The page at https://developer.twitter.com/en/docs/ads/general/overview, under Developer license, reads:
The Developer license provides companies access to all Ads API endpoints to develop their tool to completion. Developer-level partners are limited to five OAuth tokens and are prohibited from exposing any Ads API functionality to external advertisers.
So, as I understand, you can, for up to 5 OAuth tokens, provided you use this in-house.
