GET /api/partner/campaigns. There is no separate /offers path.
Offers
offerType accepts EOffer values (for example Url and Spreadsheet).
Generic coupons
url and code (public prefix). PersonalCoupon codes are not returned.
Useful filters
Pagination:
page (default 1), limit (default 10, max 20).
Detail: GET /api/partner/campaigns/{campaignId}.