405 Method Not Allowed on POST /api/v2/outbound/campaigns/{id}/trigger? Is Personal Connection API even public?

NICE CXone API & Integrations
1

I’ve been digging through the CXone API docs for the last two days trying to automate outbound calls for our high-priority alert queue. The goal is simple: when a specific webhook hits our internal service, fire off a single outbound call via the Personal Connection API without spinning up a full-blown predictive campaign.

I found the POST /api/v2/outbound/campaigns/{id}/trigger endpoint mentioned in a few community threads as the way to go for ad-hoc triggers. I have a valid OAuth token, I’m using the Python SDK, and the campaign ID is definitely correct since I can see it in the UI.

Here’s the curl equivalent of what my Python script is sending:

curl -X POST "https://mypurecloud.api.mypurecloud.com/api/v2/outbound/campaigns/98765432-1234-5678-90ab-cdef12345678/trigger" \
 -H "Authorization: Bearer eyJhbGciOiJSUzI1NiIsInR5cCI6IkpXVCJ9..." \
 -H "Content-Type: application/json" \
 -d '{"contactId": "contact-xyz-123"}'

The response I keep getting back is a hard 405 Method Not Allowed.

{
 "errors": [
 {
 "code": "405",
 "message": "Method not allowed"
 }
 ],
 "requestId": "abc-123-def-456",
 "status": 405
}

I’ve tried a few things:

  • Verified the OAuth token has the outbound:campaign:write scope. It does.
  • Checked the campaign settings. It’s set to “Predictive” but I assumed the trigger endpoint overrides the schedule.
  • Tried passing an empty JSON body {} just in case the contactId parameter was invalid, but still got 405.
  • Double-checked the URL path. No typos. The {id} is replaced with the actual UUID.

Is this endpoint actually deprecated? Or is there a different API path for Personal Connection that I’m missing? The docs are pretty sparse on the exact payload structure for the trigger call. I feel like I’m bashing my head against a wall here because the documentation implies this should work for immediate triggers.

Any chance someone has a working example of the Python SDK call for this? I’m starting to think I need to use the Contact List API instead but that seems like overkill for a single call.