v1
latestOpenAPI 3.0.32026-07-26120117318.1 KBCustomers
Set customer properties
Sets one or more custom properties on a customer. Accepts up to 100 key/value pairs per request. Keys must be 1–256 characters; values must be at most 1024 characters.
post/customers/{customer_id}/properties
Path parameters
customer_idstring required
Customer identifier.
Request body
Example request
{
"properties": [
{
"key": "plan_tier",
"value": "premium"
}
]
}Response
Properties set successfully. Returns updated customer data.
object required
Property-save result wrapped in the v4 envelope (object, url, data). data.saved_properties lists the (key, value) pairs that were accepted; data.property_errors lists any rejected pairs with the reason — both are always present, empty arrays on success.