10 Best AI Agent Payment Protocols In 2026

This article will cover the Best AI Agent Payment Protocols for secure, automated and efficient digital payments by AI agents. We’ll dive deep into popular protocols such as ACP, AP2, x402, MPP, UCP, and ERC-8004, discussing their core features, benefits, and use cases to help you understand how these technologies are transforming automated payments. ACP is an open standard co-created by OpenAI and Stripe. It enables checkout within the chat, allowing an agent to complete a purchase while the merchant remains the seller of record.

Source: CoinWorldStory