API integration fulfillment that fits your custom stack
Handled connects to your API, headless checkout, OMS, or ERP so fulfillment runs inside the system you already built. Orders, tracking, routing, kits, and updates follow your rules from day one.
Fulfillment logic your developers can control
Keep your operational rules in the stack you already run. Handled connects the warehouse work to your order logic, tracking updates, kit rules, and shipping decisions without forcing a canned connector.
Your system stays the source of truth
Orders, inventory updates, and shipment status move through the integration, so your team is not reconciling a warehouse portal against your OMS.
Warehouse rules follow your logic
Set how orders route, split, hold, or ship before they reach the floor; we execute those rules instead of replacing them with a fixed workflow.
Order changes reach the floor in time
Cancel, edit, or update an order before it ships through your integration, with the warehouse working from the latest instruction.
Kits and bundles do not need manual handoffs
Multi-SKU kits, bundles, and promos can trigger from incoming API orders, so the build rules travel with the order.
Fast, affordable 2-day delivery from port to doorstep
With facilities near Los Angeles and New York City—close to major ports and population centers—we help you move inventory in faster and reach customers affordably in 2 days or less. Whether you're scaling on one coast or both, we've got you covered.
Close to your imports
Both facilities sit near major ports, so imported stock moves from freight to sellable faster and cheaper — less drayage.
Close to your customers
Inventory on both coasts reaches most U.S. shoppers in one to two days by ground — faster delivery at lower shipping cost.
Stay in control of fulfillment
Choose your warehouse location, walk the floor anytime, and meet your team in person — East, West, or both. Your call, not ours.
Wire in over the API alongside every channel you sell on
Handled connects to carts, marketplaces, EDI networks, OMS/IMS, and carriers, and the same live sync runs through your custom API integration. Orders, inventory, tracking, and returns stay in one live view across every channel, so nothing happens in a black box.
Sync orders live over the API
Handled pulls orders from your custom or headless stack the moment your checkout writes them — no queue, no manual upload, no re-keying.
Push tracking back automatically
Shipment and tracking data write back to your stack the instant an order ships, over the same API the orders came in on.
Route orders on your logic
Your engineering team defines the routing rules; we execute them on every API order across both coasts.
Connect your OMS or ERP
Your system of record stays authoritative — we sync orders, inventory, and tracking both directions and adapt to its data model.
Make changes in real-time
Cancel or update any order over your integration before it ships — edits to items, address, or packaging flow through instantly.
Split shipments seamlessly
Split or route items across both coasts yourself, no extra setup required.
A real, reachable team behind your integration warehouse
Your API integration warehouse comes with a named brand ambassador on the floor - a real person watching your orders, not a ticket queue.
Dedicated brand ambassador
A named person who knows your SOPs, routing rules, and packaging spec, and enforces them on every order that flows in over your API.
Eyes on the floor
They watch your inventory arrive, your kits get built, and your orders ship - flagging and fixing issues before your customer feels them.
Reachable anytime
A direct line by Slack, phone, or in person - the antidote to a support ticket you file and wait on.
Scaling, omnichannel brands trust Handled
Brands running serious volume across custom stacks and marketplaces on how Handled runs their fulfillment.
If you want top notch service and reliability, Handled Commerce is for you. We have used Hook Logistics/Handled since 2020 and are so happy we made the change. What a difference a great partner makes!
Fantastic team! I wanted to have a 3PL that was transparent, responsive and priced fairly. Handled Commerce covered everything I was looking for.
I've had challenging experiences with fulfillment since we started our company over a decade ago. But Handled is the first logistics company that I have been impressed with, that has provided consistent service, and has integrity.
10/10 — would recommend to any of my brand friends with a fast growing DTC business! Everything from kitting projects to small parcel shipments to pallet deliveries, they have got you covered.
Extremely satisfied, very happy for the end to end service they provide and the personal touch by Claudia, Shawn and Kevin is always much appreciated.
