better-auth-integrations

Original：🇺🇸 English

Translated

Better Auth framework integrations for TypeScript. Use when wiring route handlers in Next.js, SvelteKit, Remix, Express, Hono, or other web frameworks.

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Sourcebobmatnyc/claude-mpm-skills

Added on2026-02-04

NPX Install

npx skill4agent add bobmatnyc/claude-mpm-skills better-auth-integrations

SKILL.md Content

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Better Auth Integrations

Goals

Mount the Better Auth handler at
```
/api/auth/*
```
(or a custom base path).
Use framework helpers where available.
Ensure cookies and headers flow correctly in SSR and server actions.

Quick start

Create an
```
auth
```
instance (see
```
better-auth-core
```
).
Add a catch-all route for
```
/api/auth/*
```
.
Use a framework helper (or
```
auth.handler
```
) to return a Response.

Next.js App Router

ts

import { auth } from "@/lib/auth";
import { toNextJsHandler } from "better-auth/next-js";

export const { GET, POST } = toNextJsHandler(auth);

Next.js Pages Router

ts

import { auth } from "@/lib/auth";
import { toNodeHandler } from "better-auth/node";

export const config = { api: { bodyParser: false } };
export default toNodeHandler(auth.handler);

Cookie handling in Next.js server actions

Use the

nextCookies

plugin so server actions set cookies correctly.

ts

import { betterAuth } from "better-auth";
import { nextCookies } from "better-auth/next-js";

export const auth = betterAuth({
  // ...config
  plugins: [nextCookies()],
});

Guardrails

Keep the base path consistent between server and client.
Prefer framework helpers when available.
Avoid running custom body parsers before the auth handler.

References

toolchains/platforms/auth/better-auth/better-auth-integrations/references/nextjs.md

toolchains/platforms/auth/better-auth/better-auth-integrations/references/frameworks.md