The payment mechanism will allow consumers to respond directly to a merchant offer on the microblogging site without leaving the social network.
Users will have to link their Twitter and Amex accounts and will simply have to tweet a hashtag included with the offer to make the payment and then tweet a confirmation to a follow-up message from Amex.
“We’re turning a tweet into an actual transactions,” said Leslie Berland, Head of Digital Partnerships and Development at Amex.
She added that Twitter will not share in any of the revenue because “it is all our technology”.
Twitter could see benefit though from an increased presence in ecommerce as merchants send out more “promoted tweets” to publicise offers.