Better Auth + Convex + TanStack Start

Overview

This skill provides guidance for integrating Better Auth authentication with Convex backend and TanStack Start framework. It covers the complete setup process from installation to SSR-compatible authentication flows.

When to Use This Skill

• Setting up authentication in a new Convex + TanStack Start project
• Troubleshooting Better Auth configuration issues
• Implementing sign up, sign in, or sign out flows
• Configuring SSR authentication with expectAuth: true
• Adding authenticated server functions
• Understanding the auth provider hierarchy

Quick Reference

Required Packages