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Authentication with the Box API uses an Access Token to identify a user. The way in which an Access Token is acquired depends on the method used to authorize a user. The type of authorization available to an application depends on the use-case as well as the type of application that has been created in the developer console.
Authentication methods

Learn how to select an authorization type

Set up JWT authentication

Learn about Box access tokens

To try authentication without affecting production data, use a developer sandbox.

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Access Tokens for Authentication

Every API endpoint requires a valid and active Access Token to make API calls. An Access Token is a unique string that identifies an authenticated Box user to the API endpoints.

Learn more about Access Tokens

Last modified on August 28, 2026