Oobit, a wallet startup backed by Tether, has launched Visa-powered virtual "Agent Cards" designed for AI agents. These corporate expense cards allow AI bots to make online purchases directly using USDT balances, eliminating the need for fiat conversion or manual transaction approvals. The cards offer features such as per-agent spending limits, category-level expenditure controls, and per-transaction and per-merchant caps. Additionally, each transaction generates an automatic record and integrates with platforms like Stripe for subscription billing and vendor payments.