How to integrate PredictLeads MCP with Pydantic AI

This guide walks you through connecting PredictLeads to Pydantic AI using the Composio tool router. By the end, you'll have a working PredictLeads agent that can discover companies, find similar companies, search technologies, and review company intelligence through natural language commands. This guide will help you understand how to give your Pydantic AI agent real control over a PredictLeads account through Composio's PredictLeads MCP server. Before we dive in, let's take a quick look at the key ideas and tools involved.

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PredictLeads is a company intelligence API for hiring, technology, funding, news, product, and connection data. Use it to spot growth signals and enrich sales, research, and market workflows with fresh company context.

9 Tools

Introduction

This guide walks you through connecting PredictLeads to Pydantic AI using the Composio tool router. By the end, you'll have a working PredictLeads agent that can discover companies, find similar companies, search technologies, and review company intelligence through natural language commands.

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

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

Also integrate PredictLeads 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 PredictLeads
  • 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 PredictLeads 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 PredictLeads MCP server, and what's possible with it?

The PredictLeads MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your PredictLeads account. It provides structured and secure access to company profiles, hiring activity, technology adoption, financing, news, products, and business connections, so your agent can discover companies, research growth signals, compare similar businesses, search technologies, and monitor followed companies on your behalf.

  • Target company discovery: Have your agent find companies that match specific firmographic criteria and gather extended profiles for sales research.
  • Company intelligence research: Direct your agent to retrieve company details and investigate hiring, technology detections, news, financing, regulatory filings, business connections, website changes, repositories, and products.
  • Growth signal discovery: Let the agent search across companies for job openings, technology adoption, news, financing, investor portfolio connections, products, and startup platform posts.
  • Market and competitor analysis: Instruct your agent to find businesses similar to a chosen company and search the tracked technology catalog by name.
  • Account and company monitoring: Have your agent review followed companies and check your PredictLeads subscription status, monthly credit quota, and credit usage.

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 PredictLeads
  • 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 PredictLeads
  • MCPServerStreamableHTTP connects to the PredictLeads 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 PredictLeads
    composio = Composio(api_key=api_key)
    session = composio.create(
        user_id=user_id,
        toolkits=["predict_leads"],
    )
    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 PredictLeads 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
predict_leads_mcp = MCPServerStreamableHTTP(url, headers={"x-api-key": COMPOSIO_API_KEY})
agent = Agent(
    "openai:gpt-5",
    toolsets=[predict_leads_mcp],
    instructions=(
        "You are a PredictLeads assistant. Use PredictLeads tools to help users "
        "with their requests. Ask clarifying questions when needed."
    ),
)
What's happening:
  • The MCP client connects to the PredictLeads endpoint
  • The agent uses GPT-5 to interpret user commands and perform PredictLeads 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 PredictLeads.\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
  • PredictLeads 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 PredictLeads 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 PredictLeads
    composio = Composio(api_key=api_key)
    session = composio.create(
        user_id=user_id,
        toolkits=["predict_leads"],
    )
    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
    predict_leads_mcp = MCPServerStreamableHTTP(url, headers={"x-api-key": COMPOSIO_API_KEY})
    agent = Agent(
        "openai:gpt-5",
        toolsets=[predict_leads_mcp],
        instructions=(
            "You are a PredictLeads assistant. Use PredictLeads 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 PredictLeads.\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 PredictLeads through Composio's Tool Router. With this setup, your agent can perform real PredictLeads 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 + PredictLeads 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 PredictLeads action and event your agent gets out of the box.

Discover Companies

Find companies using firmographic filters.

Discover Intelligence

Discover one page of jobs, technology adoption, news, financing, investor portfolio connections, products, or startup-platform posts across companies.

Get API Subscription

Check PredictLeads subscription status, monthly credit quota, and credits used.

Get Company

Retrieve one company by PredictLeads UUID or bare domain.

Get Company Intelligence

Retrieve one page of a company's jobs, technology detections, news, financing, SEC filings, connections, website changes, GitHub repositories, or products.

Get Intelligence Record

Retrieve one job opening, extended technology detection, technology, news event, SEC filing, or product by identifier.

Get Similar Companies

Find one page of companies similar to a specified PredictLeads company UUID or domain.

List Followed Companies

List one page of companies already followed for PredictLeads webhook updates.

Search Technologies

Search PredictLeads' tracked technology catalog by fuzzy name.

FRAMEWORKS

How to build PredictLeads MCP Agent with another framework

OpenAI Agents SDK logo

OpenAI Agents SDK

Use PredictLeads MCP with OpenAI Agents SDK

Claude Agent SDK logo

Claude Agent SDK

Use PredictLeads MCP with Claude Agent SDK

Claude Code logo

Claude Code

Use PredictLeads MCP with Claude Code

Claude Cowork logo

Claude Cowork

Use PredictLeads MCP with Claude Cowork

Codex logo

Codex

Use PredictLeads MCP with Codex

OpenClaw logo

OpenClaw

Use PredictLeads MCP with OpenClaw

Hermes logo

Hermes

Use PredictLeads MCP with Hermes

CLI logo

CLI

Use PredictLeads MCP with CLI

Google ADK logo

Google ADK

Use PredictLeads MCP with Google ADK

LangChain logo

LangChain

Use PredictLeads MCP with LangChain

Vercel AI SDK logo

Vercel AI SDK

Use PredictLeads MCP with Vercel AI SDK

Mastra AI logo

Mastra AI

Use PredictLeads MCP with Mastra AI

LlamaIndex logo

LlamaIndex

Use PredictLeads MCP with LlamaIndex

CrewAI logo

CrewAI

Use PredictLeads MCP with CrewAI

FAQ

Frequently asked questions

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

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

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