How to integrate Radar MCP with Pydantic AI

This guide walks you through connecting Radar to Pydantic AI using the Composio tool router. By the end, you'll have a working Radar agent that can autocomplete address based on partial input, get users currently inside geofence, convert address to latitude and longitude through natural language commands. This guide will help you understand how to give your Pydantic AI agent real control over a Radar account through Composio's Radar MCP server. Before we dive in, let's take a quick look at the key ideas and tools involved.

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Radar

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Radar is a location infrastructure platform providing APIs and SDKs for geofencing, geocoding, and location tracking. It helps developers add precise, scalable location features to any app with minimal effort.

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Introduction

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

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

Also integrate Radar with

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

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 Radar
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 Radar 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 Radar MCP server, and what's possible with it?

The Radar MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Radar account. It provides structured and secure access to advanced location services, so your agent can perform actions like geocoding addresses, managing geofences, tracking trips, searching places, and retrieving location context on your behalf.

Address and place autocomplete: Instantly get relevant address or place suggestions based on partial user input, improving data quality and user experience.
Precise geocoding and location context: Convert full addresses to latitude/longitude and fetch rich context—including region, geofence, and place details—for any set of coordinates.
Geofence management: Retrieve, create, or delete geofences to define dynamic boundaries and monitor activity within specific areas automatically.
Trip creation and tracking: Start, fetch, or delete trips to enable real-time location tracking and trip management for devices or users.
Live user monitoring in geofences: Effortlessly list all users currently inside a defined geofence, supporting presence-based automation and analytics.

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

Step by step09 STEPS

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 Radar
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 Radar
MCPServerStreamableHTTP connects to the Radar 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 Radar
    composio = Composio(api_key=api_key)
    session = composio.create(
        user_id=user_id,
        toolkits=["radar"],
    )
    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 Radar 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
radar_mcp = MCPServerStreamableHTTP(url, headers={"x-api-key": COMPOSIO_API_KEY})
agent = Agent(
    "openai:gpt-5",
    toolsets=[radar_mcp],
    instructions=(
        "You are a Radar assistant. Use Radar tools to help users "
        "with their requests. Ask clarifying questions when needed."
    ),
)

What's happening:

The MCP client connects to the Radar endpoint
The agent uses GPT-5 to interpret user commands and perform Radar 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 Radar.\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
Radar 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 Radar 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 Radar
    composio = Composio(api_key=api_key)
    session = composio.create(
        user_id=user_id,
        toolkits=["radar"],
    )
    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
    radar_mcp = MCPServerStreamableHTTP(url, headers={"x-api-key": COMPOSIO_API_KEY})
    agent = Agent(
        "openai:gpt-5",
        toolsets=[radar_mcp],
        instructions=(
            "You are a Radar assistant. Use Radar 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 Radar.\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 Radar through Composio's Tool Router. With this setup, your agent can perform real Radar 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 + Radar 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 Radar action and event your agent gets out of the box.

Autocomplete Address or Place

Tool to autocomplete partial addresses and place names based on relevance and proximity.

Create Beacon

Tool to create a new beacon in Radar.

Create Trip

Tool to create a new trip.

Delete Beacon

Tool to delete a beacon by its Radar ID.

Delete Geofence

Tool to delete a geofence by ID.

Delete Geofence By Tag

Tool to delete a geofence by tag and external ID.

Delete Trip

Tool to delete a trip by its Radar ID or external ID.

Delete User

Tool to delete a user by Radar _id, userId, or deviceId.

Forward Geocode

Tool to convert an address into geographic coordinates.

Get Beacon

Tool to retrieve a beacon by Radar _id.

Get Beacon By Tag

Tool to get a specific beacon by tag and external ID.

Get Context for Location

Tool to retrieve context for a given location.

Get Geofence

Tool to retrieve a geofence by Radar _id or tag/externalId.

Get Places Settings

Tool to retrieve current Places settings for your Radar project.

Get Route Directions

Tool to get turn-by-turn directions between multiple locations.

