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We are planning to deprecate these endpoints in the future. Please consider updating your tests to use Simulations 2.0 as soon as possible. If you are new to Marqeta’s Simulations service, start testing your integration using the recently released Simulations 2.0 API for card transactions and direct deposits. If you are currently using the Simulations service described on this page, consider switching to the Simulations 2.0 service. The Simulations 2.0 service includes all the capabilities of the previous versions of Simulations, plus it offers a new set of endpoints and a Postman collection. The Marqeta platform provides you with a production environment, as well as a test environment known as the sandbox. There are two types of sandbox environments available:
  • Public sandbox: A single-user environment where you can begin building your program. Public sandbox users are typically potential customers who are evaluating Marqeta as a partner in their application.
  • Private sandbox: A multi-user environment where you can integrate your application with the Marqeta platform. Marqeta customers use the private sandbox and its connected microservices to validate their application’s integration, as well as ongoing API changes.
All funds and transactions are simulated in both types of sandbox environments. The sandbox may give you access to features not available in production environments, depending on your integration. The most significant functional difference between the production and sandbox environments is that your production environment communicates with a payment card network. This communication allows your program’s cards to pay for goods and services by initiating live transactions over the card network. The public and private sandbox environments, on the other hand, do not communicate with a card network and the cards you create within them cannot be used to conduct real-world transactions. You must, therefore, rely on simulated transactions in order to test the cards, users, and other objects you create within the sandbox. The public and private sandbox environments provide a set of endpoints that allow you to simulate various types of card network transactions, such as authorizations, reversals, and balance inquiries. These endpoints are available only within the public and private sandbox environments, and not within your production environment. This page, therefore, applies only to the public and private sandbox environments.

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