SEKO Omni-Channel Logistics offers domestic and international shipping services for shipments originating in the US, Canada, Australia, and Great Britain.
This guide provides developers with the details needed to build SEKO Omni-Channel Logistics shipping capabilities into your ShipStation V2 API workflows.
| Property | Type | Required? | Description |
|---|---|---|---|
nickname | string | required | Used to identify your account in ShipStation V2 API |
username | string | required | Your SEKO account username |
api_key | string | required | Your SEKO account API key |
You must contact SEKO and request that they configure your account to be used with ShipStation V2 API. They will then provide the proper credentials to connect successfully.
- Both weight and dimensions are required for all shipments.
- SEKO requires all shipments to be manifested through the SEKO portal prior to pickup.
You can connect a SEKO Omni-Channel Logistics account using the POST method to the /v2/connections/carriers/ endpoint, or via the ShipStation dashboard.
Steps to connect via the dashboard are coming soon!
carrier_code: seko
POST /v2/connections/carriers/:carrier_code
- Productionhttps://api.shipstation.com/v2/connections/carriers/{carrier_name}
- curl
- JavaScript
- Node.js
- Python
- Java
- C#
- PHP
- Go
- Ruby
- R
- Payload
- connect_access_worldwide_request_body
- connect_amazon_buy_shipping_request_body
- connect_amazon_shipping_uk
- connect_apc_request_body
- connect_asendia_request_body
- connect_australia_post_request_body
- connect_canada_post_request_body
- connect_dhl_ecommerce_request_body
- connect_dhl_express_request_body
- connect_dhl_express_au_request_body
- connect_dhl_express_ca_request_body
- connect_dhl_express_uk_request_body
- connect_dpd_request_body
- connect_endicia_request_body
- connect_fedex_request_body
- connect_fedex_uk_request_body
- connect_firstmile_request_body
- connect_imex_request_body
- connect_lasership_request_body
- connect_newgistics_request_body
- connect_ontrac_request_body
- connect_purolator_request_body
- connect_royal_mail_request_body
- connect_rr_donnelley_request_body
- connect_seko_request_body
- connect_sendle_request_body
- connect_stamps_request_body
- connect_ups_request_body
curl -i -X POST \
https://api.shipstation.com/v2/connections/carriers/dhl_express \
-H 'Content-Type: application/json' \
-H 'api-key: YOUR_API_KEY_HERE' \
-d '{
"nickname": "Stamps.com",
"username": "your_username",
"password": "your_password"
}'A successful connection will return a response with the carrier_id, which you'll use for any requests for this account going forward.
SEKO Omni-Channel Logistics supports rate shopping (ShipEngine guide) with ShipStation V2 API.
For accounts based in Australia: the rates SEKO sends to ShipStation V2 API exclude GST.
Available SEKO Omni-Channel Logistics services are provided below. Please note that carriers may update their available services at any time. To ensure you are always using valid services, you can use the list carrier services (ShipEngine guide) endpoint at any time.
NOTE:
Available services vary based on both the origin and the destination country. Contact SEKO for details if you are uncertain whether a specific service is available for both your origin and destination.
| Service | API Code |
|---|---|
| Domestic Standard | seko_domestic_standard |
| Domestic Express | seko_domestic_express |
| Domestic Large Parcel | seko_domestic_large_parcel |
| Service | API Code |
|---|---|
| eCommerce Express Tracked | ecom_express_tracked |
| eCommerce Standard Tracked | ecom_standard_tracked |
SEKO has confirmed that they are not requiring any changes or additional data for shipments from Great Britain to Northern Ireland relating to the Windsor Framework (ShipEngine guide) that went into effect 1st May 2025.
SEKO Omni-Channel Logistics does not currently support creating return labels (ShipEngine guide) with ShipStation V2 API. Returns must be managed directly in your SEKO account portal.
SEKO Omni-Channel Logistics does not include specific carrier package types (ShipEngine guide). You can use the generic package type or custom package types (ShipEngine guide).
SEKO Omni-Channel Logistics does not support adding carrier insurance to shipments created with ShipStation V2 API.
- Label sizes: 4" x 6"
- Label formats: PDF
- Supports Unicode characters: unknown
SEKO Omni-Channel Logistics does not support adding custom label messages (ShipEngine guide).
SEKO Omni-Channel Logistics does not support creating multi-package shipments (ShipEngine guide).
SEKO Omni-Channel Logistics does not support label branding (ShipEngine guide).
SEKO Omni-Channel Logistics supports voiding labels with ShipStation V2 API.
See our Void a Label page (ShipEngine guide) for details about voiding labels with ShipStation V2 API.
SEKO Omni-Channel Logistics does not support paperless labels (ShipEngine guide).
Customs declarations are submitted electronically.
NOTE: Action Required: New Zealand Border Levy Changes
Effective April 1, 2026, a new NZD $2.21 (+ GST) levy applies to low-value air freight consignments entering New Zealand. This levy is charged per consignment, not per item.
See the Shipping to New Zealand: Low Value Goods (LVG) Levy section in International Shipments (ShipEngine guide) for full details.
| Confirmation Type | API Code | Description |
|---|---|---|
| No confirmation | none | No delivery confirmation requested |
| Signature | signature | Signature is required for the shipment to be delivered. This signature may be from a neighbor, building manager, or the recipient can authorize the release of the package (without being present). |
See our Delivery Confirmation page (ShipEngine guide) for more details about using the confirmation property.
SEKO Omni-Channel Logistics supports certain advanced options, which you can add to the shipment object when creating a shipment or label.
| Option | Type | Default Value | Description |
|---|---|---|---|
delivered_duty_paid | boolean | false | Indicates the shipment is DDP (that is, the shipper is paying the duties/taxes for the shipment rather than the recipient). |
non_machinable | boolean | false | Indicates that the package cannot be processed through sorting machines. |
To ensure you always have the most up-to-date information about a carrier's advanced options, use the list carrier options call (ShipEngine guide).
SEKO Omni-Channel Logistics requires you to manifest your shipments, prior to pick, through the SEKO portal directly. You cannot use the ShipStation V2 API manifesting (ShipEngine guide) method.
SEKO Omni-Channel Logistics does not support scheduling pickups (ShipEngine guide) using ShipStation V2 API.
You can schedule pickups with SEKO directly by calling 866-268-5263.
SEKO Omni-Channel Logistics does not support shipping to service points (ShipEngine guide).
ShipStation V2 API's integration with SEKO Omni-Channel Logistics supports receiving tracking updates. Review our Track a Package guides (ShipEngine guide) for details on tracking with the ShipStation V2 API.
See the Disconnect section in our Delete a Carrier page (ShipEngine guide) for the process of deleting or disconnecting a carrier from ShipStation V2 API.
NOTE:
If you disconnect a carrier account and reconnect it, the account will have a new
carrier_idin ShipStation V2 API.
Error: Bad Request: Bad Request TransactionID={{RANDOM STRING OF CHARACTERS}}
This error usually occurs when using the eCommerce Standard Tracked service and the cubic value exceeds the maximum carrier weight of 10.5kg. If you receive this error, you can either choose another service or split the shipment into smaller packages.