How to integrate Freeagent MCP with Autogen

Connect Autogen to Freeagent MCP. List overdue invoices for this month, create a new expense for office supplies, and more using natural language, with authentication handled for you.

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Freeagent

Oauth2

Freeagent is a cloud-based accounting platform designed for freelancers and small businesses. It simplifies bookkeeping, invoicing, and expense management in one place.

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Introduction

This guide walks you through connecting Freeagent to AutoGen using the Composio tool router. By the end, you'll have a working Freeagent agent that can list overdue invoices for this month, create a new expense for office supplies, summarize all unassigned transactions through natural language commands.

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

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

Also integrate Freeagent with

Claude Code Claude Cowork OpenAI Agents SDK Claude Agent SDK Grok Bot Codex OpenClaw Hermes Atomic Agent Google ADK LangChain Vercel AI SDK Mastra AI LlamaIndex CrewAI Pydantic AI

TL;DR

Here's what you'll learn:

Get and set up your OpenAI and Composio API keys
Install the required dependencies for Autogen and Composio
Initialize Composio and create a Tool Router session for Freeagent
Wire that MCP URL into Autogen using McpWorkbench and StreamableHttpServerParams
Configure an Autogen AssistantAgent that can call Freeagent tools
Run a live chat loop where you ask the agent to perform Freeagent operations

What is AutoGen?

Autogen is a framework for building multi-agent conversational AI systems from Microsoft. It enables you to create agents that can collaborate, use tools, and maintain complex workflows.

Key features include:

Multi-Agent Systems: Build collaborative agent workflows
MCP Workbench: Native support for Model Context Protocol tools
Streaming HTTP: Connect to external services through streamable HTTP
AssistantAgent: Pre-built agent class for tool-using assistants

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

The Freeagent MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Freeagent account. It provides structured and secure access to your accounting records, so your agent can create invoices, record timeslips, review expenses, monitor cash flow, and track tax deadlines on your behalf.

Invoices, estimates, and credit notes: Have your agent create invoices, estimates, and credit notes, convert estimates into invoices, or convert eligible invoices into credit notes.
Financial reporting: Let the agent retrieve cash flow, profit and loss, trial balance, balance sheet, opening balance, and accounting transaction details for your business.
Expenses, bills, and banking: Direct your agent to list or update expenses, create bills with attachments, review bills and bank transactions, or create and list bank accounts.
Contacts, projects, and time tracking: Instruct your agent to create contacts and projects, review existing records, and add timeslips for completed work.
Tax and VAT planning: Have your agent list VAT returns and check your company tax timeline for upcoming events and deadlines.

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 step08 STEPS

Prerequisites

You will need:

A Composio API key
An OpenAI API key (used by Autogen's OpenAIChatCompletionClient)
A Freeagent account you can connect to Composio
Some basic familiarity with Autogen and Python async

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 python-dotenv
pip install autogen-agentchat autogen-ext-openai autogen-ext-tools

Install Composio, Autogen extensions, and dotenv.

What's happening:

composio connects your agent to Freeagent via MCP
autogen-agentchat provides the AssistantAgent class
autogen-ext-openai provides the OpenAI model client
autogen-ext-tools provides MCP workbench support

Set up environment variables

bash

COMPOSIO_API_KEY=your-composio-api-key
OPENAI_API_KEY=your-openai-api-key
USER_ID=your-user-identifier@example.com

Create a .env file in your project folder.

What's happening:

COMPOSIO_API_KEY is required to talk to Composio
OPENAI_API_KEY is used by Autogen's OpenAI client
USER_ID is how Composio identifies which user's Freeagent connections to use

Import dependencies and create Tool Router session

python

import asyncio
import os
from dotenv import load_dotenv
from composio import Composio

from autogen_agentchat.agents import AssistantAgent
from autogen_ext.models.openai import OpenAIChatCompletionClient
from autogen_ext.tools.mcp import McpWorkbench, StreamableHttpServerParams

load_dotenv()

async def main():
    # Initialize Composio and create a Freeagent session
    composio = Composio(api_key=os.getenv("COMPOSIO_API_KEY"))
    session = composio.create(
        user_id=os.getenv("USER_ID"),
        toolkits=["freeagent"]
    )
    url = session.mcp.url

What's happening:

load_dotenv() reads your .env file
Composio(api_key=...) initializes the SDK
create(...) creates a Tool Router session that exposes Freeagent tools
session.mcp.url is the MCP endpoint that Autogen will connect to

Configure MCP parameters for Autogen

python

# Configure MCP server parameters for Streamable HTTP
server_params = StreamableHttpServerParams(
    url=url,
    timeout=30.0,
    sse_read_timeout=300.0,
    terminate_on_close=True,
    headers={"x-api-key": os.getenv("COMPOSIO_API_KEY")}
)

Autogen expects parameters describing how to talk to the MCP server. That is what StreamableHttpServerParams is for.

