Markets & Economy Visa, Mastercard, and Fiserv Just Joined a Group Writing the Rules for AI Agent Payments August 31, 2026 · 7:15 pm 1 sources Image: Yahoo Finance ad slot · in-content video 16:9 Coverage More coverageVisa, Mastercard, and Fiserv Just Joined a Group Writing the Rules for AI Agent PaymentsYahoo Finance · August 31, 2026 19:15