Hub Planner with Pydantic AI

How to integrate Hub Planner MCP with Pydantic AI

Introduction TL;DR What is Pydantic AI What is the Hub Planner MCP server Supported Tools & Triggers Creating MCP Server - Stand-alone vs Tool Router Step-by-step Guide Complete Code Conclusion How to build Hub Planner MCP Agent with another framework Explore Other Toolkits FAQ

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Introduction

This guide walks you through connecting Hub Planner to Pydantic AI using the Composio tool router. By the end, you'll have a working Hub Planner agent that can show all upcoming project bookings for my team, log 8 hours timesheet for john doe, list all unassigned resources this month through natural language commands.

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

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

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 Hub Planner
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 Hub Planner 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 Hub Planner MCP server, and what's possible with it?

The Hub Planner MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Hub Planner account. It provides structured and secure access so your agent can perform Hub Planner operations on your behalf.

Supported Tools & Triggers

Tools

Add Clients to ProjectTool to add clients to a project by project ID.

Add project custom field choicesAdd choices to a project custom field template of SELECT, RADIO, or CHECKBOX type.

Add Projects to GroupTool to add projects to a project group in Hub Planner.

Add Project TagsTool to add tags to a Hub Planner project.

Add Resource Custom Field ChoicesTool to add choices to a resource custom field template of SELECT, RADIO, or CHECKBOX type.

Add Resources to ProjectTool to add resources to a project by project ID.

Add Resources to Resource GroupTool to add resources to a resource group by group ID.

Add Resource TagsTool to add tags to a resource in Hub Planner.

Create Billing RateTool to create a new billing rate in Hub Planner.

Create BookingTool to create a new booking for a resource on a project in Hub Planner.

Create Booking CategoryTool to create a new booking category in Hub Planner.

Create ClientTool to create a new client in Hub Planner.

Create Cost CategoryTool to create a new project cost category in Hub Planner.

Create EventTool to create a new event in Hub Planner.

Create HolidayTool to create a new holiday in Hub Planner.

Create MilestoneTool to create a new milestone for a project in Hub Planner.

Create ProjectTool to create a new project in Hub Planner.

Create Project Custom Field TemplateTool to create a new project custom field template in Hub Planner.

Create Project GroupTool to create a new project group in Hub Planner.

Create Project TagTool to create a new project tag in Hub Planner.

Create ResourceTool to create a new resource in Hub Planner.

Create Resource Custom Field TemplateTool to create a new resource custom field template in Hub Planner.

Create Resource TagTool to create a new resource tag in Hub Planner.

Create Time EntryTool to create a new time entry for a resource on a project in Hub Planner.

Create VacationTool to create a new vacation request for a resource in Hub Planner.

Delete Billing RateTool to delete a specific billing rate by ID in Hub Planner.

Delete BookingTool to delete a specific booking by ID in Hub Planner.

Delete BookingsTool to delete multiple bookings by IDs, resource ID, or project ID.

Delete ClientTool to delete a specific client by ID in Hub Planner.

Delete Cost CategoryTool to delete a specific project cost category by ID in Hub Planner.

Delete EventTool to delete a specific event by ID in Hub Planner.

Delete HolidayTool to delete a specific holiday by ID in Hub Planner.

Delete MilestoneTool to delete a specific milestone by ID in Hub Planner.

Delete ProjectTool to delete a specific project by ID in Hub Planner.

Delete Project Custom Field TemplateTool to delete a project custom field template by its ID.

Delete Project GroupTool to delete a specific project group by ID in Hub Planner.

Delete ProjectsTool to delete multiple projects by their IDs in a single operation.

Delete Project TagTool to delete a specific project tag by ID in Hub Planner.

Delete ResourceTool to delete a specific resource by ID.

Delete Resource Custom Field TemplateTool to delete a specific resource custom field template by ID.

Delete resourcesTool to delete multiple resources by their IDs in a single operation.