What's happening:

url points to the Tool Router MCP endpoint from Composio
timeout is the HTTP timeout for requests
sse_read_timeout controls how long to wait when streaming responses
terminate_on_close=True cleans up the MCP server process when the workbench is closed

Create the model client and agent

python

# Create model client
model_client = OpenAIChatCompletionClient(
    model="gpt-5",
    api_key=os.getenv("OPENAI_API_KEY")
)

# Use McpWorkbench as context manager
async with McpWorkbench(server_params) as workbench:
    # Create Freeagent assistant agent with MCP tools
    agent = AssistantAgent(
        name="freeagent_assistant",
        description="An AI assistant that helps with Freeagent operations.",
        model_client=model_client,
        workbench=workbench,
        model_client_stream=True,
        max_tool_iterations=10
    )

What's happening:

OpenAIChatCompletionClient wraps the OpenAI model for Autogen
McpWorkbench connects the agent to the MCP tools
AssistantAgent is configured with the Freeagent tools from the workbench

Run the interactive chat loop

python

print("Chat started! Type 'exit' or 'quit' to end the conversation.\n")
print("Ask any Freeagent related question or task to the agent.\n")

# Conversation loop
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")

    # Run the agent with streaming
    try:
        response_text = ""
        async for message in agent.run_stream(task=user_input):
            if hasattr(message, "content") and message.content:
                response_text = message.content

        # Print the final response
        if response_text:
            print(f"Agent: {response_text}\n")
        else:
            print("Agent: I encountered an issue processing your request.\n")

    except Exception as e:
        print(f"Agent: Sorry, I encountered an error: {str(e)}\n")

What's happening:

The script prompts you in a loop with You:
Autogen passes your input to the model, which decides which Freeagent tools to call via MCP
agent.run_stream(...) yields streaming messages as the agent thinks and calls tools
Typing exit, quit, or bye ends the loop

Complete Code

Here's the complete code to get you started with Freeagent and AutoGen:

python

import asyncio
import os
from dotenv import load_dotenv
from composio import Composio

from autogen_agentchat.agents import AssistantAgent
from autogen_ext.models.openai import OpenAIChatCompletionClient
from autogen_ext.tools.mcp import McpWorkbench, StreamableHttpServerParams

load_dotenv()

async def main():
    # Initialize Composio and create a Freeagent session
    composio = Composio(api_key=os.getenv("COMPOSIO_API_KEY"))
    session = composio.create(
        user_id=os.getenv("USER_ID"),
        toolkits=["freeagent"]
    )
    url = session.mcp.url

    # Configure MCP server parameters for Streamable HTTP
    server_params = StreamableHttpServerParams(
        url=url,
        timeout=30.0,
        sse_read_timeout=300.0,
        terminate_on_close=True,
        headers={"x-api-key": os.getenv("COMPOSIO_API_KEY")}
    )

    # Create model client
    model_client = OpenAIChatCompletionClient(
        model="gpt-5",
        api_key=os.getenv("OPENAI_API_KEY")
    )

    # Use McpWorkbench as context manager
    async with McpWorkbench(server_params) as workbench:
        # Create Freeagent assistant agent with MCP tools
        agent = AssistantAgent(
            name="freeagent_assistant",
            description="An AI assistant that helps with Freeagent operations.",
            model_client=model_client,
            workbench=workbench,
            model_client_stream=True,
            max_tool_iterations=10
        )

        print("Chat started! Type 'exit' or 'quit' to end the conversation.\n")
        print("Ask any Freeagent related question or task to the agent.\n")

        # Conversation loop
        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")

            # Run the agent with streaming
            try:
                response_text = ""
                async for message in agent.run_stream(task=user_input):
                    if hasattr(message, 'content') and message.content:
                        response_text = message.content

                # Print the final response
                if response_text:
                    print(f"Agent: {response_text}\n")
                else:
                    print("Agent: I encountered an issue processing your request.\n")

            except Exception as e:
                print(f"Agent: Sorry, I encountered an error: {str(e)}\n")

if __name__ == "__main__":
    asyncio.run(main())

Conclusion

You now have an Autogen assistant wired into Freeagent through Composio's Tool Router and MCP. From here you can:

Add more toolkits to the toolkits list, for example notion or hubspot
Refine the agent description to point it at specific workflows
Wrap this script behind a UI, Slack bot, or internal tool

Once the pattern is clear for Freeagent, you can reuse the same structure for other MCP-enabled apps with minimal code changes.

