The following endpoint can be used to create an extension value for a given object.

POST/:object_type/:object_id/extensions/fields/:extension_field_id

Where object_type and object_id describe the object you wish to get the extension values for. The extension_field_id can be retrieved by using GET /:object_type/extensions/fields. We currently support the following object types:

Parameters

Table of allowed parameters.

value_id	Integer	Required for "lookup" and "contributor" field types
value_date	String	Required for "date", "date_time" and "certify" field types. Note. Currently this does not support unix timestamps but YYYY-MM-DD HH:MM:SS
value_int	Integer	Required for "int" field type.
value_type	String	Required for "lookup" field type. e.g. "Company".
value	String	Required for all field types not handled by the other `value_*` fields.
_fields	partial string	Allows you to specify optional fields and linked objects to include in the response.

Handling the response

Please see the list extension value endpoint for controlling the response.