Implement authentication and authorization with Better Auth - a framework-agnostic TypeScript authentication framework. Features include email/password authentication with verification, OAuth providers (Google, GitHub, Discord, etc.), two-factor authentication (TOTP, SMS), passkeys/WebAuthn support, session management, role-based access control (RBAC), rate limiting, and database adapters.
Install
npx skills add mrgoonie/claudekit-skills --skill better-authnpx skills add mrgoonie/claudekit-skills --skill better-auth -a claude-code -gnpx skills add mrgoonie/claudekit-skills --skill better-auth -a codex -ggemini skills install https://github.com/mrgoonie/claudekit-skills.git --path .claude/skills/better-authgh skill install mrgoonie/claudekit-skills better-authgit clone --depth 1 https://github.com/mrgoonie/claudekit-skills /tmp/mrgoonie__claudekit-skills
mkdir -p ~/.claude/skills ~/.agents/skills
cp -R /tmp/mrgoonie__claudekit-skills/.claude/skills/better-auth ~/.claude/skills/better-auth # Claude Code
cp -R /tmp/mrgoonie__claudekit-skills/.claude/skills/better-auth ~/.agents/skills/better-auth # Codex, Cursor, Gemini CLI, Copilot, OpenCode