ASP.NET Core authentication middleware configuration including OpenID Connect, JWT Bearer, cookie authentication, authentication schemes, challenge/forbid flows, and external identity provider integration.
Install
npx skills add DuendeSoftware/duende-skills --skill aspnetcore-authenticationnpx skills add DuendeSoftware/duende-skills --skill aspnetcore-authentication -a claude-code -gnpx skills add DuendeSoftware/duende-skills --skill aspnetcore-authentication -a codex -ggemini skills install https://github.com/DuendeSoftware/duende-skills.git --path skills/aspnetcore-authenticationgh skill install DuendeSoftware/duende-skills aspnetcore-authenticationgit clone --depth 1 https://github.com/DuendeSoftware/duende-skills /tmp/DuendeSoftware__duende-skills
mkdir -p ~/.claude/skills ~/.agents/skills
cp -R /tmp/DuendeSoftware__duende-skills/skills/aspnetcore-authentication ~/.claude/skills/aspnetcore-authentication # Claude Code
cp -R /tmp/DuendeSoftware__duende-skills/skills/aspnetcore-authentication ~/.agents/skills/aspnetcore-authentication # Codex, Cursor, Gemini CLI, Copilot, OpenCode