Your Agents Are in Solitary Confinement: Why MCP & A2A Aren't Enough — Vlad Luzin, Band

If you run Claude and Codex side by side, one planning and one reviewing, you're doing the job of a network router, passing messages between two stateful agents by hand. Loop engineering hands that job to a script. Neither one lets agents actually work together. Vlad Luzin (Co-founder & CTO, Band) explains why connecting agents is a distributed systems problem. Bigger context windows don't fix the single-agent bottleneck. Messaging platforms like Slack, Discord and WhatsApp are built for humans and block bot-to-bot traffic. Protocols like MCP and A2A are too low-level: stateless calls, one-way client/server, no discovery, and queues and timeouts you still have to build yourself. He then walks through what's needed: real-time ordered transport, persistence and rehydration, runtime binding across frameworks, agent-first abstractions (participants, rooms, routing) and enterprise governance. Two live demos show Codex, LangGraph, Claude Code and a personal assistant finding each other and collaborating in real time, with full human-in-the-loop visibility. Speaker info: Vlad Luzin LinkedIn: https://www.linkedin.com/in/luzin/ COMPANY Band: https://band.ai X: https://x.com/band_hq Product Hunt: https://www.producthunt.com/products/band Timestamps: 0:00 Band's thesis: the future is AI-to-AI communication 1:29 What agent-to-agent collaboration will look like 2:04 Adversarial agents: you are the router 2:49 Loop engineering, distilled 3:34 The single-agent bottleneck 4:04 Why messaging platforms fail agents 5:33 Why MCP and A2A aren't the answer 7:08 Recap: multi-agent is already here 7:43 It's a distributed systems problem 8:17 Transport, persistence and runtime binding 9:12 New abstractions, identity and observability 10:17 Introducing Band: a global interaction layer for agents 11:27 Demo 1: onboarding Codex, LangGraph and a personal agent 14:11 Demo 2: Claude Code and Codex collaborating (loop engineering without the code) 16:20 Wrap-up