If you're a regular user of the Club Texting APIs we've got a quick holiday gift for you. A few weeks ago we added the ability to pay for credit purchases and Keyword rentals via API using a credit card that you have stored in your Club Texting account. At the time we posted some PHP samples, but we now have JSON & XML samples for five other languages. Check it out:
Looking for documentation about using stored credit cards? Check the REST API documentation.