Migrates the obsolete ASP.NET SignalR (Microsoft.AspNet.SignalR) to ASP.NET Core SignalR (Microsoft.AspNetCore.SignalR) for real-time communication. Use ONLY when Microsoft.AspNet.SignalR has been flagged as obsolete or deprecated and must be replaced — not for version-bump scenarios where Microsoft.AspNet.SignalR is still supported.
Install
npx skills add microsoft/upgrade-agent-plugins --skill migrating-aspnet-signalrnpx skills add microsoft/upgrade-agent-plugins --skill migrating-aspnet-signalr -a claude-code -gnpx skills add microsoft/upgrade-agent-plugins --skill migrating-aspnet-signalr -a codex -ggemini skills install https://github.com/microsoft/upgrade-agent-plugins.git --path plugins/upgrade-agent/upgrade/dotnet/skills/lazy/libraries/migrating-aspnet-signalrgh skill install microsoft/upgrade-agent-plugins migrating-aspnet-signalrgit 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/libraries/migrating-aspnet-signalr ~/.claude/skills/migrating-aspnet-signalr # Claude Code
cp -R /tmp/microsoft__upgrade-agent-plugins/plugins/upgrade-agent/upgrade/dotnet/skills/lazy/libraries/migrating-aspnet-signalr ~/.agents/skills/migrating-aspnet-signalr # Codex, Cursor, Gemini CLI, Copilot, OpenCode