Show HN: CartAI – Checkout API for AI agents and apps (www.cartai.ai)

CartAI has launched a groundbreaking Checkout API that empowers AI agents to effortlessly navigate through various web properties and complete transactions, including checkouts, subscription sign-ups, and invoice payments. This API automates the often-complex transaction process by streamlining interactions between browser automation and agentic payment systems, ensuring reliability in clearing transactions—a significant achievement given that many existing solutions focus solely on initiating actions rather than finalizing them. For the AI/ML community, CartAI represents a new paradigm in transaction management by providing composable workflows that cater to diverse transactional needs. The API includes features like conditional branching, PCI-compliant payment handling, and integration with existing web security infrastructures, allowing for seamless payment processing and enhanced security. Developers can either fully integrate the API into their applications or use a drop-in cart solution to quickly implement checkout capabilities, thus expanding the potential for automated commerce applications in various sectors.