Delete Resource TagTool to delete a specific resource tag by ID in Hub Planner.

Delete Time EntriesTool to delete multiple time entries by their IDs in a single operation.

Delete Time EntryTool to delete a specific time entry by ID in Hub Planner.

Delete VacationTool to delete a specific vacation by ID in Hub Planner.

Get Billing Rate by IDTool to retrieve a specific billing rate by ID from Hub Planner.

Get Booking by IDTool to retrieve a specific booking by ID from Hub Planner.

Get Booking Category by IDTool to retrieve a specific booking category by ID from Hub Planner.

Get Client by IDTool to retrieve a specific client by ID from Hub Planner.

Get Cost CategoryTool to retrieve a specific project cost category by ID from Hub Planner.

Get Event by IDTool to retrieve a specific event by ID from Hub Planner.

Get Holiday by IDTool to retrieve a specific holiday by ID from Hub Planner.

Get MilestoneTool to retrieve a specific milestone by ID from Hub Planner.

Get ProjectTool to retrieve a specific project by ID from Hub Planner.

Get Project Custom Field TemplateTool to retrieve a specific project custom field template by ID.

Get Project Custom Field TemplatesTool to retrieve all project custom field templates defined for your Hub Planner account.

Get Project GroupTool to retrieve a specific project group by ID from Hub Planner.

Get Project TagsTool to retrieve all tags associated with a specific Hub Planner project.

Get Resource by IDTool to retrieve a specific resource by ID from Hub Planner.

Get Resource Custom Field TemplateTool to retrieve a specific resource custom field template by ID from Hub Planner.

Get Resource Custom Field TemplatesTool to retrieve custom field templates defined for resources in your Hub Planner account.

Get Resource TagsTool to retrieve all tags associated with a specific resource from Hub Planner.

Get Time Entry by IDTool to retrieve a specific time entry by ID from Hub Planner.

Get Vacation by IDTool to retrieve a specific vacation by ID from Hub Planner.

List Billing RatesTool to retrieve all billing rates from Hub Planner.

List Booking CategoriesTool to retrieve all booking categories from Hub Planner.

List BookingsTool to retrieve all bookings from Hub Planner with pagination support.

List Category GroupsTool to get all category groups from Hub Planner.

List ClientsTool to get all clients from Hub Planner.

List Cost CategoriesTool to retrieve all project cost categories from Hub Planner.

List EventsTool to retrieve all events from Hub Planner.

List HolidaysTool to retrieve all public holidays from Hub Planner.

List Project GroupsTool to get all project groups from Hub Planner.

List Project ManagersTool to get all project managers from Hub Planner.

List ProjectsTool to retrieve all projects from Hub Planner.

List Project TagsTool to retrieve all project tags from Hub Planner.

List Resource GroupsTool to get all resource groups from Hub Planner.

List ResourcesTool to get all resources from Hub Planner.

List Resource TagsTool to get all resource tags from Hub Planner.

List Time EntriesTool to get all time entries from Hub Planner.

List Unassigned WorkTool to retrieve all unassigned work from Hub Planner.

List VacationsTool to retrieve all vacations from Hub Planner.

Patch BookingTool to partially update an existing booking in Hub Planner.

Patch VacationTool to partially update an existing vacation by ID in Hub Planner.

Remove Client From ProjectsTool to remove a client from one or more projects in Hub Planner.

Remove Project From GroupsTool to remove a project from one or more project groups in Hub Planner.

Remove Project TagTool to remove a tag from a Hub Planner project.

Remove Resource from ProjectsTool to remove a resource from one or more projects in Hub Planner.

Remove Resource TagTool to remove a tag from a resource.

Search Billing RatesTool to search billing rates in Hub Planner with filters.

Search Booking CategoriesTool to search booking categories in Hub Planner with filters.

Search BookingsTool to search bookings in Hub Planner with advanced filters.

Search ClientsTool to search clients with filters in Hub Planner.

