Now in Public Beta — v1.0

Authentication
Infrastructure for
Modern Apps Secure APIs Developers Scale-Ups

Send OTPs & Magic Links via API in seconds. Build secure, passwordless authentication into your product with just a few lines of code.

auth.ts
import { Authink } from '@authink/sdk';
const authink = new Authink('sk_live_...');
await authink.sendOTP({
email: "user@example.com"
});
// ✅ OTP sent in 142ms
99.99%
Uptime SLA
<50ms
Avg Latency
10M+
Auth Requests/Mo
5,000+
Developers

Everything you need to authenticate users

A complete authentication platform that scales with your product, from MVP to enterprise.

Email OTP Authentication

Send one-time passwords to any email address. Verify users securely with time-limited codes and configurable expiry.

Magic Link Login

Passwordless authentication with magic links sent directly to your users' inbox. One click to sign in.

Secure API Keys

Generate, rotate, and manage API keys with fine-grained permissions, scope control, and automatic expiration.

Usage Analytics

Track authentication events, monitor success rates, and gain deep insights into user behavior and fraud patterns.

Developer SDK

First-class SDKs for JavaScript, Python, Go, Ruby, and more. Integrate authentication in under 5 minutes.

Enterprise Security

SOC 2 compliant, end-to-end encryption, rate limiting, and intelligent fraud detection built in from day one.

How it works

Three simple steps to add authentication to your app.

1

Install the SDK

Add Authink to your project with a single npm install. Works with any JavaScript framework.

npm i @authink/sdk
2

Send an OTP

Call the sendOTP method with the user's email. The code is delivered in seconds.

authink.sendOTP({ email })
3

Verify & Auth

Verify the code and get a session token. That's it — your user is authenticated.

authink.verify({ code })

Ready to get started?

Start authenticating users in minutes. No credit card required.