How to integrate Quickbooks MCP with LlamaIndex

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Introduction

This guide walks you through connecting Quickbooks to LlamaIndex using the Composio tool router. By the end, you'll have a working Quickbooks agent that can add a new customer with contact details, generate a balance report for customer abc, create a vendor for monthly office supplies through natural language commands.

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

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

Also integrate Quickbooks with

TL;DR

Here's what you'll learn:
  • Set your OpenAI and Composio API keys
  • Install LlamaIndex and Composio packages
  • Create a Composio Tool Router session for Quickbooks
  • Connect LlamaIndex to the Quickbooks MCP server
  • Build a Quickbooks-powered agent using LlamaIndex
  • Interact with Quickbooks through natural language

What is LlamaIndex?

LlamaIndex is a data framework for building LLM applications. It provides tools for connecting LLMs to external data sources and services through agents and tools.

Key features include:

  • ReAct Agent: Reasoning and acting pattern for tool-using agents
  • MCP Tools: Native support for Model Context Protocol
  • Context Management: Maintain conversation context across interactions
  • Async Support: Built for async/await patterns

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

The Quickbooks MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Quickbooks account. It provides structured and secure access to your accounting data, so your agent can perform actions like managing customers, generating balance reports, creating accounts, and retrieving employee details on your behalf.

  • Customer and vendor management: Quickly create new customers or vendors, or retrieve detailed information about existing ones to streamline your business relationships.
  • Automated account creation and queries: Direct your agent to set up new financial accounts or query existing ones for up-to-date balances and account information.
  • Employee records and management: Seamlessly add new employees or pull employee details to keep your Quickbooks records accurate and current.
  • Financial reporting and insights: Generate customer balance reports or detailed balance breakdowns, giving you instant access to critical financial insights with just a prompt.

