ShipStation for Developers: Unlocking Advanced Shipping Automation & Customization

Efficient shipping and order fulfillment are essential drivers of success in today’s competitive e-commerce landscape. From small online shops to large enterprise operations, businesses seek ways to reduce costs, speed up deliveries, and enhance customer satisfaction. Leveraging technology, especially through robust APIs, enables these goals by automating workflows and providing tailored solutions.

ShipStation offers a powerful platform not only for managing logistics but also for developers eager to create seamless, customized shipping integrations. Its comprehensive ShipStation API and developer tools open doors to automating processes, integrating with existing systems, and elevating the customer experience.

This guide explores how developers can harness the ShipStation API, understand its capabilities, and build advanced shipping solutions that scale with business needs.

Table of Contents

Introduction: Transforming Shipping Operations

In the fast-paced world of e-commerce, delivering orders efficiently and accurately is critical. Manual shipping processes can be time-consuming and prone to errors, impacting customer satisfaction and operational costs. ShipStation simplifies this landscape, providing a SaaS platform that consolidates order management, carrier integrations, label printing, and tracking into a single, streamlined system.

For developers, the real power lies in extending and automating these functionalities through the ShipStation API. Whether integrating with custom warehouse systems, automating label creation, or building bespoke tracking solutions, the ShipStation developer API offers the tools needed to innovate and optimize.

Understanding ShipStation’s API Ecosystem

ShipStation functions as a comprehensive shipping hub, supporting over 200 carriers worldwide and enabling businesses to manage multiple sales channels effortlessly. Its API ecosystem is designed for flexibility and scalability:

  • ShipStation Companion API & ShipStation API (formerly ShipEngine): ShipStation provides robust API solutions. The ShipStation Companion API works in tandem with the main ShipStation application, allowing developers to further customize and extend their workflows. The ShipStation API (which was formerly known as ShipEngine) offers end-to-end, stand-alone shipping API capabilities with extensive developer functionality for features like order management, rate calculation, label creation, and tracking.
  • API Documentation & Support: Comprehensive API documentation guides developers through endpoints, authentication, and best practices. Resources often include examples to facilitate testing and development, and developers can use tools like Postman to interact with the APIs.

Note: ShipStation is evolving towards consolidating its API offerings into a unified, more powerful API, enhancing developer experience.

Core API Features for Developers

The ShipStation REST API exposes a broad set of functionalities vital for custom shipping solutions:

Orders API

Manage and synchronize order data across platforms. Retrieve, create, or update orders with ease, ensuring your system stays current.

Rates API

Compare carrier rates dynamically to select the most cost-effective shipping options, integrating seamlessly into your checkout or fulfillment processes.

Labels API

Generate shipping labels programmatically, supporting batch processing for high-volume fulfillment. Automate label printing workflows to reduce manual steps.

Tracking API & Webhooks

Access real-time shipment status updates and automate customer notifications. Use ShipStation webhooks to trigger actions based on shipment events, enhancing transparency.

Customs & International API

Simplify international shipping by automating customs declaration creation, HS code assignment, and duty calculations. Support options like Delivered Duty Paid (DDP), where the seller arranges for the payment of duties, and manage export compliance requirements.

Address Validation API

Reduce delivery failures through integrated address verification, ensuring packages reach the correct destinations.

Product & Inventory APIs

Maintain accurate product data, manage stock levels, and synchronize inventory across multiple sales channels, preventing overselling and stockouts.

For detailed ShipStation API reference, including endpoints, request formats, and sample code, consult the official ShipStation API docs.

Advanced Customization & Automation

ShipStation empowers businesses with sophisticated automation capabilities:

  • Workflows & Rules: Define rules to automatically select carriers, services, and package types based on order data. Automate label generation, customs documentation, and more.
  • Order Routing & Splitting: Optimize fulfillment by routing orders to the best warehouse or splitting shipments for faster delivery.
  • Custom Packaging & Dangerous Goods: Support custom package dimensions and handle hazardous materials with appropriate documentation.
  • Third-Party Billing & Freight Shipping: Enable billing to third-party accounts or integrate freight carriers like FedEx Freight or UPS LTL.
  • Dropshipping & Multi-Channel Management: Use Dropship Manager Add-On to streamline vendor delegation and manage complex dropshipping workflows.
  • Branding & Customer Experience: Customize packing slips, tracking pages, and notifications to reinforce branding and improve customer satisfaction.

These features can be extended through the API, enabling ShipStation developer to craft tailored solutions that meet specific operational needs.

International Shipping Made Easy

Expanding into global markets introduces challenges like customs compliance, duties, taxes, and diverse regulations. ShipStation simplifies these complexities:

  • Automated Customs Documentation: Generate declarations and commercial invoices automatically.
  • HS Codes & TINs: Assign harmonized codes and tax identification numbers to facilitate customs clearance.
  • Duties & Taxes Management: Streamline the handling of duties and taxes, including support for Delivered Duty Paid (DDP) arrangements, where the seller takes responsibility for paying import duties and taxes. This provides customers with a more predictable landed cost.
  • Multi-Carrier Rate Comparison: Use real-time rate quotes to balance cost and speed.
  • Tracking & Compliance: Provide transparent, real-time tracking updates and navigate country-specific shipping requirements, including APO/FPO addresses and shipments to US territories.

The platform’s robust API support and comprehensive documentation are invaluable resources for developers to troubleshoot any integration challenges and maintain smooth international operations.

Getting Started as a ShipStation Developer

Embarking on API integration begins with the following steps:

  1. Sign Up & Trial: Register for a free trial to explore the platform’s capabilities.
  2. API Key Generation: Obtain your ShipStation API key through your account settings for authentication.
  3. Explore Documentation: Review the comprehensive ShipStation API docs, which include endpoints, use cases, and ShipStation API examples.
  4. Test with Developer Tools: Utilize common API development tools like Postman to simulate requests and validate workflows during your integration process.
  5. Build & Iterate: Develop your custom integrations, leveraging the detailed ShipStation API reference to ensure compliance and robustness.

Support & Resources:

  • Access the ShipStation Help Center and community forums for troubleshooting.
  • Engage with ShipStation API support for technical assistance.
  • Explore ShipStation API support channels for advanced queries.

Frequently Asked Questions

What core functions does the ShipStation API provide?

The API offers comprehensive order management, rate comparison, label printing, tracking, customs documentation, address validation, and inventory synchronization.

How does the API support international shipping?

It automates customs forms, HS code assignment, duty calculations, and provides real-time international tracking, simplifying cross-border logistics.

Can I automate shipping workflows?

Yes. Automation rules, combined with API capabilities, enable automatic carrier selection, label generation, and customer notifications.

What carriers are supported?

Over 200 global carriers, including USPS, UPS, FedEx, DHL, Australia Post, Canada Post, and Royal Mail, among others.

How do I get started with a ShipStation API integration?

Sign up for a free trial to explore the platform. Then, review the ShipStation API documentation, generate your API key from your account settings, and you can begin testing your integration using common developer tools.

Is the platform available worldwide?

Currently, ShipStation supports accounts in the US, Canada, UK, Australia, New Zealand, France, and Germany, with plans for expansion.


By leveraging the ShipStation API and its extensive developer resources, businesses can craft highly automated, efficient, and customized shipping solutions. Whether integrating with existing ERP systems, building bespoke workflows, or enhancing international logistics, the platform’s capabilities open new horizons for scalable growth and exceptional customer experiences.