Bulk API in Journey Builder

Question

Is it possible to Bulk inject contacts in a journey using API ?

I tried to use the contactEvents method but i have a 500 server error. contactEventsTest is a DE created using the template "Event DE" from the wizard.

Here is my payload :

{   
"eventDefinitionKey": "APIEvent-xxxxxx-xxxxx-xxxxx-xxxx",
"data": [{
    "name": "contactEventsTest",
    "id": "e856d8a7-e7a1-e711-80e3-1402ec819dd8",
    "items": [{
        "values": [
            {
            "name": "ContactKey",
            "value": "ContactKey1TEST"
        },
        {
            "name": "Gain",
            "value": "123"
        }]
    },
    {
        "values": [
            {
            "name": "ContactKey",
            "value": "ContactKey2TEST"
        },
        {
            "name": "Gain",
            "value": "321"
        }]
    }]
}]}

Answer 1

this is not officially available for use BUT...

Try the endpoint https://www.exacttargetapis.com/interaction-experimental/v1/batchcontactevents and then something like the following system

    {
  "EventDefinitionKey": "APIEvent-052645c7-f26d-4f86-2222-52719af046f1",
  "ContactPersonType": "Contact",
  "CallerSystemName": "Salesforce",
  "RecordCount": 1,
  "BatchDetails": [
  {
    "Data": {
      "Type": "Article",
      "TouchPoint": "AccountName"
    },
    "contactKey": "0035E0000075fgDQAQ"
  }
]
} 

It is the same thing which is used by the MC Managed Package. It works up to 500 records per batch but the Managed Package does batches of 200.