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Watch this 24-minute conference talk from All Things Open AI 2025 where Nick Taylor from Pomerium demonstrates how to create a GitHub Copilot Extension from scratch. Follow along as he builds an extension using the Copilot Extensions SDK and Hono.js, while covering essential best practices including payload validation, progress notifications, and error handling. Learn how to set up a development environment for debugging, including techniques for port forwarding to expose your extension during development and using the Node.js debugger effectively. By the end of this hands-on presentation, you'll see a working Copilot extension that audience members can try live. Access the presentation slides at the provided SlideShare link for reference as you explore GitHub Copilot extension development.
Syllabus
Let's Create a GitHub Copilot Extension! - Nick Taylor, Pomerium
Taught by
All Things Open