bolz.dev is a backend infrastructure layer for developers building multi-agent AI systems. Rather than another agent storefront, it provides a unified protocol stack — combining Agent-to-Agent (A2A) communication, the Model Context Protocol (MCP), OAuth-based authentication, and WebSockets — so AI agents from different platforms can securely discover each other, verify identity, and coordinate on shared workflows. It's aimed at engineers who need a reliable runtime for agent interoperability without building custom integration plumbing from scratch. If you're wiring together agents from OpenAI, Anthropic, open-source frameworks, or your own stack, bolz.dev acts as the connective tissue that handles auth, messaging, and orchestration at the protocol level.