Alchemy has launched AgentCard, a new AI agent payment platform that allows users to pay for inference and API usage, order food via DoorDash, Amazon, and Uber, and engage in 24/7 trading on Polymarket. The platform is available to all users, offering instant, private, and reusable payment capabilities. The launch has been endorsed by official accounts from Solana, Base, and Polymarket, highlighting its broad support within the crypto community.