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Every QuickBooks integration needs to start with one question: what happens when things go wrong? When Intuit’s Web Connector loses its connection while posting a transaction, a character pasted from Microsoft Word breaks invoice creation, or QuickBooks simply refused to answer because it has a modal open (yes, seriously), how does your app respond gracefully? Abstracting away SOAP servers and qbXML isn’t enough; you also need to protect your dev and support teams from an onslaught of post-launch edge cases. QuBe Sync helps with that.

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What you get

JSON in, JSON out

261 QuickBooks operations, covering customers, invoices, bills, payments, items, payroll and reports. Each one is a REST endpoint with a typed JSON body. You never write qbXML or talk SOAP.

Answers pushed to you

Each request carries a webhook URL. No matter when QuickBooks answers, QuBe Sync POSTs the result to you and retries if your endpoint is down.

Workflows for multi-step jobs

Find or create a customer, ask your app what to do about a duplicate name, then invoice it. QuBe Sync runs the whole sequence on our side.

Build without QuickBooks

A simulated connection (in beta) answers like QuickBooks Desktop within seconds and fails on demand, so you can test the unhappy paths before your customers find them.

Hosted customer onboarding

Send your customer to one link. It walks them through the Web Connector setup and sends them back to your app, connected.

Made for AI-assisted development

An MCP server and a CLI let Claude Code, Codex, Cursor, Copilot and other agents safely explore the API and build your integration without ever holding a secret.

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The hard parts, handled

QuickBooks Desktop/Enterprise integration is fundamentally an asynchronous process, with many points of failure. You can’t handle all of them in advance, but 16 years of QBD integration experience built a system that eliminates and avoids many of them. Even more importantly, it gives you the tools and transparency to quickly solve any unexpected problems that come your way.
The Web Connector speaks SOAP, authenticates with a per-company username and password, and runs sessions made of tickets, request and response rounds, and a close. QuBe Sync implements all of it. If a session dies before a request was handed to QuickBooks, that request goes back in the queue for the next one.
Requests are built from QuickBooks’ own schema, so an invalid field is rejected when you queue the request, not minutes later on your customer’s PC. Answers are parsed into snake_case JSON with real numbers, booleans and lists. The raw qbXML is still there if you want it.
Don’t let surprise inputs from users ruin your day. Requests are passed through a cleaning process that not only removes bad characters (like “Smart Quotes” from Microsoft Word, bullet points, and many others), it replaces them with the correctly encoded equivalents so your users aren’t complaining to support.
Your request stays queued and is retried on the Web Connector’s next runs for as long as it takes. QuBe Sync tells you once, with a message your customer can act on (“Please close all dialogs…”), and backs the Web Connector off so it doesn’t hammer a closed QuickBooks. How retries work.
Names have to be unique across customers, vendors, employees and other names. Updates need the record’s current edit_sequence. QuBe Sync automatically resolves many of these issues with no work on your end. QuickBooks issues that can’t be resolved are given to you with QuickBooks’ status code, a stable name such as name_in_use, extra debug information, and a message written for your end user.
A list query comes back a page at a time: QuBe Sync pages through the results for you, delivering each page as its own webhook. Pagination.
Every request, answer and webhook delivery is visible in the dashboard, and a failed delivery can be resent with one click. Your organization’s points of contact get an email when a webhook can’t be delivered, and your app gets a webhook when a connection’s requests stall.
Your integration stays sound as an ever-growing number of edge cases are handled for you with each new version of QuickBooks, QBXML, and the web connector that come out.

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How quickly answers arrive

Your customer can also click Update Selected in the Web Connector to run a sync immediately.

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Scales with you

Building is free. Create an account, use your sandbox app and simulated connections, and test against your own copy of QuickBooks at no cost. Once you launch, you pay per connection your customers are actively using, meaning its Web Connector has checked in during the past week. Sandbox and simulated connections are never billed. See pricing for current rates, or talk to us about volume.

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Start here

Quickstart

Connect a company file, send it a request and read the answer, all from the dashboard. No QuickBooks needed.

How it works

Apps, connections, requests and the Web Connector’s cycle, in one page.

Workflows

Let QuBe Sync run multi-step QuickBooks jobs for you.

API reference

Every endpoint, generated from the API itself.