I've signed up for HubSpot, and use Segment to send it stuff. Something is sending a lot of calls to create contacts to the HubSpot API (I have 600-odd contacts that look familiar but I don't know where they're from).
The only other place this stuff could be is in PipeDrive (our previous CRM), but I've checked there and there are no links to the HS API.
I've only given my HS API key to Segment.
I'm overlooking something obvious here, but I can't for the life of me see what. Any idea? Is there some way to see any API calls and sources of any calls?