Get Route Matrix

Tool to calculate travel distance and duration between multiple origins and destinations for up to 625 routes.

Get Trip

Tool to retrieve a trip by ID or externalId.

Get User

Tool to get a user by Radar _id, userId, or deviceId.

Get Users in Geofence

Tool to retrieve users currently within a specific geofence.

IP Geocode

Tool to geocode an IP address to city, state, and country.

List Events

Tool to list events.

List Geofences

Tool to list all geofences sorted by updated time.

List Trips

Tool to list all trips, sorted by updated time.

List Users

Tool to list Radar users sorted by update time.

Reverse Geocode

Tool to convert geographic coordinates to structured addresses.

Route Distance

Tool to compute distance and travel time between origins and destinations.

Search Geofences

Tool to search for geofences near a given location.

Search Places Near Location

Tool to search for places near given coordinates.

Search Users Near Location

Tool to search for users near a location.

Track Location Update

Tool to track a user's location update.

Update Places Settings

Tool to update Places settings for your Radar project including chain metadata preferences.

Update Trip

Tool to update a trip.

Update Trip By ID

Tool to update a trip status by Radar _id or external ID.

Upsert Beacon by ID

Tool to create or update a beacon by Radar _id.

Upsert Beacon by Tag

Tool to create or update a beacon by tag and externalId.

Upsert Geofence

Tool to create or update a geofence by tag and externalId.

Upsert Geofence By ID

Tool to create or update a geofence by Radar _id.

FRAMEWORKS

How to build Radar MCP Agent with another framework

OpenAI Agents SDK

Use Radar MCP with OpenAI Agents SDK

Claude Agent SDK

Use Radar MCP with Claude Agent SDK

Claude Code

Use Radar MCP with Claude Code

Claude Cowork

Use Radar MCP with Claude Cowork

Codex

Use Radar MCP with Codex

OpenClaw

Use Radar MCP with OpenClaw

Hermes

Use Radar MCP with Hermes

CLI

Use Radar MCP with CLI

Google ADK

Use Radar MCP with Google ADK

LangChain

Use Radar MCP with LangChain

Vercel AI SDK

Use Radar MCP with Vercel AI SDK

Mastra AI

Use Radar MCP with Mastra AI

LlamaIndex

Use Radar MCP with LlamaIndex

CrewAI

Use Radar MCP with CrewAI

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Addressfinder is a data quality platform for verifying addresses, emails, and phone numbers. It helps you ensure accurate customer and contact data every time.

FAQ

Frequently asked questions

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

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

Start with Radar.It takes 30 seconds.

Managed auth, hosted MCP servers, and every Radar tool your agent needs.Free to start.

Start building

Customer stories

Teams ship real agents on Composio

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

Harsha Gaddipati

Co-founder, Slashy

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's immensely helped keep new users on the platform.

Abhi Arya

Co-founder, Opennote

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

Nirman Dave

CEO, Zams

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

Ryan Yu

Founder, Extra Thursday

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

Tomisin Jenrola

Founder & CEO, SwarmZero

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.

Jerome Leclanche

Co-Founder, Ingram Technologies

How to integrate Radar MCP with Pydantic AI

Connect Radar without auth hassles

Introduction

Also integrate Radar with

TL;DR

What is Pydantic AI?

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

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

Create a Tool Router Session

Initialize the Pydantic AI Agent

Build the chat interface

Run the application

Complete Code

Conclusion

Supported Tools

How to build Radar MCP Agent with another framework

OpenAI Agents SDK

Claude Agent SDK

Claude Code

Claude Cowork

Codex

OpenClaw

Hermes

CLI

Google ADK

LangChain

Vercel AI SDK

Mastra AI

LlamaIndex

CrewAI

Explore Other Toolkits

Excel

21risk

Abstract

Addressfinder

Frequently asked questions

What are the differences in Tool Router MCP and Radar MCP?+

Can I use Tool Router MCP with Pydantic AI?+

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

How safe is my data with Composio Tool Router?+

Start with Radar.It takes 30 seconds.

Teams ship real agents on Composio