This action confirms the offer, as well as sending it out to the applicant. Normally you would first set the offer's type to some value, for example “Enrolled” and then confirm the offer.
POST /api/applications/123/offers/1/confirm Host: apply.example.edu Authorization: DREAM apikey="..."
Content-Type: application/json Content-Length: 0
| ||Offer was successfully confirmed|
| ||Offer type was not yet set (Unreplied)|