Fulfillment shaped to your spec, not a template
The giants make you fit their box. With Handled, every order that comes in over your API ships exactly how you defined it.
Ecommerce Fulfillment
Pick, pack, and ship D2C orders to your standards, driven live by API order data.
Kitting & Bundles
Multi-SKU kits and bundles assembled to your rules as API orders come in - no manual hand-off.
Branded Packaging
Custom boxes, tissue, and inserts built to your spec on every order.
Returns
Branded returns processed to your policy, with restock visibility written back to your stack.
Omnichannel Fulfillment
One operation across your custom store, carts, and marketplaces - counts stay in sync.
Special Projects
One-off work outside the template - if you can describe it, we'll handle it.
If you can describe it, we'll handle it.
One live view across every channel you sell on
Orders, inventory, tracking, and returns sync in real time across your custom stack and every cart and marketplace - centralized counts, no overselling, no re-keying, nothing in a black box.
The three guarantees we put in writing
Handing off fulfillment shouldn't mean hoping it goes well. Our core commitments are written into your contract — and if we miss, we cover the cost to fix it. Proof that handing off doesn't mean losing control.
100% Same-Day Shipping
Orders received by 12 PM ship the same day — or we make it right.
100% Order Accuracy
If we pick or pack it wrong, we cover the cost to fix it.
100% Same-Day Restocks
Out-of-stock items are restocked the day inventory arrives.
Simple, transparent eCommerce fulfillment pricing
No surprise fees. No minimums. Just pricing that grows with you — and scales when you scale.
Your inventory is stored securely and efficiently, with monthly pallet-based pricing you only pay for the space you need.
- Pallet, shelf, and bin storage
- Climate-controlled, secure facility
- Real-time inventory visibility
- Scale up or down anytime
Every order is picked and packed with care, with per-order pricing your costs rise only when your volume does.
- Same-day shipping by 12 PM
- 100% order accuracy guarantee
- Branded packaging & inserts
- Returns processing included
- Real-time order & inventory sync
We optimize every order for speed and savings, with per-shipment pricing based on the carrier and service level used.
- USPS, UPS, FedEx & DHL
- Carrier rate shopping per order
- 1–2 day ground across your home region
- Tracking writeback to your store
Special Projects: From kitting to custom prep work, our per-project pricing is based on the complexity and scope of each project.
API integration fulfillment questions, answered
01How does a custom integration 3PL connect to my OMS or ERP?
We wire directly into your custom OMS, ERP, or homegrown checkout over the API - no canned cart connector required. Orders sync into our system in real time as they land, so nothing gets re-keyed and nothing sits in a queue you can't see.
02Do you support a custom or headless checkout with your API integration warehouse?
Yes. Our API integration warehouse is built for headless and custom stacks. Whatever your checkout runs on, orders flow in live over the integration, inventory stays synced across channels, and tracking writes back automatically the instant each order ships.
03Can I set my own order routing rules through the API?
Yes. Orders auto-assign to the fulfillment center your logic picks - the routing rules are yours, not a black box. You define how orders split or route across locations to cut shipping time and cost, with no extra setup on our side.
04Can I cancel or update an API order before it ships?
Yes. Cancel or change any order instantly through your integration, right up until it ships. Orders placed by 12 PM ship the same day with 100% accuracy guaranteed, and if we make a mistake, Handled covers the cost to fix it.
05How do I switch to a custom integration 3PL from my current provider?
A dedicated person runs the whole switch for you, so you're never project-managing it. We map your existing routing rules, packaging, and SOPs, wire into your stack, and get real-time sync live from day one. Request a quote and we'll respond within 24 hours.
Wire your custom stack into a 3PL that syncs live
Real-time order sync, automatic tracking writeback, and routing on your rules - all shaped around how your engineering team already works. Get a quote in 24 hours.
Get your API integration quote
A few details and we'll write back within 15 minutes.