This adds better-auth integration for Claude Code, focusing heavily on preventing a common mistake: better-auth doesn't have a d1Adapter() for Cloudflare D1 databases. You need to use Drizzle or Kysely instead. The skill documentation covers breaking changes across recent versions (it went ESM-only, changed multi-team tables, turned on admin impersonation prevention by default) and walks through proper D1 setup. Worth having if you're building auth with better-auth and Claude, especially on Cloudflare's stack where the adapter confusion has clearly tripped people up enough to warrant a dedicated skill about it.
npx skills add https://github.com/jezweb/claude-skills --skill better-auth