Updated 22 May 2024 |

As the eCommerce industry expands at a fast pace, APIs have become a significant factor in providing integration and improving the performance of applications. APIs are important for any software developer as they enhance the capacity to develop efficient and reliable software. There is one more powerful tool in the eCommerce environment, which is the OTTO API. This comprehensive guide is designed to provide you with the fundamental knowledge and real-world experience to help you harness the power of the OTTO API.

What is OTTO API?

The OTTO Market API is a robust tool that aims to enable developers to integrate with OTTO, an eCommerce platform in Europe. This API offers a rich and reliable toolset to integrate with OTTO’s platform and perform operations on it through code.

Imagine your order and inventory management system effortlessly syncing with OTTO Market's product listings or your customer loyalty program seamlessly integrating with OTTO Market's vast customer base. This is the strength of the OTTO Market API – it allows you to create software applications that leverage the capabilities of the OTTO Market and reach more people, which in turn makes your and your customers’ experience much stronger.

As for the technical aspect, the OTTO Market API has a solid list of features aimed at making the integration process for developers as smooth as possible. One of the most important advantages is that it works in accordance with RESTful architecture. This approach that is typical for working with databases uses HTTP methods (GET, POST, PUT, DELETE) for data reading, creation, modification, and deletion, respectively, which should be easy for developers who have experience in web development. Besides, the API is quite flexible with a nicely defined structure of the endpoints. These endpoints serve as the entry points to certain operations within the OTTO Market digital business ecosystem. Having a list of endpoints and their specific uses documented, developers can focus on creating the integration they require.

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Why Use OTTO Market API?

Here are a few key reasons software providers and developers should integrate with the OTTO Market API. First, it opens up a vast market for the company. OTTO Market is home to a large and active user base, which allows you to target more people and extend the usage of your software. As an application, connecting to OTTO Market means reaching millions of users interested in the latest solutions in the sphere of eCommerce.

Furthermore, the OTTO Market API provides access to a wide range of information and analytical tools, which are extremely helpful when it comes to decision-making and business development. From this perspective, it implies that software providers can allow their clients to see through their applications all the aspects of sales performance, customer behavior, and trends in the market.

Getting Started with OTTO API

As an OTTO Market service provider (developer), you can connect your software to this platform. Here are the necessary steps you have to take:

1. Explore and Register:

- Head over to and understand how the integration process will be conducted.

- Use the registration form available to register as a developer.

2. Partner Up:

- Once registered, you will receive credentials allowing you to access the “OTTO Partner Connect (OPC),” which is a dedicated developer platform.

- Provide all the necessary documents and data to make your partnership credible.

3. Dive into the Details:

- Make sure to explore the huge list of resources available in the Developer Program.

- The " Use-Cases " section will help you find out how other developers use the OTTO Market API.

4. Test and Refine:

- The OTTO Market also has a mock-up environment called a sandbox section where you can freely run your code without actually activating it in the live stream.

- This enables you to fine-tune integration and ensure that all works as it should.

5. Go Live and Connect:

- Once you are comfortable with the integration, apply for it with production access in the “OTTO Partner Connect (OPC).”

- Approval allows you to build your first official OTTO Market App and link your first seller, marking your official entry into the OTTO Market world.

How Сan You Integrate with OTTO via a Third-Party Solution?

Working through a third-party tool like API2Cart can make the integration with OTTO much easier and add more functionality to your integration. API2Cart is an API that integrates your eCommerce software to OTTO and other popular eCommerce platforms with ease. This unifies the approach that allows you to integrate with API2Cart once and get access to a wide range of functionalities across the multiple platforms including OTTO. API2Cart takes care of authentication, data processing and error handling which saves time and efforts in building application integrations.


API2Cart helps developers facilitate real-time connections with OTTO and keep up-to-date information in their applications and stores. Moreover, API2Cart includes detailed documentation and support, ensuring that developers can work effectively with the integrations.

API2Cart provides an opportunity to test its integration possibilities absolutely for free for 30 days without preliminary payment. In this trial period, users can explore API2Cart and its features and integrate with 40+ eCommerce platforms such as OTTO, Shopify, Magento, etc.


In conclusion, integrating with OTTO using the OTTO API or another connector, such as API2Cart, can significantly improve your eCommerce software functionality, allowing for smooth data sharing and effective process management. For a software developer, embracing these integration capabilities enables one to deliver clients better, elastic, and adaptive solutions. The OTTO API provides a wide range of tools for managing products, orders, and stocks, while API2Cart makes the integration process easier by offering a single API for connecting to various shopping platforms, such as OTTO.

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