TOOLS

Supported Tools

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

Cashflow summary for a date range

Tool to retrieve cashflow summary for a given date range from FreeAgent.

Get Company Details

Tool to retrieve company details from FreeAgent.

Create a Journal Set

Tool to create a journal set in FreeAgent.

Create Sales Tax Period

Tool to create a sales tax period in FreeAgent.

Create Task Under Project

Tool to create a task under a specific project in FreeAgent.

Create A Timeslip

Tool to create a new timeslip in FreeAgent.

Create a User

Tool to create a new user in FreeAgent.

Create Bank Account

Tool to create a bank account in FreeAgent.

Create Bill with Attachment

Tool to create a bill with optional attachment in FreeAgent.

Create Category

Tool to create a custom category in FreeAgent.

Create Contact

Tool to create a new contact in FreeAgent.

Create Credit Note

Tool to create a credit note in FreeAgent.

Create Credit Note Reconciliation

Tool to create a credit note reconciliation in FreeAgent.

Create Estimate

Tool to create a new estimate in FreeAgent.

Create Estimate Item

Tool to create an estimate item in FreeAgent.

Duplicate Estimate

Tool to duplicate an existing estimate in FreeAgent.

Send Estimate Email

Tool to email an estimate in FreeAgent.

Create Invoice

Tool to create an invoice in FreeAgent.

Create Invoice Item

Tool to create an invoice item in FreeAgent.

Duplicate Invoice

Tool to duplicate an existing invoice in FreeAgent.

Create Note

Tool to create a note for a contact or project in FreeAgent.

Create Price List Item

Tool to create a price list item in FreeAgent.

Create Project

Tool to create a project in FreeAgent.

Delete Bank Transaction Explanation

Tool to delete a bank transaction explanation in FreeAgent.

Delete Estimates Default Additional Text

Tool to delete default additional text for estimates in FreeAgent.

Delete Note

Tool to delete a note by its ID.

Get Invoice Timeline

Tool to retrieve invoice timeline showing chronological record of invoice-related events.

Get Mileage Settings

Tool to retrieve mileage settings including engine type/size options and reimbursement rates.

Get Opening Balances

Tool to retrieve the Opening Balances journal set for a company.

Get Personal Profile

Tool to retrieve the authenticated user's personal profile from FreeAgent.

Get the Opening Balances

Tool to retrieve the opening balances from the trial balance summary.

Get the P&L summary

Tool to retrieve the Profit and Loss summary for a specified period from FreeAgent.

Get Trial Balance Summary

Tool to get the trial balance summary from FreeAgent.

Get Balance Sheet

Tool to retrieve the balance sheet for a FreeAgent account.

Get Opening Balances

Tool to retrieve opening balances for the balance sheet from FreeAgent.

List Accounting Transactions

Tool to list all accounting transactions from FreeAgent.

List All CIS Bands

Tool to list all CIS (Construction Industry Scheme) bands for a company.

List All Expenses

Tool to list all expenses from FreeAgent.

List All Price List Items

Tool to list all price list items from FreeAgent.

List All Properties

Tool to list all properties in FreeAgent.

List All Recurring Invoices

Tool to retrieve a list of recurring invoices from FreeAgent.

List All Sales Tax Periods

Tool to list all sales tax periods for a company in FreeAgent.

List All Stock Items

Tool to list all stock items from FreeAgent.

List All Tasks

Tool to list all tasks in FreeAgent.

List All Timeslips

Tool to list all timeslips from FreeAgent.

List All Users

Tool to list users in FreeAgent.

List Bank Accounts

Tool to list bank accounts in FreeAgent.

List Bank Feeds

Tool to list all bank feeds for a company.

List Bank Transactions

Tool to list all bank transactions under a certain bank account in FreeAgent.

List Bills

Tool to retrieve a list of bills from FreeAgent.

List Business Categories

Tool to retrieve all available business categories from FreeAgent.

List Categories

Tool to retrieve all categories for the current FreeAgent company.

List Contacts

Tool to list contacts in FreeAgent.

List Credit Note Reconciliations

Tool to retrieve all credit note reconciliations from FreeAgent.

List Credit Notes

Tool to list credit notes from FreeAgent.

List EC MOSS Sales Tax Rates

Tool to retrieve EC VAT MOSS sales tax rates for a specific EU country and date.