Supported Tools & Triggers

Tools
Capture ChargeTool to capture funds for an existing charge that was authorized but not captured.
Create AccountCreate a new account in QuickBooks with the given parameters.
Create Bank AccountCreate a new bank account on file for a customer in QuickBooks Payments API.
Create BillCreate a new bill in QuickBooks Online.
Create Bill PaymentCreate a bill payment in QuickBooks to record payment against one or more bills.
Create ClassCreate a new class in QuickBooks Online.
Create Credit MemoTool to create a new credit memo in QuickBooks Online.
Create CustomerCreate a new customer in QuickBooks with the given parameters.
Create DepositCreates a new deposit in QuickBooks Online.
Create eCheck PaymentTool to create an eCheck payment using ACH bank transfer in QuickBooks Payments API.
Create EmployeeCreate a new employee in QuickBooks.
Create EstimateCreates a new estimate in QuickBooks Online.
Create InvoiceCreates a new invoice in QuickBooks for a customer.
Create ItemCreate a new item in QuickBooks Online.
Create Journal EntryTool to create a new journal entry in QuickBooks Online.
Create PaymentCreates a payment record in QuickBooks Online.
Create PurchaseTool to create a new purchase transaction in QuickBooks Online.
Create Purchase OrderCreate a new purchase order in QuickBooks.
Create Refund ReceiptTool to create a new refund receipt in QuickBooks Online.
Create Sales ReceiptTool to create a new sales receipt in QuickBooks Online.
Create Tax AgencyCreate a new tax agency in QuickBooks Online.
Create Tax Code via TaxServiceCreate a new tax code with associated tax rates using the TaxService endpoint.
Create Time ActivityCreate a new time activity record in QuickBooks Online.
Create VendorCreate a new vendor in QuickBooks with the given details.
Create Vendor CreditTool to create a new vendor credit in QuickBooks Online.
Customer Balance DetailGenerate a balance detail report for a customer in QuickBooks with the given customer ID.
Customer Balance ReportGenerate a customer balance report in QuickBooks showing outstanding balances for customers.
Delete Bank AccountTool to delete a bank account on file for a customer in QuickBooks Payments API.
Execute Batch OperationExecute multiple QuickBooks operations in a single request.
Aged Receivables ReportGenerate an aged receivables report showing outstanding customer balances by age.
Get AttachableTool to read details of a specific attachable by ID in QuickBooks Online.
Get Balance Sheet ReportGenerate a Balance Sheet report showing company assets, liabilities, and equity at a point in time.
Get Bank AccountTool to retrieve a specific bank account by ID from QuickBooks Payments API.
Get BillTool to fetch a QuickBooks bill by ID.
Get Bill PaymentTool to retrieve details of a specific bill payment by ID in QuickBooks Online.
Get Changed EntitiesTool to retrieve entities that changed since a specified timestamp using QuickBooks Change Data Capture (CDC) API.
Get Company InfoTool to read company information from QuickBooks Online.
Get Credit MemoTool to fetch a QuickBooks credit memo by ID.
Get Credit Memo PDFTool to download a QuickBooks credit memo as a PDF file.
Get DepartmentRead details of a specific department by ID in QuickBooks Online.
Get DepositTool to read details of a specific deposit by ID in QuickBooks Online.
Get EstimateTool to fetch a QuickBooks estimate by ID.
Get Estimate PDFTool to download a QuickBooks estimate as a PDF file.
Get Exchange RateTool to get exchange rate for a specific currency code and date in QuickBooks Online.
Get General Ledger ReportGenerate a General Ledger report showing all transactions with debits, credits, and running balances.
Get Inventory Valuation SummaryGenerate an Inventory Valuation Summary report showing inventory quantities and their current values.
Get Invoice PDFTool to download a QuickBooks invoice as a PDF file.
Get ItemTool to retrieve a specific item by its ID from QuickBooks Online.
Get Journal EntryTool to read details of a specific QuickBooks journal entry by ID.
Get PaymentTool to fetch details of a specific payment by ID in QuickBooks Online.
Get Payment MethodRead details of a specific payment method by ID in QuickBooks Online.
Get Payment PDFTool to download a QuickBooks payment record as a PDF file.
Get Company PreferencesTool to read company preferences that control application behavior in QuickBooks Online.
Get Profit and Loss Detail ReportGenerate a detailed Profit and Loss report showing company income and expenses with transaction-level details.
Get Profit and Loss ReportGenerate a Profit and Loss report showing company income and expenses over a period.
Get PurchaseTool to fetch details of a specific purchase by ID in QuickBooks Online.
Get Purchase OrderTool to fetch a QuickBooks purchase order by ID.
Get Purchase Order PDFTool to download a QuickBooks purchase order as a PDF file.
Get Refund ReceiptTool to fetch a QuickBooks refund receipt by ID.
Get Refund Receipt PDFTool to download a QuickBooks refund receipt as a PDF file.
Get Report - Account ListRetrieve the AccountList report from QuickBooks showing a list of all accounts.
Get Report - Aged Payable DetailGenerate an aged payable detail report showing aging detail for accounts payable.
Get Report - Aged PayablesRetrieve an Aged Payables aging summary report from QuickBooks showing outstanding vendor balances grouped by age.
Get Report - Aged Receivable DetailGenerate an aged receivable detail report showing aging detail for accounts receivable.
Get Report - Cash FlowGenerate a cash flow report in QuickBooks showing cash inflows and outflows categorized by operating, investing, and financing activities.
Get Report - Class SalesGenerate a ClassSales report in QuickBooks showing sales amounts grouped by class.
Get Report - Customer IncomeGenerate a customer income report in QuickBooks showing revenue by customer.
Get Report - Customer SalesGenerate a customer sales report in QuickBooks showing sales transactions and totals for customers.
Get Report - Department SalesGenerate a department sales report in QuickBooks showing sales data broken down by department.
Get Report - Item SalesGenerate an ItemSales report showing sales data for products and services.
Get ReportsRetrieve QuickBooks reports such as TransactionList, BalanceSheet, ProfitAndLoss, and others.
Get Report - Trial BalanceGenerate a Trial Balance report showing account debits, credits, and balances for a specified period.
Get Sales ReceiptTool to fetch a QuickBooks sales receipt by ID.
Get Sales Receipt PDFTool to download a QuickBooks sales receipt as a PDF file.
Get Tax RateTool to read details of a specific tax rate by ID in QuickBooks Online.
Get TermRead details of a specific payment term by ID in QuickBooks Online.
Get Time ActivityTool to read details of a specific time activity by ID in QuickBooks Online.
Get Transaction List ReportGet the Transaction List report showing all transactions in the company.
Get TransferTool to fetch a QuickBooks transfer by ID.
Get Vendor CreditTool to fetch a QuickBooks vendor credit by ID.
Get Vendor Expenses ReportRetrieve a vendor expenses report from QuickBooks showing expense transactions by vendor.
List CardsTool to retrieve all payment cards on file for a customer in QuickBooks Payments API.
List DepartmentsQuery Department entities in QuickBooks using SQL-like syntax.
List InvoicesTool to list invoices via QuickBooks Query endpoint.
Query Account EntitiesQuery Account entities in QuickBooks using SQL-like syntax.
Query Attachable EntitiesQuery Attachable entities in QuickBooks using SQL-like syntax.
Query QuickBooks EntitiesExecute SQL-like queries on QuickBooks Online entities.
Read AccountRead an account in QuickBooks with the given account ID.
Read ClassRead details of a specific class by ID in QuickBooks Online.
Read CustomerRead a customer in QuickBooks with the given customer ID.
Read EmployeeRead an employee's details in QuickBooks with the given employee ID.
Read InvoiceTool to fetch a QuickBooks invoice by ID or the most recent if no ID provided.
Read VendorRead a vendor in QuickBooks with the given vendor ID.
Send Credit MemoTool to send a credit memo to a specified email address.
Update AttachableTool to update an existing attachable in QuickBooks Online.
Update Company InfoTool to update company information in QuickBooks Online.
Update DepartmentTool to update an existing department in QuickBooks Online.
Update Full InvoiceTool to fully replace an Invoice.
Update Payment MethodTool to update an existing payment method in QuickBooks Online.
Update PreferencesUpdate company preferences in QuickBooks Online.
Update Sparse InvoiceTool to perform a sparse update of an existing invoice.
Update TermTool to update an existing payment term in QuickBooks Online.
Update TransferTool to update an existing transfer in QuickBooks Online.
Vendor Balance DetailGenerate a balance detail report for a vendor in QuickBooks with the given vendor ID.
Vendor Balance ReportRetrieve a vendor balance report from QuickBooks showing outstanding balances for vendors.