Search Cost CategoriesTool to search project cost categories in Hub Planner with filters.

Search EventsTool to search events with filters in Hub Planner.

Search HolidaysTool to search holidays with filters in Hub Planner.

Search MilestonesTool to search milestones in Hub Planner with filters.

Search Project Custom FieldsTool to search project custom field templates by type, label, or required status.

Search ProjectsTool to search projects with filters in Hub Planner.

Search Resource Custom Field TemplatesTool to search resource custom field templates by type, label, or other properties.

Search resourcesTool to search for resources with various filters in Hub Planner.

Search Time EntriesTool to search time entries with filters in Hub Planner.

Search VacationsTool to search vacations in Hub Planner with advanced filters.

Set Project ManagersTool to set project managers for a Hub Planner project.

Update Billing RateTool to update an existing billing rate by ID in Hub Planner.

Update BookingTool to update an existing booking in Hub Planner by ID.

Update Booking CategoryTool to update an existing booking category by ID in Hub Planner.

Update ClientTool to update an existing client by ID in Hub Planner.

Update Cost CategoryTool to update an existing project cost category by ID in Hub Planner.

Update EventTool to update an existing event in Hub Planner by ID.

Update HolidayTool to update an existing holiday by ID in Hub Planner.

Update MilestoneTool to update an existing milestone by ID in Hub Planner.

Update Project Custom Field TemplateTool to update an existing project custom field template in Hub Planner.

Update Project GroupTool to update an existing project group by ID in Hub Planner.

Update Hub Planner projectsTool to update one or more projects in Hub Planner.

Update Project TagTool to update an existing project tag by ID in Hub Planner.

Update Resource Custom Field TemplateTool to update an existing resource custom field template in Hub Planner.

Update Resource GroupTool to update an existing resource group by ID in Hub Planner.

Update ResourcesTool to update one or more resources in Hub Planner.

Update Resource TagTool to update an existing resource tag by ID in Hub Planner.

Update Time EntryTool to update an existing time entry by ID in Hub Planner.

Update VacationTool to update an existing vacation by ID in Hub Planner.

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

What is Tool Router?

Composio's Tool Router 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 Tool Router

The tool router generates a secure MCP URL that your agents can access to perform actions.

How the Tool Router works

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

What's happening:

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

OpenAI Agents SDK

Use Hub Planner MCP with OpenAI Agents SDK

Claude Agent SDK

Use Hub Planner MCP with Claude Agent SDK

Google ADK

Use Hub Planner MCP with Google ADK

LangChain

Use Hub Planner MCP with LangChain

Vercel AI SDK

Use Hub Planner MCP with Vercel AI SDK

Mastra AI

Use Hub Planner MCP with Mastra AI

LlamaIndex

Use Hub Planner MCP with LlamaIndex

CrewAI

Use Hub Planner MCP with CrewAI

Claude Code

Use Hub Planner MCP with Claude Code

Codex

Use Hub Planner MCP with Codex

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TOOLKIT MARKETPLACE

FAQ

What are the differences in Tool Router MCP and Hub Planner MCP?

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

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

Yes, absolutely. You can configure which Hub Planner 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 Hub Planner 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 Hub Planner MCP with Pydantic AI

Table of Contents

Connect Hub Planner without Auth hassles

Introduction

TL;DR

What is Pydantic AI?

What is the Hub Planner 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 Tool Router?

How the Tool Router 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

How to build Hub Planner MCP Agent with another framework

OpenAI Agents SDK

Claude Agent SDK

Google ADK

LangChain

Vercel AI SDK

Mastra AI

LlamaIndex

CrewAI

Claude Code

Codex

Explore Other Toolkits

Addressfinder

Agiled

Airtable

FAQ

What are the differences in Tool Router MCP and Hub Planner MCP?

Can I use Tool Router MCP with Pydantic AI?

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

How safe is my data with Composio Tool Router?

Used by agents from

Never worry about agent reliability