Covers the full surface — 40+ OAuth providers (Google, GitHub, Discord, Apple, Microsoft, and more), 20+ plugins (2FA, magic links, passkeys, organizations/multi-tenant, enterprise SSO/SAML, SCIM provisioning, Stripe/Polar billing, JWT/Bearer, API keys), and database adapters (Prisma, Drizzle, MongoDB, raw SQL). Also covers migration paths from Auth.js, Clerk, Auth0, Supabase, and WorkOS. While Better Auth itself is framework-agnostic, this skill's architecture guidance (proxy.ts, App Router API route) is Next.js-specific — for Prisma schema/query details see prisma-7.

Better Auth - Complete Authentication

TypeScript-first authentication library with 40+ OAuth providers and 20+ plugins.

Agent Workflow (MANDATORY)

Before ANY implementation, spawn 3 agents in parallel, one Agent call each with a name:

1. fuse-ai-pilot:explore-codebase - Analyze existing auth setup and patterns
2. fuse-ai-pilot:research-expert - Verify latest Better Auth docs via Context7/Exa
3. mcp__context7__query-docs - Check providers/plugins availability

After implementation, run fuse-ai-pilot:sniper for validation.