better-auth-authentication

Better Auth Authentication Goals Enable email/password authentication and social providers. Implement sign-up, sign-in, sign-out, and verification flows. Handle redirects and errors consistently. Quick start Enable emailAndPassword and configure socialProviders. Create a client with createAuthClient. Use signUp.email, signIn.email, signIn.social, and signOut on the client. import { betterAuth } from "better-auth";

export const auth = betterAuth({ emailAndPassword: { enabled: true }, socialProviders: { github: { clientId: process.env.GITHUB_CLIENT_ID as string, clientSecret: process.env.GITHUB_CLIENT_SECRET as string, }, }, });

import { createAuthClient } from "better-auth/client";

const authClient = createAuthClient();

await authClient.signUp.email({ email, password, name, });

await authClient.signIn.email({ email, password, callbackURL: "/dashboard", });

await authClient.signIn.social({ provider: "github", callbackURL: "/dashboard", });

await authClient.signOut();

Email verification Provide emailVerification.sendVerificationEmail to send the verification link. Use emailAndPassword.requireEmailVerification to enforce verification before sign-in. Social providers Configure providers in socialProviders with provider-specific credentials. Use signIn.social to start OAuth flows. Pass callbackURL, errorCallbackURL, and newUserCallbackURL for redirects. Guardrails Call client methods from the client only. Keep secrets in server-only env variables. Use rememberMe to control persistent sessions on email/password sign-in. References toolchains/platforms/auth/better-auth/better-auth-authentication/references/email-password.md toolchains/platforms/auth/better-auth/better-auth-authentication/references/providers.md