MojoAuth vs Clerk: drop-in React UI versus API-first flexibility

import { MojoAuth } from "@mojoauth/server-sdk";

const mojo = new MojoAuth({ apiKey: process.env.MOJOAUTH_API_KEY });

await mojo.email.sendOtp({ email: "user@example.com" });
const { user, accessToken } = await mojo.email.verifyOtp({
  email: "user@example.com",
  otp: req.body.otp,
});

import { SignIn } from "@clerk/nextjs";

export default function Page() {
  return <SignIn routing="path" path="/sign-in" />;
}

// in middleware.ts
import { clerkMiddleware } from "@clerk/nextjs/server";
export default clerkMiddleware();

The Clerk example is two files for a working multi-method sign-in flow with hosted UI. That is genuinely impressive and not something MojoAuth (or any other vendor) matches for React. The trade-off is that the moment you step outside React, the productivity advantage disappears.

Most migrations complete in 2–3 weeks. The slower part is replacing embedded components with either MojoAuth's hosted UI or a custom UI on top of the headless SDK.

1. Week 1: Export users via Clerk's Backend API. Import with bcrypt hashes into MojoAuth. Stand up parallel auth path.
2. Week 2: Replace `<SignIn/>` components with MojoAuth UI or build custom. Shift traffic via feature flag, monitor, decommission Clerk.