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This endpoint is used to initiate a request that will send an invite to the customer to Login or Register with humm so that they can get a pre-approval code.

Method: Invite


Parameter Type length Description
x_merchant_id Unicode string 10 Merchant identifier as defined by humm
x_mobile Unicode string 10 Customer’s mobile number
x_purchase_amount int 12 Total purchase amount (in cents)
x_device_id Unicode string 64 Unique device identifier for the POS terminal
x_operator_id Unicode string 64 ID of POS/terminal operator
x_firmware_version Unicode string 64 Current firmware version of POS device
tracking_data optional Associative array Max 1000000 A map that can be populated with additional tracking/state information that will get passed back in the response
signature Hex string case-insensitive 200 Payload that is signed using HMAC-SHA256 using a device specific key


Parameter Type Description
x_status Unicode string Success/Failure/Error
x_code Unicode string A code that maps to a specific reason
x_message Unicode string A string explaining the status/code above.
tracking_data Associative array Echoes tracking_data sent on the request
signature Hex string case-insensitive Payload that is signed using HMAC-SHA256 using a device specific key


The following describes dummy API requests that return a predictable response. Please contact [email protected] to get access to the test/dummy APIs.

Request -> x_purchase_amount Response -> x_status Response -> x_code
##01 Success SINV01
##30 Error EVAL01
##31 Error EAUT01
any other value Error EISE01

# signifies an alphanumeric digit

Testing Assumptions To generate the signature, use a device-signing-key of "1234567890". A invalid signature will cause an ESIG01 Error.