Add passkeys and adaptive MFA to your Next.js app with NextAuth.js.

Authsignal integrates with NextAuth.js (Auth.js) via the Node SDK and Web SDK. Ship phishing-resistant passkeys with autofill, a no-code rules engine, and pre-built UI. Live in weeks, not months.

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Delivering world-class results for:

Fastest way to integrate MFA and passkeys with NextAuth.js

Add passkeys with autofill to your NextAuth.js app with minimal engineering lift

Pre-built UI, UI components, or custom. Choose the integration path that fits your stack.

Phishing-resistant authentication live in weeks, backed by a no-code rules engine

From daunting rebuild to shipped in weeks

Drop-in

Rebuilding authentication in-house can be daunting.

The cost and complexity shouldn't hold your business back.

SECURITY

Stay focused on what you do best. Trust Authsignal for authentication.

Enable passkeys and MFA in weeks, not months — with a visual rules builder and secure user journeys out of the box.

JOURNEY

Authentication across the entire customer journey

Passkeys at sign-in. Step-up at transaction. Verification at account recovery. Authsignal orchestrates authentication at every sensitive touchpoint, not just the login screen — from a single integration.

3 ways to integrate with NextAuth.js

Get started for free with up to 2000 monthly active users.

“Implementing FIDO authentication through Authsignal has been a game-changer for our members’ digital experience. It’s secure, seamless and sets a new standard for trust in online banking.”

Herb Wulff

Treasury and Agency

Treasury and Agency Banking Manager

Partnering with Authsignal is simple and powerful

Start today, no cost

Enable passkeys and MFA in weeks, not months — with a visual rules builder and secure user journeys out of the box.

Quick & easy integration

Integration made easy: Follow our step-by-step guides to get up and running without friction.

Expert support anytime

Access our exclusive private Slack channel for tailored advice and real-time support from our team.

Flexible pricing options

Start for free. Drop-in authentication for production-grade security and compliance, without replacing your existing identity stack.

FAQ

Do I need to replace NextAuth.js to use Authsignal?

No. Authsignal integrates alongside NextAuth.js using Auth0 Actions or the CredentialsProvider. Your existing NextAuth.js configuration, session management, and providers all stay in place. Authsignal adds passkeys and MFA capabilities on top.

Does Authsignal work with the new Auth.js (NextAuth v5)?

Authsignal's integration works with NextAuth.js. Check our documentation for the latest compatibility guidance with Auth.js v5 as the migration evolves.

Why choose Authsignal?

Deploy passkeys and MFA in weeks instead of months. Flexible integration options including pre-built UI, UI components, or headless SDKs. A visual no-code rules engine for adaptive authentication policies. Real-time developer support, comprehensive documentation, and step-by-step integration guides. SOC 2 Type 2, ISO 27001, and FIDO Alliance certified.

What does it cost to integrate with Authsignal?

You can start integrating on our free tier immediately — up to 1,000 monthly active users at no cost. For production deployments, plans start at $1,099/month. Enterprise pricing is available for larger deployments. See our pricing page for details.

Which MFA methods does Authsignal support?

Passkeys (FIDO2/WebAuthn), biometrics, SMS OTP, email OTP, WhatsApp OTP, push notifications, authenticator apps (TOTP), and magic links. All methods are available from a single integration and managed via the no-code rules engine.

What programming languages and SDKs are supported?

Server SDKs for Node.js, Python, Ruby, Java, C#, PHP, and Go. Client SDKs for Web (JavaScript/TypeScript), React Native, iOS (Swift), and Android (Kotlin). Plus a REST API for any language.