# Support
source: https://developer.mastercard.com/eligibility-api/documentation/support/index.md

## FAQ {#faq}

An API to check the benefits a cardholder may have and details associated with that card or BIN. A vendor can check if the cardholder is eligible for benefits. Issuers, Service Providers and Merchants are all potential consumers of this API. To test the Eligibility API in the Sandbox environment, you create a project, generate sandbox keys, and use the test data. Refer to the Getting Started guide for details. This data can be used to retrieve products, product details, benefits, benefit details, issuer details, policy and coverage information that is assigned to a cardholder's full account number or to the card account's BIN/Product combination. The full card number or BIN number. The date for which benefits are to be determined. Defaults to the current date if not provided. Date format is mm/dd/yyyy. The typical data format used in the Benefits Eligibility APIs is JSON Benefits Eligibility is a global product and is available for all markets. In order to start a project using the Benefits Eligibility API, contact Mastercard Representative/Account Manager or send an email to [eligibilitysupport@mastercard.com](mailto:eligibilitysupport@mastercard.com) For pricing information on Benefits Eligibility API, contact Mastercard Representative/Account Manager or send an email to [eligibilitysupport@mastercard.com](mailto:eligibilitysupport@mastercard.com) A access token is digital, not a physical item. It is a message sent from an api to a vendor and stored temporarily by the vendor. The vendor includes a copy of the token in subsequent requests sent to the server to confirm the vendor's authentication status. A card identifier is a UUID (Universally Unique Identifier) associated to the card number.

## Get Help {#get-help}

### Contact us for technical support. {#contact-us-for-technical-support}