Amplitude · Schema

UserPropertyOperations

An object containing user property operations. Each key is an operation type and the value is an object of property names to values.

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Name	Type	Description
$set	object	Set the value of a user property. If the property already exists, the value is overwritten.
$setOnce	object	Set the value of a user property only if it has not already been set. Useful for properties like initial_referrer.
$add	object	Increment a numeric user property by the specified value.
$append	object	Append a value or values to a list user property.
$prepend	object	Prepend a value or values to a list user property.
$unset	object	Remove a user property by setting its value to the string $unset.
$remove	object	Remove a value from a list user property.