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# Retrieve Merchant Token Public Key

Get the merchant token public key.

## Discussion

Your server calls this API to get the public key of a particular merchant token. This public key is created by the merchant token owner’s device. The key is a `P-384` public key. The response includes the `supportedCiphersuite`, which specifies the cipher suite to use when calling the `Merchant-Token-Usage-Data-Availability-Notification` or responding to [`Get MerchantToken Usage Information Package`](/documentation/MerchantTokenNotificationServices/Get-MerchantToken-Usage-Information-Package).

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