> ## Documentation Index
> Fetch the complete documentation index at: https://docs.shipstream.io/llms.txt
> Use this file to discover all available pages before exploring further.

# Get Started

Welcome to the **ShipStream Developer Center**!

This site is primarily for developers looking to integrate with the ShipStream WMS APIs. If you are looking for user documentation, please visit our [Knowledge Base](https://help.shipstream.io).

ShipStream offers two main APIs: the **[Global API](/global-api/introduction)** and the **[Merchant API](/merchant-api/introduction)**. Understanding their differences is crucial for choosing the right integration path.

## Global API vs. Merchant API

### Global API

The Global API is designed for 3PLs (Third-Party Logistics providers) or for managing warehouse operations. It provides comprehensive access to operational data and allows for broad management across multiple merchants.

**Use Cases for Global API:**

* Syncing data for all merchants into an external centralized sytstem.
* Obtaining operational data for reporting across all merchants.
* Performing daily operations outside of the Admin UI or Scanner UI.
* Integrating with ERPs (Enterprise Resource Planning) and WESs (Warehouse Execution Systems).

### Merchant API

The Merchant API is tailored for individual merchants to synchronize their e-commerce platforms, shopping carts, and other systems with their ShipStream WMS (Warehouse Management System) instance. This is ideal for merchants who work with a 3PL using ShipStream or those who self-fulfill.

**Use Cases for Merchant API:**

* Syncing shopping cart data (orders, tracking, inventory) for a single merchant.
* Creating ASNs (Advance Shipment Notifications) when resupply purchase orders are en-route.
* Integrating with e-commerce platforms and marketplaces.
* Custom workflows to modify order data or respond to shipment or tracking events.

## Obtaining API Credentials

To access either API, you will need to obtain API credentials. Please refer to the following documentation pages for detailed instructions:

* [Global API Access Tokens](https://help.shipstream.io/article/15i0ut0c8e-global-integrations#creating_a_global_api_access_token)
* [Merchant API Users and Roles](https://help.shipstream.io/article/7alo6rt6gn-api-system)