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

Prerequisites

Before you begin, make sure you have:
  • Python 3.8/Node 16 or higher installed
  • A Composio account with the API key
  • An OpenAI API key
  • A Quickbooks account and project
  • Basic familiarity with async Python/Typescript

Getting API Keys for OpenAI, Composio, and Quickbooks

OpenAI API key (OPENAI_API_KEY)
  • Go to the OpenAI dashboard
  • Create an API key if you don't have one
  • Assign it to OPENAI_API_KEY in .env
Composio API key and user ID
  • Log into the Composio dashboard
  • Copy your API key from Settings
    • Use this as COMPOSIO_API_KEY
  • Pick a stable user identifier (email or ID)
    • Use this as COMPOSIO_USER_ID

Installing dependencies

pip install composio-llamaindex llama-index llama-index-llms-openai llama-index-tools-mcp python-dotenv

Create a new Python project and install the necessary dependencies:

  • composio-llamaindex: Composio's LlamaIndex integration
  • llama-index: Core LlamaIndex framework
  • llama-index-llms-openai: OpenAI LLM integration
  • llama-index-tools-mcp: MCP client for LlamaIndex
  • python-dotenv: Environment variable management

Set environment variables

bash
OPENAI_API_KEY=your-openai-api-key
COMPOSIO_API_KEY=your-composio-api-key
COMPOSIO_USER_ID=your-user-id

Create a .env file in your project root:

These credentials will be used to:

  • Authenticate with OpenAI's GPT-5 model
  • Connect to Composio's Tool Router
  • Identify your Composio user session for Quickbooks access

Import modules

import asyncio
import os
import dotenv

from composio import Composio
from composio_llamaindex import LlamaIndexProvider
from llama_index.core.agent.workflow import ReActAgent
from llama_index.core.workflow import Context
from llama_index.llms.openai import OpenAI
from llama_index.tools.mcp import BasicMCPClient, McpToolSpec

dotenv.load_dotenv()

Create a new file called quickbooks_llamaindex_agent.py and import the required modules:

Key imports:

  • asyncio: For async/await support
  • Composio: Main client for Composio services
  • LlamaIndexProvider: Adapts Composio tools for LlamaIndex
  • ReActAgent: LlamaIndex's reasoning and action agent
  • BasicMCPClient: Connects to MCP endpoints
  • McpToolSpec: Converts MCP tools to LlamaIndex format

