
Shipping API
VESYL's flexible, open-source APIs empower businesses of all sizes to create a customized shipping solution tailored to their unique needs. Adapt seamlessly to your fulfillment workflows without being constrained by rigid, predefined features.
Get started with the best shipping API for optimizing logistics and enhancing customer satisfaction.


Customize your entire fulfillment process
VESYL’s open API lets you create bespoke shipping solutions tailored to your business needs. With flexible integrations, you can design workflows that scale as your order volume grows—no predefined limits, just endless adaptability.
By integrating with your fulfillment centers, the API streamlines the shipping process, reduces confusion, and enhances overall customer satisfaction through better communication and visibility.
Integrate your current systems with ease
Our API makes it easy to connect VESYL with your existing systems and tools to streamline your operations. Use our API to foster innovation, enhance functionality, and optimize shipping processes without disrupting your current setup.


Developer-friendly documentation
VESYL’s open API is presented in detailed, developer-friendly documentation for an easy and simple implementation experience. Whether integrating with existing systems or building new workflows, our resources make implementation simple and efficient.
The API documentation specifies the use of 'string' identifiers and attributes in API calls, ensuring clarity on the expected data type for inputs and responses.

Customize your eCommerce workflow with VESYL's API




Frequently asked questions

How to find your API key?
Sometimes you may need to find an API Key to use VESYL with a 3rd party platform and to share data back and forth.
To find your API key, navigate to settings by clicking on your name at the bottom left and click on "Settings".
From there click on "Developer Settings" and click "View". From here you can use the copy button to copy your API Key.
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Where can I find the Open API Documentation?
VESYL's API developer documentation can be found in Settings under the tab Developer Settings.
How to create automation rules?
Automation Rules are created on simple If/Then Statements. Set your criteria (If) at the top and your action (Then) at the bottom. You can set as many criteria and actions as you would like.
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What carriers and services do we support?
VESYL provides a USPS account with every signup. If you have other carrier accounts you would like to bring in please let us know by reaching out through our chat in the bottom right.
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What is a shipping API?
Shipping APIs are a crucial component of e-commerce businesses, enabling them to integrate shipping capabilities into their existing tech stack. A shipping API is a code that allows different software to securely exchange shipping information with other applications, streamlining shipping operations and enhancing efficiency.
By using shipping APIs, businesses can automate shipping processes, such as printing shipping labels and tracking packages, and provide real-time updates to customers. Shipping APIs can be integrated with various e-commerce platforms and software, including multi-carrier shipping software, to provide a seamless shipping experience.
How do shipping APIs work?
Shipping APIs work by connecting the data and processes across separate digital freight solutions, enabling seamless information exchange between systems. They send a request for information from an external server and present the response in an understandable format to the requesting system.
Shipping APIs can be used to compare shipping rates, print labels, and track packages from multiple carriers, including FedEx, UPS, and USPS. They provide real-time updates and accurate data for shipping operations, improving the efficiency and accuracy of shipping processes.
By integrating with shipping APIs, businesses can gain access to a wide range of shipping services, including domestic and international shipments, and value-added services such as customs clearance and insurance.
What are the benefits of integrating with a shipping API?
The benefits of using shipping APIs are numerous. They can help businesses reduce manual processes and human error in shipping operations, saving time and cutting costs.
Shipping APIs can also improve customer satisfaction by providing real-time updates and tracking information, enabling customers to stay informed about the status of their shipments. Additionally, shipping APIs can help businesses increase shipping efficiency, reduce costs, and improve the overall shipping experience.
By automating shipping processes, businesses can focus on other aspects of their operations, such as marketing and sales, and improve their competitiveness in the market. Shipping APIs can also provide businesses with valuable insights and data on their shipping operations, enabling them to make informed decisions and optimize their shipping strategies.
What are the key features of shipping APIs?
Some key features of shipping APIs include address validation, multi-carrier support, and shipment tracking.
Address validation ensures that customer addresses are accurate and up-to-date, reducing errors and improving delivery times.
Multi-carrier support enables businesses to compare rates and print labels from multiple carriers, providing flexibility and cost savings.
Shipment tracking provides real-time updates on package status, enabling businesses to monitor their shipments and respond to any issues that may arise.
Other key features of shipping APIs include support for multiple file formats, API solutions for custom integrations, and access to shipping rates and costs from multiple carriers.
By leveraging these features, businesses can streamline their shipping operations, improve efficiency, and enhance the customer experience.

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Corso makes the return process simple by integrating with VESY
"We integrated into VESYL’s API in under 20 minutes. Need I say more? The shipping expertise from the VESYL side is second to none."
VP of Engineering