Migrates OWIN/Katana middleware, authentication, pipeline components, and SignalR 2.x to native ASP.NET Core equivalents. Use when projects reference Microsoft.Owin, IAppBuilder, OwinMiddleware, Microsoft.Owin.Host.SystemWeb, OWIN-based OAuth/cookie/bearer authentication, OWIN startup classes, or SignalR 2.x hubs mapped via OWIN.
Install
npx skills add microsoft/upgrade-agent-plugins --skill migrating-owin-to-aspnet-corenpx skills add microsoft/upgrade-agent-plugins --skill migrating-owin-to-aspnet-core -a claude-code -gnpx skills add microsoft/upgrade-agent-plugins --skill migrating-owin-to-aspnet-core -a codex -ggemini skills install https://github.com/microsoft/upgrade-agent-plugins.git --path plugins/upgrade-agent/upgrade/dotnet/skills/lazy/web/mvc/migrating-owin-to-aspnet-coregh skill install microsoft/upgrade-agent-plugins migrating-owin-to-aspnet-coregit clone --depth 1 https://github.com/microsoft/upgrade-agent-plugins /tmp/microsoft__upgrade-agent-plugins
mkdir -p ~/.claude/skills ~/.agents/skills
cp -R /tmp/microsoft__upgrade-agent-plugins/plugins/upgrade-agent/upgrade/dotnet/skills/lazy/web/mvc/migrating-owin-to-aspnet-core ~/.claude/skills/migrating-owin-to-aspnet-core # Claude Code
cp -R /tmp/microsoft__upgrade-agent-plugins/plugins/upgrade-agent/upgrade/dotnet/skills/lazy/web/mvc/migrating-owin-to-aspnet-core ~/.agents/skills/migrating-owin-to-aspnet-core # Codex, Cursor, Gemini CLI, Copilot, OpenCode