Multiplayer Coding Agents in the Cloud - Charlie Holtz, Conductor

"Code is almost like the sawdust of the conversation." Charlie Holtz, co-founder and CEO of Conductor (YC S24), returns to Agents Hour to show how far coding agents have come in just a few months. Conductor started as a Mac app for running a handful of Claude Code agents in parallel. Now it's fully cloud-native and multiplayer! According to Charlie, once Fable-class models could run for hours or days, keeping agents chained to your laptop stopped making sense. Charlie gives a live demo of what he thinks everyone in cloud is overlooking: multiplayer. See every teammate's agents running in real time, jump into a workspace and steer an agent together, hand off a whole session with one keystroke, and watch agents spin up their own workspaces through Conductor's API. Along the way, Shane and Abhi dig into the ideas underneath it: code as a disposable byproduct of the prompt, the Figma-style collaboration unlock, why today's models aren't trained for multi-person conversations, and why Conductor built a native iOS app instead of just living in Slack. Recorded live on AI Agents Hour, a weekly livestream by Mastra CPO Shane Thomas and CTO Abhi Aiyer. Mondays at 12 PM Pacific. 📚 ABOUT CONDUCTOR Conductor: https://conductor.build Conductor on X: https://x.com/conductor_build Charlie Holtz on X: https://x.com/charlieholtz 📚 MASTRA RESOURCES Mastra: https://mastra.ai Mastra on X: https://x.com/mastra_ai Mastra Discord: https://mastra.ai/community/discord Mastra GitHub: https://github.com/mastra-ai Learn Mastra: https://mastra.ai/learn Principles of Building AI Agents (Book): https://mastra.ai/books/principles-of-building-ai-agents Patterns for Building AI Agents (New Book): https://mastra.ai/books/patterns-of-building-ai-agents WHAT IS MASTRA? Mastra is an open-source TypeScript framework designed for building and shipping AI-powered applications and agents with minimal friction. It supports the full lifecycle of agent development—from prototype to production. You can integrate it with frontend and backend stacks (e.g., React, Next.js, Node) or run agents as standalone services. If you're a JavaScript or TypeScript developer looking to build an agentic or AI-powered product without starting from first principles, Mastra provides the scaffolding, tools, and integrations to accelerate that process. ⏱️ CHAPTERS 00:00 Building great things takes humans and agents 00:08 Welcome back, Charlie 00:34 Goodbye local, hello cloud 02:23 Caveman mode & looking at the code 03:51 Going cloud-native: the Fable moment 05:35 The end of the cracked-open laptop 06:22 Demo: multiplayer in the cloud 08:28 Agents that create their own workspaces 10:37 "Code is the sawdust of the conversation" 10:51 The Figma analogy & one-click handoff 12:56 The multiplayer training gap for models 14:39 Why a native iOS app (not just Slack)? 15:49 The bar test / beach test 17:07 They're hiring 17:19 Outro