List Estimates

Tool to list estimates in FreeAgent.

Get Default Estimates Additional Text

Tool to retrieve the default additional text for estimates.

List Final Accounts Reports

Tool to list final accounts reports for a company in FreeAgent.

List Hire Purchases

Tool to retrieve all hire purchases for the authorized FreeAgent account.

Get Default Additional Text

Tool to get the default additional text shown on all invoices.

List Notes

Tool to retrieve a list of notes for a contact or project.

List Projects

Tool to list projects in FreeAgent.

List VAT Returns

Tool to list VAT returns for a company in FreeAgent.

Show Tax Timeline

Tool to retrieve the company's tax timeline showing upcoming tax events and deadlines.

Update Bank Transaction Explanation

Tool to update a bank transaction explanation in FreeAgent.

Update Estimates Default Additional Text

Tool to update the default additional text for estimates in FreeAgent.

Convert Estimate to Invoice

Tool to convert an estimate to an invoice in FreeAgent.

Update Expense

Tool to update an existing expense in FreeAgent.

Update Invoices Default Additional Text

Tool to update the default additional text shown on all invoices.

Convert Invoice to Credit Note

Tool to convert a draft negative invoice to a credit note in FreeAgent.

Update a Journal Set

Tool to update a journal set in FreeAgent.

Update Note

Tool to update an existing note in FreeAgent.

Update Price List Item

Tool to update a price list item in FreeAgent.

Update Personal Profile

Tool to update the authenticated user's personal profile in FreeAgent.

Upload a Bank Statement

Tool to upload a bank statement to FreeAgent.

FRAMEWORKS

How to build Freeagent MCP Agent with another framework

Claude Code

Use Freeagent MCP with Claude Code

Claude Cowork

Use Freeagent MCP with Claude Cowork

OpenAI Agents SDK

Use Freeagent MCP with OpenAI Agents SDK

Claude Agent SDK

Use Freeagent MCP with Claude Agent SDK

Grok Bot

Use Freeagent MCP with Grok Bot

Codex

Use Freeagent MCP with Codex

OpenClaw

Use Freeagent MCP with OpenClaw

Hermes

Use Freeagent MCP with Hermes

Atomic Agent

Use Freeagent MCP with Atomic Agent

Google ADK

Use Freeagent MCP with Google ADK

LangChain

Use Freeagent MCP with LangChain

Vercel AI SDK

Use Freeagent MCP with Vercel AI SDK

Mastra AI

Use Freeagent MCP with Mastra AI

LlamaIndex

Use Freeagent MCP with LlamaIndex

CrewAI

Use Freeagent MCP with CrewAI

Pydantic AI

Use Freeagent MCP with Pydantic AI

MORE TOOLKITS

Explore Other Toolkits

Toolkit marketplace

Stripe

Api KeyOauth2

Stripe is a global online payments platform offering APIs for managing payments, customers, and subscriptions. Trusted by businesses for secure, efficient, and scalable payment processing worldwide.

44API

Api Key

44API is an API service for validating VAT and tax identifiers and returning company details. Use it to verify business tax data and manage account IP whitelists quickly.

Airwallex

Api Key

Airwallex is a global financial platform providing business accounts, payments, payouts, FX, and cards. Built to simplify cross-border payments and streamline financial operations for businesses.

Aiwyn Tax MCP

No Auth

Aiwyn Tax MCP is a tax estimation service powered by Aiwyn's federal and state tax engine. It helps teams estimate tax outcomes without building tax calculation logic from scratch.

FAQ

Frequently asked questions

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

Yes, you can. Autogen 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 Freeagent tools.

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

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How to integrate Freeagent MCP with Autogen

Connect Freeagent without auth hassles

Introduction

Also integrate Freeagent with

TL;DR

What is AutoGen?

What is the Freeagent 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 and create Tool Router session

Configure MCP parameters for Autogen

Create the model client and agent

Run the interactive chat loop

Complete Code

Conclusion

Supported Tools

How to build Freeagent MCP Agent with another framework

Claude Code

Claude Cowork

OpenAI Agents SDK

Claude Agent SDK

Grok Bot

Codex

OpenClaw

Hermes

Atomic Agent

Google ADK

LangChain

Vercel AI SDK

Mastra AI

LlamaIndex

CrewAI

Pydantic AI

Explore Other Toolkits

Stripe

44API

Airwallex

Aiwyn Tax MCP

Frequently asked questions

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

Can I use Tool Router MCP with Autogen?+

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

How safe is my data with Composio Tool Router?+

Start with Freeagent.It takes 30 seconds.