It’s not via any API, but through the UI. If you go to Value Builders page, select the one you want the configuration for, and choose export on the menu.
This will give you the json for the object, but still doesn’t provide the latest used value, just what the initial configuration was:
[
{
"id": "30b7e8a5-7b92-401c-a938-b77d8551f80d",
"case": "",
"name": "SZ Person ID Builder",
"uid": "sz_profile_uid_builder_value_builder",
"class_name": "ValueBuilder"
},
{
"id": "4824221f-66d4-45bc-8a54-f1950c735adc",
"attributable_id": "9891353e-1570-4117-af33-c149645543a5",
"attributable_type": "ValueBuilderHelper",
"options": {
"param": "000100"
},
"position": 2,
"uid": "2a9486492c814533aceedee1f14fec21",
"value_builder_id": "30b7e8a5-7b92-401c-a938-b77d8551f80d",
"class_name": "ValueBuilderAttribute"
},
{
"id": "9891353e-1570-4117-af33-c149645543a5",
"name": "Incremented Number",
"options": {},
"uid": "incremental_integer",
"class_name": "ValueBuilderHelper"
},
{
"id": "4dad09ba-1b0e-423e-ab8a-ddc79e49f336",
"attributable_id": "7126b7f0-fc2e-4c45-89a6-88a46a646c47",
"attributable_type": "ValueBuilderHelper",
"options": {
"param": "P"
},
"position": 1,
"uid": "ed6d0109a7564a4ca55efd023de8d7df",
"value_builder_id": "30b7e8a5-7b92-401c-a938-b77d8551f80d",
"class_name": "ValueBuilderAttribute"
},
{
"id": "7126b7f0-fc2e-4c45-89a6-88a46a646c47",
"name": "Static Value",
"options": {},
"uid": "static_value",
"class_name": "ValueBuilderHelper"
}
]
This could be used to load into another tenant via the System->Configuration Import option.
That said, manipulating these configuration items can cause problems as there isn’t any checking/validating on the import so it’s usually only used when transferring configuration from dev to prod, or prod back to dev without making any adjustments.