A2A Protocol

The Multi-Agent Problem in 2026 # By mid-2026, most development teams have adopted MCP (Model Context Protocol) for connecting AI models to tools. But a critical gap remains: how do AI agents talk to each other? Consider a real-world scenario: An e-commerce platform deploys three specialized agents: Inventory Agent — monitors stock levels, predicts demand Pricing Agent — adjusts prices based on market conditions Customer Support Agent — handles inquiries, processes returns Each agent works brilliantly in isolation. But when the Pricing Agent needs to ask the Inventory Agent about stock availability before applying a discount, there’s no standard way for them to communicate. Teams end up building fragile, custom integrations that break at scale.