Is there an ETA on this?
Leads API currently does support Custom Fields.
If a Lead contains custom fields, the fields’ values will be included in the response in the same format as with the
Dealsendpoints. If a custom field’s value hasn’t been set for the Lead, it won’t appear in the response. Please note that Leads do not have a separate set of custom fields, instead they inherit the custom fields’ structure from Deals.
Great! I was basing my question on this last sentence in the API reference:
Leads are potential deals stored in Leads Inbox before they are archived or converted to a Deal. Each Lead needs to be named (using the
titlefield) and be linked to a Person or an Organization. In addition to that, a Lead can contain most of the fields a Deal can (such as
expected_close_date). The Leads API does not support custom fields yet.