MCP Is the Brain. But Where Is the Wallet?

2025 was the year AI agents learned to think. 2026 is the year they need to pay. The Model Context Protocol changed everything about how AI agents interact with the world. Suddenly, an agent could connect to databases, call APIs, read files, and chain multi-step tasks across services. The developer ecosystem moved fast. Hundreds of MCP servers appeared within months. But there was one capability missing from every MCP server list, every agent framework, every agentic demo: the ability to actually spend money. Not simulate a payment. Not mock a transaction. Actually transfer value from one account to another, autonomously, without a human clicking approve. That gap is not a minor feature gap. It is the difference between an AI agent that can browse and one that can act. The Coordination Problem in Agentic Payments Here is what most agent builders discover around demo number three or four. You have built a purchasing agent. It browses suppliers, compares prices, evaluates lead times, and