Get Credentials to Access GLS Shipping API

Overview

AfterShip Shipping is the best multi-carrier shipping software and API that enables you to automate shipping processes across USPS, UPS, FedEx, DHL, and 100+ other carriers. Get the required credentials and access GLS shipping API via AfterShip Shipping in just a few steps.

The current integration is with "Shop Returns Customer Plus API v3" to support returns from the following countries:
Austria (AT)
Belgium (BE)
Bulgaria (BG)
Czech Republic (CZ)
Croatia (HR)
Denmark (DK)
Estonia (EE)
Finland (FI)
France (FR)
Greece (GR)
Germany (DE)
Hungary (HU)
Ireland (IE)
Italy (IT)
Latvia (LV)
Lithuania (LT)
Luxembourg (LU)
Netherlands (NL)
Portugal (PT)
Poland (PL)
Romania (RO)
Slovenia (SI)
Slovakia (SK)
Spain (ES)
Sweden (SE)
Switzerland (CH) - only CH domestic
United Kingdom (GB) - only GB domestic

Get GLS Developer Credentials

In the next page, input the App name, description as per you preferred, scroll down to the API list to find “Shop Returns Customer Plus API v3“, click “Request“ and click “SAVE” the app.

Follow GLS guide to apply for production access: To get production access please request the respective API(s) via the developer portal. Then get in touch with your GLS sales contact and include your app id in the communication.
The “app id“ can be found from above step after the app created.

Required GLS credentials

APP ID
API Key
API Secret

Additional resources

Read GLS docs
Supported GLS service types and service options
AfterShip Shipping GLS technical support: support+shipping@aftership.com

Updated on: 16/05/2025

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