// GitHub

Chris Reddington demonstrates "Flight School," a custom Next.js application built to personalize his learning journey using the GitHub Copilot SDK. See how he leverages agentic workflows to generate daily coding challenges based on his GitHub profile, evaluate solutions against test cases, and automatically export projects to new repositories.

Join us for Rubber Duck Thursdays! A lighthearted and informal stream where we live code on some projects. This week we explore how to bring the power of GitHub Copilot into your apps with the GitHub Copilot SDK, building hands-on examples and discussing patterns for integrating AI-powered coding assistance directly into developer tools and workflows.

Chris showcases Timestamp, an open-source countdown timer app built with vanilla TypeScript featuring an extensible theme system, world map wall clock, and 2500+ unit tests with 300+ Playwright end-to-end tests. He deep-dives into structuring GitHub Copilot custom instructions vs agents vs prompt files, demonstrates manager-specialist agent patterns, and walks through GitHub Actions automation for issue forms and theme scaffolding.

Quoted as a GitHub expert on the importance of integrating security tooling into development lifecycle and the role of AI in secure coding practices.

Chris builds a New Year countdown app from scratch using Vite, TypeScript, and Tailwind CSS, leveraging GitHub Copilot's Plan agent for iterative requirements and a custom UI Performance Specialist agent. The stream covers adding time zone support with a world map, a fireworks celebration theme using fireworks.js, and a test-driven development approach.

Chris reviews the latest GitHub changelog including CodeQL updates, GPT-5.1 Codex Max preview, GitHub MCP server tool-specific configuration, and Enterprise Server 3.19 GA. He then explores the major VS Code December release featuring Agent HQ, background agents with git worktrees, sub-agents, and custom agents for organizations, while continuing to build custom agents for a game MCP server project.

In this live stream, we recap the MCP server elicitation feature and then dive into GitHub Actions fundamentals — building workflows from scratch, covering triggers, jobs, dependencies with needs, matrix builds for cross-platform testing, and workflow_dispatch for manual runs. We also walk through a packed GitHub changelog covering ARM64 runners, GPT-5 in GitHub Models, immutable releases, and GitHub MCP server secret scanning.

In this live stream, we continue building a turn-based game MCP server, implementing MCP elicitation to gather user preferences and consolidating duplicate tool calls into cleaner abstractions. We also recap the latest GitHub changelog including npm trusted publishing with OIDC, Claude Opus 4.1, and Copilot coding agent updates.

This video shows how to create a GitHub Issue directly from Copilot Chat on GitHub.com and immediately assign it to the Copilot coding agent. The core focus is Model Context Protocol (MCP): how the Notion MCP server is configured to give Copilot access to a product requirements document stored in Notion, enabling it to implement a user reviews feature for the 'Copilot Airways' travel guide with full traceability back to the source document. The video also covers how MCP servers are provisioned inside GitHub Actions and how to use Copilot's PR change summary to navigate large code reviews.

The GitHub Copilot coding agent works from anywhere—including your phone. This video demonstrates assigning a GitHub Issue to Copilot directly from the GitHub Mobile app, targeting a GitHub Pages deployment task for the 'Copilot Airways' CI workflow. It then shows how to monitor Copilot's progress, view the session log, and review and approve the resulting pull request entirely from a mobile browser, including the 'Approve and Run' gate that protects GitHub Actions execution.