You can use Twitter Cards with ActiveCampaign. Go to ads.twitter.com to get started.
First, make sure you have a billing profile set up (otherwise you won't see the Cards option):
After setting up a billing profile you should see the "Creatives" option along the top. Go into the "Cards" section:
Click on the "Create Lead Generation card" button:
Under "Card content," fill out the information according to your business:
Under the "Data settings," include this information:
formparameter lets you (optionally) include a form ID, which will use the opt-in settings (if applied).
list_idparameter is also optional (specify what list you want leads added to).
To get your form ID, go to any form and examine the URL:
Same with obtaining your list ID:
Any contacts added via Twitter Cards will appear as added from the API, and fall into any automations you have set up (just like a contact added any other way):