Use cases

Add authentication and transactional email to a Next.js app with one platform and one API key — no separate Clerk plus Resend setup.

Add NPS, CSAT, and custom surveys to your SaaS with built-in distribution and analytics — tied to the same user record as auth and email.

Add hosted authentication to a FastAPI backend with the AscendKit Python SDK — credentials, magic link, and OAuth without building auth yourself.

Build a multi-step onboarding journey driven by product events and timers, with email and surveys on the same user record.

Move off Clerk to AscendKit and drop the tools bolted around it — one user record covers auth, transactional email, lifecycle journeys, and surveys with no webhook sync between vendors.

You chose Better Auth for login. AscendKit is the commercial layer on top: verification email at scale, lifecycle journeys, surveys, and a dashboard — all keyed to the same user record, with no second vendor to sync.

Send transactional and lifecycle email on AWS SES without hand-configuring domain verification, DKIM, SPF, or DNS records — AscendKit automates the deliverability plumbing.

Stop copying every user into an auth vendor, an email vendor, and a survey vendor. AscendKit keys auth, transactional email, lifecycle journeys, and surveys to a single user record.

Ship Google, GitHub, and LinkedIn login without registering and maintaining your own OAuth applications — AscendKit's OAuth proxy uses shared credentials.

Add passwordless magic link sign-in to a Next.js App Router app, with the link email delivered through your own verified domain — no second email vendor to wire up.

The exit path documented up front: what AscendKit stores, how the Better Auth schema maps onto a self-hosted setup, what carries across, and what does not.

Add a pre-launch waitlist to your SaaS and convert it into real accounts at launch — waitlist, auth, and welcome email in one platform.

Win back inactive users with a timer-driven re-engagement journey that reads real product activity — no separate automation tool synced to your auth.

Add hosted auth and transactional email to a Remix app using AscendKit's Better Auth foundation — credentials, OAuth, and email from one project.

Add auth and transactional email to a React app built with Vite — drop-in components and one user record across auth and email.

Protect an Express API with AscendKit access tokens — verify tokens on each request and resolve every call to a project user.

Secure a Hono API with AscendKit access tokens — lightweight token verification that resolves each request to a project user.

Close the loop on customer feedback by triggering surveys from lifecycle events and acting on responses automatically — all on one user record.

Subscribe to auth and lifecycle events with signed, filterable webhooks — verified in both the JS and Python SDKs.

Set up auth, email, journeys, and surveys conversationally through AscendKit's MCP server in Claude Code, Cursor, or any MCP client.