API Basics – Marqeta Support

Environments, authentication, and request formatting.

Core API

Can I request multiple user access tokens?

Are updates to the Core API backward-compatible?

How is an object's token formatted?

When do user access tokens expire?

Do POST requests require body field data if all fields are optional?

How do I inspect existing objects?

Your Sandbox

What are the prerequisites for simulating a transaction in my sandbox environment?

What environments are available for development?