--- title: Your Agents Are in Solitary Confinement: Why MCP & A2A... description: 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... canonical: https://daily.dev/posts/your-agents-are-in-solitary-confinement-why-mcp-a2a-aren-t-enough-vlad-luzin-band-79k5ba6lv twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Your Agents Are in Solitary Confinement: Why MCP & A2A Aren't Enough — Vlad Luzin, Band | daily.dev og:description: 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... og:url: https://daily.dev/posts/your-agents-are-in-solitary-confinement-why-mcp-a2a-aren-t-enough-vlad-luzin-band-79k5ba6lv og:image: https://api.daily.dev/og/posts/79K5ba6lv.png og:image:alt: Your Agents Are in Solitary Confinement: Why MCP & A2A Aren't Enough — Vlad Luzin, Band og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # Your Agents Are in Solitary Confinement: Why MCP & A2A Aren't Enough — Vlad Luzin, Band **[AI Engineer](https://daily.dev/sources/aidotengineer)** · 17 min read · 0 upvotes · 0 comments ## Summary 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 ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: --- Tags: [#ai](https://daily.dev/tags/ai), [#ai-engineering](https://daily.dev/tags/ai-engineering) [View this post on daily.dev](https://daily.dev/posts/your-agents-are-in-solitary-confinement-why-mcp-a2a-aren-t-enough-vlad-luzin-band-79k5ba6lv) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"Your Agents Are in Solitary Confinement: Why MCP & A2A Aren't Enough — Vlad Luzin, Band","url":"https://daily.dev/posts/your-agents-are-in-solitary-confinement-why-mcp-a2a-aren-t-enough-vlad-luzin-band-79k5ba6lv","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/your-agents-are-in-solitary-confinement-why-mcp-a2a-aren-t-enough-vlad-luzin-band-79k5ba6lv"},"datePublished":"2026-09-30T13:28:57.170Z","dateModified":"2026-09-30T15:16:05.766Z","description":"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...","image":"https://i.ytimg.com/vi/UOcHfR3_tys/sddefault.jpg","thumbnailUrl":"https://i.ytimg.com/vi/UOcHfR3_tys/sddefault.jpg","isAccessibleForFree":true,"articleSection":"AI Engineer","inLanguage":"en","publisher":{"@type":"Organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180}},"author":{"@type":"Organization","name":"AI Engineer","logo":"https://media.daily.dev/image/upload/s--u5PucxNT--/f_auto/v1724338940/logos/aidotengineer","url":"https://daily.dev/sources/aidotengineer"},"commentCount":0,"discussionUrl":"https://daily.dev/posts/your-agents-are-in-solitary-confinement-why-mcp-a2a-aren-t-enough-vlad-luzin-band-79k5ba6lv","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":0},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":0}],"keywords":"ai,ai-engineering","timeRequired":"PT17M","video":{"@type":"VideoObject","name":"Your Agents Are in Solitary Confinement: Why MCP & A2A Aren't Enough — Vlad Luzin, Band","description":"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...","thumbnailUrl":"https://i.ytimg.com/vi/UOcHfR3_tys/sddefault.jpg","uploadDate":"2026-09-30T13:28:57.170Z","duration":"PT17M","url":"https://api.daily.dev/r/79K5ba6lv","embedUrl":"https://www.youtube.com/embed/UOcHfR3_tys"}} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"AI Engineer","item":"https://daily.dev/sources/aidotengineer"},{"@type":"ListItem","position":3,"name":"Your Agents Are in Solitary Confinement: Why MCP & A2A Aren't Enough — Vlad Luzin, Band"}]} ```