A modern API for
QuickBooks Enterprise

QuickBooks Enterprise has no separate API; it shares the QuickBooks Desktop SDK with Pro and Premier. Conductor gives it a modern one: Python, Node.js, and REST for your code, and MCP for Claude, ChatGPT, and other AI tools.

Get started >

Explore the docs >

SYNCING 1,800+ BUSINESSES

M
Miter
Pallet
SilkRoute AI
WizCommerce
Attain
CLOUDRIG

munch insights
DEV///AO

Inventory sites
and assemblies

Conductor covers the records QuickBooks Enterprise companies run on: Advanced Inventory sites and per-site quantities, assemblies and builds, sales orders, price levels, and units of measure, along with customers, vendors, invoices, bills, payments, and reports.

Your code or AI tool can look up, create, and update any record and delete any transaction, with the same calls that work for every QuickBooks Desktop edition.

npm install conductor-node

pip install conductor-py

import Conductor from "conductor-node";
const conductor = new Conductor({ apiKey: "sk_test_..." });

// Create, fetch, or update any QuickBooks Desktop object.

const invoice = await conductor.qbd.invoices.create({

conductorEndUserId: "end_usr_...",

customerId: "abc_123...",

dueDate: "2027-06-30",

lines: [{

itemId: "xyz_456...",

quantity: 5,

rate: "100.00",

}],

});

One dashboard
for every file

Each QuickBooks Enterprise company file you connect appears in the Conductor dashboard with its status and the last time QuickBooks checked in. Test any connection with one click, reset a company file that moved, and create API keys.

Works in
multi-user mode

Conductor connects through the QuickBooks Web Connector on the computer or server that runs QuickBooks Enterprise, and it keeps syncing while your team works in the company file in Multi-user Mode:

The help guides explain the Windows permission and QuickBooks pop-up problems that can stop a sync.

Hosted QuickBooks Enterprise works too, including Rightworks, Summit Hosting, and QuickBooks Enterprise with cloud access.

Errors you
can act on

QuickBooks Enterprise returns the same cryptic errors as every QuickBooks Desktop edition, from bare codes to no message at all. Conductor explains the cause and the fix in plain words and links a step-by-step guide when one exists.

Real QuickBooks Desktop errors

Error from QuickBooks DesktopNo next step

Retrieving the COM class factory for component with CLSID {45F5708E-3B43-4FA8-BE7E-A5F1849214CB} failed due to the following error: 80040154 Class not registered (Exception from HRESULT: 0x80040154 (REGDB_E_CLASSNOTREG)).

Improved error from Conductor

QuickBooks Desktop connection failed (0x80040154): We could not connect to your QuickBooks Desktop because some QuickBooks integration components on your computer are not set up correctly. This usually happens after a QuickBooks installation or update issue. To fix this, follow this guide to re-register the QuickBooks components: https://docs.conductor.is/help/connection-errors/unable-to-cast-com-object

Error from QuickBooks DesktopJust the code

Exception from HRESULT: 0x80040414

Improved error from Conductor

QuickBooks Desktop connection failed (0x80040414): We could not connect to your QuickBooks Desktop because QuickBooks is waiting for input on a pop-up or modal window. To fix this, bring QuickBooks to the foreground on the sync computer, close or respond to all open dialogs (including any hidden behind other windows), then try again. If the issue persists, close QuickBooks Desktop completely, reopen the company file, and retry.

Error from QuickBooks DesktopDoesn't say which

The specified parameters conflict with each other.

Improved error from Conductor

QuickBooks Desktop error (3153): The specified parameters conflict with each other. QuickBooks does not say which, but the known causes are a line that sets both `itemId` and `linkToTransactionLine` (omit `itemId`; the linked line supplies the item), or a vendor or customer that differs from the one on the linked transaction, such as a purchase order.

Error from QuickBooks DesktopNo message

statusMessage:

QuickBooks Desktop returns no message for this error.

Improved error from Conductor

QuickBooks Desktop error (3415): Sales tax code preference mismatch. Your request includes a tax code or sales-tax value that conflicts with the QuickBooks company file's setting 'Use Customer/Vendor Tax Codes'. Either enable or disable that QuickBooks preference to match your request, or remove the tax fields from your request, then retry.

Frequently asked questions

Does QuickBooks Enterprise have its own API?

No. QuickBooks Enterprise uses the same QuickBooks Desktop SDK and Web Connector as Pro and Premier, so the same Conductor API calls work with every edition.

Which versions of QuickBooks Enterprise does Conductor support?

Conductor supports every version and year of QuickBooks Enterprise Solutions, in every industry edition: Accountant, Contractor, Manufacturing and Wholesale, Nonprofit, Professional Services, and Retail.

Does Conductor support Advanced Inventory?

Yes. Conductor reads inventory sites and each item’s quantity at every site, and transaction lines carry their site, bin location, and serial or lot number.

Does the connection use one of my QuickBooks Enterprise licenses?

Only during a sync, if you leave QuickBooks Enterprise at the “No Company Open” screen. Between syncs the license is free, and your team can still open the company file in Single-user Mode.

Can Claude or ChatGPT work with QuickBooks Enterprise?

Yes. Conductor’s MCP server at mcp.conductor.is connects QuickBooks Enterprise to Claude, ChatGPT, Cursor, and other AI tools, which can then look up, create, and update your data.

How does Conductor handle large QuickBooks Enterprise company files?

List requests return results in pages and can filter by date or by last-modified time, so you can sync a large company file in small pieces instead of one slow request.