Better Auth Joins Vercel

Short summary

Better Auth, an open-source auth framework, is joining Vercel to continue building framework-agnostic auth with new investment in AI agent authentication. This Next.js Weekly roundup also covers Turbopack updates in Next.js 16.3, Vercel Container Registry, AI SDK 7 with MCP support, Meta's open-sourced Astryx design system, and various React performance and testing tools. The newsletter includes migration tooling, WebSocket RFC proposals, and Drizzle ORM's NPM publishing issue.

• •Better Auth joins Vercel with focus on secure, revocable auth for AI agents
• •AI SDK 7 adds MCP Apps, tool approvals, durable workflows, and terminal UI
• •Meta open-sources Astryx design system with 150+ accessible React components

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