Exodus has launched a stablecoin called XO Cash on the Solana platform, which is focused on payments for AI agents. The launch has also led to the introduction of a card, possibly called the MoonAgents Card, that enables AI agents to spend stablecoins at locations that accept Mastercard. It is unclear how other companies, such as Circle, are involved in this development, but they appear to be making their own moves in the area of AI agent payment tools.