDK

Use Bigml MCP with OpenAI Agents SDK

Claude Agent SDK logo

Claude Agent SDK

Use Bigml MCP with Claude Agent SDK

Claude Code logo

Claude Code

Use Bigml MCP with Claude Code

Claude Cowork logo

Claude Cowork

Use Bigml MCP with Claude Cowork

Codex logo

Codex

Use Bigml MCP with Codex

OpenClaw logo

OpenClaw

Use Bigml MCP with OpenClaw

Hermes logo

Hermes

Use Bigml MCP with Hermes

CLI logo

CLI

Use Bigml MCP with CLI

Google ADK logo

Google ADK

Use Bigml MCP with Google ADK

LangChain logo

LangChain

Use Bigml MCP with LangChain

Vercel AI SDK logo

Vercel AI SDK

Use Bigml MCP with Vercel AI SDK

Mastra AI logo

Mastra AI

Use Bigml MCP with Mastra AI

LlamaIndex logo

LlamaIndex

Use Bigml MCP with LlamaIndex

CrewAI logo

CrewAI

Use Bigml MCP with CrewAI

FAQ

Frequently asked questions

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

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 Bigml tools.

Yes, absolutely. You can configure which Bigml 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.

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 Bigml data and credentials are handled as safely as possible.

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