For developers

Add private sign-in in minutes.

The @mwen/js-sdk gives your users a private, credential-based sign-in that respects their data — and yours.

Terminal

$ npm install @mwen/js-sdk

Built the right way

Open protocol

Built on OID4VP and SD-JWT-VC — open IETF/W3C standards, not proprietary APIs.

No backend required

The wallet is the user's browser. No mwen server is involved in the credential exchange.

TypeScript-first

Full type safety throughout. Zod-validated protocol messages. No runtime surprises.

Framework-agnostic

React bindings included. Core SDK is plain TypeScript — works with Next.js, Remix, SvelteKit, or vanilla.

Integration

Four steps to private sign-in

Install the SDK

npm install @mwen/js-sdk

Configure the provider

import { MwenProvider } from '@mwen/js-sdk/react';

export function App() {
  return (
    <MwenProvider>
      {/* your app */}
    </MwenProvider>
  );
}

Request credentials

import { useMwen } from '@mwen/js-sdk/react';

function SignInButton() {
  const { authenticate, status } = useMwen();

  return (
    <button
      onClick={() => authenticate({ age: true })}
      disabled={status === 'pending'}
    >
      {status === 'pending' ? 'Verifying…' : 'Verify with mwen'}
    </button>
  );
}

Verify server-side

import { verifyAccessTokenFromHeader } from '@mwen/js-sdk/server';

export async function GET(req: Request) {
  const payload = await verifyAccessTokenFromHeader(
    req.headers.get('Authorization') ?? ''
  );
  // payload.sub — the user's per-app DID
  // payload.age_over_18 — true if disclosed
}

Ready to integrate?

Full API reference, protocol spec, and examples in the docs.

Read the docs Install the extension