Load environment variables and initialize Composio

OPENAI_API_KEY = os.getenv("OPENAI_API_KEY")
COMPOSIO_API_KEY = os.getenv("COMPOSIO_API_KEY")
COMPOSIO_USER_ID = os.getenv("COMPOSIO_USER_ID")

if not OPENAI_API_KEY:
    raise ValueError("OPENAI_API_KEY is not set in the environment")
if not COMPOSIO_API_KEY:
    raise ValueError("COMPOSIO_API_KEY is not set in the environment")
if not COMPOSIO_USER_ID:
    raise ValueError("COMPOSIO_USER_ID is not set in the environment")

What's happening:

This ensures missing credentials cause early, clear errors before the agent attempts to initialise.

Create a Tool Router session and build the agent function

async def build_agent() -> ReActAgent:
    composio_client = Composio(
        api_key=COMPOSIO_API_KEY,
        provider=LlamaIndexProvider(),
    )

    session = composio_client.create(
        user_id=COMPOSIO_USER_ID,
        toolkits=["quickbooks"],
    )

    mcp_url = session.mcp.url
    print(f"Composio MCP URL: {mcp_url}")

    mcp_client = BasicMCPClient(mcp_url, headers={"x-api-key": COMPOSIO_API_KEY})
    mcp_tool_spec = McpToolSpec(client=mcp_client)
    tools = await mcp_tool_spec.to_tool_list_async()

    llm = OpenAI(model="gpt-5")

    description = "An agent that uses Composio Tool Router MCP tools to perform Quickbooks actions."
    system_prompt = """
    You are a helpful assistant connected to Composio Tool Router.
    Use the available tools to answer user queries and perform Quickbooks actions.
    """
    return ReActAgent(tools=tools, llm=llm, description=description, system_prompt=system_prompt, verbose=True)

What's happening here:

  • We create a Composio client using your API key and configure it with the LlamaIndex provider
  • We then create a tool router MCP session for your user, specifying the toolkits we want to use (in this case, quickbooks)
  • The session returns an MCP HTTP endpoint URL that acts as a gateway to all your configured tools
  • LlamaIndex will connect to this endpoint to dynamically discover and use the available Quickbooks tools.
  • The MCP tools are mapped to LlamaIndex-compatible tools and plug them into the Agent.

Create an interactive chat loop

async def chat_loop(agent: ReActAgent) -> None:
    ctx = Context(agent)
    print("Type 'quit', 'exit', or Ctrl+C to stop.")

    while True:
        try:
            user_input = input("\nYou: ").strip()
        except (KeyboardInterrupt, EOFError):
            print("\nBye!")
            break

        if not user_input or user_input.lower() in {"quit", "exit"}:
            print("Bye!")
            break

        try:
            print("Agent: ", end="", flush=True)
            handler = agent.run(user_input, ctx=ctx)

            async for event in handler.stream_events():
                # Stream token-by-token from LLM responses
                if hasattr(event, "delta") and event.delta:
                    print(event.delta, end="", flush=True)
                # Show tool calls as they happen
                elif hasattr(event, "tool_name"):
                    print(f"\n[Using tool: {event.tool_name}]", flush=True)

            # Get final response
            response = await handler
            print()  # Newline after streaming
        except KeyboardInterrupt:
            print("\n[Interrupted]")
            continue
        except Exception as e:
            print(f"\nError: {e}")

What's happening here:

  • We're creating a direct terminal interface to chat with your Quickbooks database
  • The LLM's responses are streamed to the CLI for faster interaction.
  • The agent uses context to maintain conversation history
  • You can type 'quit' or 'exit' to stop the chat loop gracefully
  • Agent responses and any errors are displayed in a clear, readable format

Define the main entry point

async def main() -> None:
    agent = await build_agent()
    await chat_loop(agent)

if __name__ == "__main__":
    # Handle Ctrl+C gracefully
    signal.signal(signal.SIGINT, lambda s, f: (print("\nBye!"), exit(0)))
    try:
        asyncio.run(main())
    except KeyboardInterrupt:
        print("\nBye!")

What's happening here:

  • We're orchestrating the entire application flow
  • The agent gets built with proper error handling
  • Then we kick off the interactive chat loop so you can start talking to Quickbooks

Run the agent

npx ts-node llamaindex-agent.ts

When prompted, authenticate and authorise your agent with Quickbooks, then start asking questions.

