Connect Unleashed to the Rest of Your Business
Unleashed API integrations connect your inventory data to the platforms you sell, invoice and report on, so orders, stock levels and customer records move between systems automatically instead of being typed in twice. Built around your workflow, documented, and made to run without babysitting.
Eliminate Double Entry
Orders, customers, and stock updates flow automatically between your platforms.
Custom-Built for You
Every business runs differently - our integrations are tailored to your workflows, not generic templates.
Reliable Data Sync
Your team can trust that data is consistent across all systems at all times.
eComm & CRM Experts
We specialise in Shopify, WooCommerce, HubSpot, Salesforce, and more.
UK-Based Team
With roots in Northamptonshire, we have good travel access throughout the UK.
Long-Term Support
We don't just build and leave, we maintain and adapt integrations as your business evolves.
Some of our direct clients
Unleashed Connected to Your Wider Tech Stack
Shopify, WooCommerce, Xero, HubSpot, and more. Custom API integrations that keep stock accurate across every system and remove the manual data entry your team hates.
- 7+
- Years of inventory integration work
- 3-8wk
- Standard build timeline
- 100%
- Real-time stock and order sync
- 2 days
- Quote turnaround

Why Businesses Choose Zestcode for Unleashed API Integrations
We help retailers, wholesalers, and manufacturers connect Unleashed with their wider tech stack - saving time, cutting errors, and unlocking efficiency. From planning to support, everything we do is built for reliability and scalability.
- Real-Time Stock Synchronisation
- Shopify, WooCommerce & Laravel Experts
- CRM & Accounting System Integrations
- Secure, Scalable API Development
How an Unleashed Integration Works With Us
We learn what needs connecting
We start with a short call to understand how you use Unleashed, which platforms sit around it, and where your team is still moving data by hand. No jargon and no commitment, just a clear picture of what is possible and roughly what it would take.
We map the data and quote
We map exactly what moves between Unleashed and your other systems, in which direction, and what should happen in the awkward cases most projects forget. You get a fixed-price proposal with a clear scope and timeline, so there are no surprises once we begin.
We build and test on the real API
We build against the live Unleashed API in a staging environment, not a mock, so we hit the same rate limits and quirks you will see in production. Every sync is tested with messy, real-world stock and order data, and documented as we go.
We launch it and keep it running
We deploy with monitoring in place, so you know the moment a sync stops flowing. You get full documentation and optional ongoing support for when a provider changes their API or your business evolves, so the integration keeps working without you thinking about it.
Ready to connect Unleashed to your stack?
Tell us which systems need talking to Unleashed and we will come back with a fixed quote and a realistic timeline, usually within 2 working days. NDA first, no obligation.
Here's What Our Partners Say
Agencies, direct clients and long-term retainers. Rated 5* on Google.
Unleashed API Integration FAQs
Unleashed API Integration Services for Retailers, Wholesalers and Manufacturers
Unleashed holds your stock, but the value comes from what it talks to. If you are weighing up an integration, the questions worth answering are which systems can be connected to Unleashed, how the data stays consistent once real orders start flowing, and who keeps it running when something upstream changes. Here is how we handle all three.
What an Unleashed API integration actually does for you
Unleashed is strong at inventory, purchasing and production, but on its own it sits apart from your storefront, your CRM and your accounting. An integration is the bridge that lets those systems exchange data directly, on a schedule or the moment something happens, so nothing has to be exported and rekeyed.
In practice that means a web order drops into Unleashed as a sales order, stock levels push back out to your shop so you stop overselling, and new customers land in the right place with the right details. These are the small, repetitive jobs where a team quietly loses hours each week and where mistakes creep in when someone is rushing.
We treat the connection as infrastructure rather than a throwaway script. It should keep working long after you have forgotten it is there.
The platforms we connect Unleashed with
Most businesses run Unleashed alongside a mix of tools that no single vendor ties together. Day to day we connect it to ecommerce platforms, CRMs, accounting systems and bespoke internal software.
On the storefront side we work with Shopify and WooCommerce most often, whether that is a standard sync or something bespoke built through our white label Shopify development and WooCommerce development. On the CRM side we regularly link Unleashed to HubSpot and Salesforce so sales and stock share the same view of a customer.
If your platform has an API, we can almost certainly connect it to Unleashed. If it does not, there is usually still a workable route, and we will tell you plainly whether it is worth taking.
Keeping stock, orders and customers in sync
The hard part of any Unleashed integration is not moving data once, it is keeping it consistent when both systems are being updated at the same time. We start by mapping exactly what moves, in which direction, and how often: sales orders in, stock levels out, product and pricing updates, customer records, fulfilment status back to the store.
The question most projects skip is what should happen when two systems disagree, such as a stock count that differs between Unleashed and your shop, or an order edited in both places. We decide that behaviour up front so the sync has a single source of truth for each field rather than quietly overwriting the wrong one.
The result is data your team can act on without second-guessing it, because they know Unleashed and everything around it are telling the same story. If your trade orders still arrive by email and are keyed in by hand, that is a related but distinct job. See Unleashed order automation, which reads emailed and PDF purchase orders and creates the sales order in Unleashed directly, part of our wider automated order processing service.
Not sure your platform will talk to Unleashed?
Send us the systems involved and the process you are trying to automate. We will tell you honestly what Unleashed can and cannot do here, and what it would take to build.
Off-the-shelf connectors versus a custom build
Not every Unleashed integration needs custom code. There are ready-made connectors and no-code tools that handle simple, low-volume syncs, and if one genuinely covers your case we will say so rather than sell you a build.
Where they tend to fall down is volume, edge cases and control: pricing that climbs with every order synced, mappings that break on the one product that does not fit the template, and no clear view when a sync fails silently and stock drifts out of line. A custom build costs more up front and earns it back on anything high-volume or business-critical, where you need it logged, reliable and yours.
If you are currently holding Unleashed together with a chain of no-code steps, our business automation work is usually where that conversation starts.
How we build and test on the real Unleashed API
Once the data map is agreed, we build against the live Unleashed API in a staging environment rather than a mock. That way we hit the same authentication, rate limits and pagination behaviour you will see in production, instead of discovering them after go-live.
We test with awkward, real-world data on purpose: part-fulfilled orders, discontinued products, duplicate customers, negative stock. Clean data is not what breaks an integration, so we go looking for the cases that do. You get documentation explaining what was built and how, so the next developer, ours or yours, is not reverse-engineering it later.
The same approach applies whether the project is a single sync or a larger portal or platform that uses Unleashed as its stock backbone.
Support for when the API or your business changes
Unleashed and the platforms around it are not fixed. Providers deprecate endpoints, change authentication and adjust rate limits, and your own catalogue, pricing and workflows shift as you grow. An integration that was never built to be maintained is the one that fails quietly at the worst possible moment.
We build with that in mind: sensible error handling, alerting when something stops flowing, and code that is straightforward to update when a provider moves the goalposts. For teams who would rather not think about it, we offer ongoing support so monitoring and fixes are simply handled.
We are a UK team with roots in Northamptonshire, so you are dealing with the same people who built it. However you want to run it, the aim is an Unleashed integration you can trust and forget.
Partner with Zestcode for Industry Leading Quality and Reliability
Tell what you're looking for and we'll see you how we can help. Quotes are typically provided within 2 working days of the initial call.