Uploaded April 2026 | Updated September 2026, 3 weeks ago

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Dive into the heart of VS Code’s agent loop as James and Pierce unravel how agents, sub-agents, tools, and harnesses work together to power your coding experience. Learn how the agent loop has evolved, why different models are used for specific tasks, and how you can customize or optimize your own workflows. Perfect for anyone curious about the magic behind AI-driven code assistance!

00:00 Introduction and Agent Loop Overview
06:17 Tools, Modes, and Agent Optimization
16:31 Subagents and Harnesses Explained
21:44 Why Use Different Models for Subagents?
27:13 Customization, Trade-offs, and Closing Thoughts

#vscode #githubcopilot