Complete Code

Here's the complete code to get you started with Quickbooks and LlamaIndex:

import asyncio
import os
import signal
import dotenv

from composio import Composio
from composio_llamaindex import LlamaIndexProvider
from llama_index.core.agent.workflow import ReActAgent
from llama_index.core.workflow import Context
from llama_index.llms.openai import OpenAI
from llama_index.tools.mcp import BasicMCPClient, McpToolSpec

dotenv.load_dotenv()

OPENAI_API_KEY = os.getenv("OPENAI_API_KEY")
COMPOSIO_API_KEY = os.getenv("COMPOSIO_API_KEY")
COMPOSIO_USER_ID = os.getenv("COMPOSIO_USER_ID")

if not OPENAI_API_KEY:
    raise ValueError("OPENAI_API_KEY is not set")
if not COMPOSIO_API_KEY:
    raise ValueError("COMPOSIO_API_KEY is not set")
if not COMPOSIO_USER_ID:
    raise ValueError("COMPOSIO_USER_ID is not set")

async def build_agent() -> ReActAgent:
    composio_client = Composio(
        api_key=COMPOSIO_API_KEY,
        provider=LlamaIndexProvider(),
    )

    session = composio_client.create(
        user_id=COMPOSIO_USER_ID,
        toolkits=["quickbooks"],
    )

    mcp_url = session.mcp.url
    print(f"Composio MCP URL: {mcp_url}")

    mcp_client = BasicMCPClient(mcp_url, headers={"x-api-key": COMPOSIO_API_KEY})
    mcp_tool_spec = McpToolSpec(client=mcp_client)
    tools = await mcp_tool_spec.to_tool_list_async()

    llm = OpenAI(model="gpt-5")
    description = "An agent that uses Composio Tool Router MCP tools to perform Quickbooks actions."
    system_prompt = """
    You are a helpful assistant connected to Composio Tool Router.
    Use the available tools to answer user queries and perform Quickbooks actions.
    """
    return ReActAgent(
        tools=tools,
        llm=llm,
        description=description,
        system_prompt=system_prompt,
        verbose=True,
    );

async def chat_loop(agent: ReActAgent) -> None:
    ctx = Context(agent)
    print("Type 'quit', 'exit', or Ctrl+C to stop.")

    while True:
        try:
            user_input = input("\nYou: ").strip()
        except (KeyboardInterrupt, EOFError):
            print("\nBye!")
            break

        if not user_input or user_input.lower() in {"quit", "exit"}:
            print("Bye!")
            break

        try:
            print("Agent: ", end="", flush=True)
            handler = agent.run(user_input, ctx=ctx)

            async for event in handler.stream_events():
                # Stream token-by-token from LLM responses
                if hasattr(event, "delta") and event.delta:
                    print(event.delta, end="", flush=True)
                # Show tool calls as they happen
                elif hasattr(event, "tool_name"):
                    print(f"\n[Using tool: {event.tool_name}]", flush=True)

            # Get final response
            response = await handler
            print()  # Newline after streaming
        except KeyboardInterrupt:
            print("\n[Interrupted]")
            continue
        except Exception as e:
            print(f"\nError: {e}")

async def main() -> None:
    agent = await build_agent()
    await chat_loop(agent)

if __name__ == "__main__":
    # Handle Ctrl+C gracefully
    signal.signal(signal.SIGINT, lambda s, f: (print("\nBye!"), exit(0)))
    try:
        asyncio.run(main())
    except KeyboardInterrupt:
        print("\nBye!")

Conclusion

You've successfully connected Quickbooks to LlamaIndex through Composio's Tool Router MCP layer. Key takeaways:
  • Tool Router dynamically exposes Quickbooks tools through an MCP endpoint
  • LlamaIndex's ReActAgent handles reasoning and orchestration; Composio handles integrations
  • The agent becomes more capable without increasing prompt size
  • Async Python provides clean, efficient execution of agent workflows
You can easily extend this to other toolkits like Gmail, Notion, Stripe, GitHub, and more by adding them to the toolkits parameter.

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FAQ

What are the differences in Tool Router MCP and Quickbooks MCP?

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

Can I use Tool Router MCP with LlamaIndex?

Yes, you can. LlamaIndex 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 Quickbooks tools.

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

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

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