Opening Up Your App to AI Agents: A Practical Guide to MCP with .NET, GPT-to-Plugin Deadline, More
October 22, 2026
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Ahead of his Visual Studio Live! session, Marcel de Vries explains how .NET teams can expose useful application capabilities to AI agents, starting with focused, read-only tools and user-specific permissions.
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OpenAI is retiring Custom GPTs and replacing them with plugins built around reusable skills, reference files and connected tools. The shift also reaches developers through Codex, which now runs as an agent harness in VS Code, while some builders are pushing back over migration differences, sharing limits and whether plugins really match the Custom GPT experience.
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Microsoft's September roundup highlights model choice, Copilot-assisted package fixes, pull request exploration and new debugging features.
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Six Days on the Modern .NET Stack, from C# to Copilot at VSLive!, part of Live! 360 Orlando 2026
Build what's next at Visual Studio Live!, November 15-20, 2026, at the Royal Pacific Resort at Universal Orlando. Spend six days going deep across the modern Microsoft developer stack, taught by Microsoft engineers, GitHub architects, MVPs, and the Visual Studio PM team. Dig into .NET 8/9, ASP.NET Core, Blazor, MAUI, C# 12, GitHub Copilot and AI integration, plus Azure deployment, REST/gRPC/GraphQL APIs, modern DevOps with GitHub Actions, and data skills across SQL Server 2025 and EF Core. Your pass unlocks all six co-located Live! 360 conferences—200+ sessions, 16 hands-on labs and workshops, and keynotes you can mix into your own custom agenda. Whether you want to ship smarter code or architect your team's future, this is technical training you can use the day you get back—no sales pitch, just working knowledge.
Register by October 23 and Save $300! Claim your seat in sunny Orlando today!
Build what's next at Visual Studio Live!, November 15-20, 2026, at the Royal Pacific Resort at Universal Orlando. Spend six days going deep across the modern Microsoft developer stack, taught by Microsoft engineers, GitHub architects, MVPs, and the Visual Studio PM team. Dig into .NET 8/9, ASP.NET Core, Blazor, MAUI, C# 12, GitHub Copilot and AI integration, plus Azure deployment, REST/gRPC/GraphQL APIs, modern DevOps with GitHub Actions, and data skills across SQL Server 2025 and EF Core. Your pass unlocks all six co-located Live! 360 conferences—200+ sessions, 16 hands-on labs and workshops, and keynotes you can mix into your own custom agenda. Whether you want to ship smarter code or architect your team's future, this is technical training you can use the day you get back—no sales pitch, just working knowledge.
Register by October 23 and Save $300! Claim your seat in sunny Orlando today!
Microsoft's editors remain prominent in the 2026 developer survey, while GitHub Copilot trails Claude Code and ASP.NET Core ranks fourth among web technologies.
Seven social media posts preview changes spanning Markdown image handling, merge conflicts, keyboard shortcuts, testing and AI chat.
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