Research-mind toolchains-platforms-auth-better-auth-better-auth-integrations

Better Auth Integrations

install

source · Clone the upstream repo

git clone https://github.com/MacPhobos/research-mind

Claude Code · Install into ~/.claude/skills/

T=$(mktemp -d) && git clone --depth=1 https://github.com/MacPhobos/research-mind "$T" && mkdir -p ~/.claude/skills && cp -r "$T/.claude/skills/toolchains-platforms-auth-better-auth-better-auth-integrations" ~/.claude/skills/macphobos-research-mind-toolchains-platforms-auth-better-auth-better-auth-integr && rm -rf "$T"

manifest: .claude/skills/toolchains-platforms-auth-better-auth-better-auth-integrations/skill.md

source content

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

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

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

Next.js Pages Router

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.

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