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This page shows you how to update product prices through DEX or send a DEX file to a machine using the Lynx API. In the step-by-step guide below, you’ll use the following endpoint:
AuthenticationRefer to the Security & Token page of this documentation to learn how to access your tokens and how to properly use them to authenticate your API requests.

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Updating the Prices

Use the Update Specific Machine Attribute endpoint to send a DEX file to a machine to update the prices and other product information.
Request
curl -X PUT "https://lynx.nayax.com/operational/api/v1/machines/<MACHINE_ID>/attributes/<DEVICE_ATTRIBUTE_ID>" \
-H "Authorization: Bearer <YOUR_ACCESS_TOKEN>" \
-H "Content-Type: application/json" \
-d '{
  "DeviceAttributeID": "900",
  "MachineID": "<MACHINE_ID>",
  "DeviceAttributeValue": "<NEW_VALUE>"
}'
Replace <MACHINE_ID> with the actual identifier of the machine, <DEVICE_ATTRIBUTE_ID> with the attribute you want to update (in this example, “900” for DEX updates), and <NEW_VALUE> with the updated value. Use a valid access token for <YOUR_ACCESS_TOKEN>.
  • DeviceAttributeID: In this example, the attribute ID “900” might correspond to a DEX-related update, such as sending new price data.
  • MachineID: Specifies the machine that is receiving the DEX data update.
  • DeviceAttributeValue: The new value for the specified attribute, such as the updated price or DEX content.
The response from this API call confirms the updated attribute details.
Response
{
  "DeviceAttributeID": 900,
  "MachineID": 5001,
  "DeviceAttributeValue": "2.99",
  "DeviceAttributeCodeID": 1234,
  "DeviceAttributeName": "PriceUpdateDEX",
  "DeviceAttributeGroup": "Pricing",
  "DeviceAttributeReadOnlyBit": false,
  "MachineAttributeRef": "MACH001",
  "MachineRef": "MACH001"
}
Where:
  • DeviceAttributeID: The ID of the updated attribute.
  • MachineID: The identifier of the machine where the attribute update occurred.
  • DeviceAttributeValue: The new value that was set for the attribute.
  • DeviceAttributeCodeID: A code associated with the updated attribute.
  • DeviceAttributeName: The name of the updated attribute.
  • DeviceAttributeGroup: The group/category to which the attribute belongs, such as “Pricing.”
  • DeviceAttributeReadOnlyBit: Indicates whether the attribute is read-only (false in this case).
  • MachineAttributeRef: A reference identifier for the machine attribute.
  • MachineRef: The reference identifier for the machine.