Passwordless Authentication Implementation Guide
A practical step-by-step guide to adding passwordless authentication with magic links, WebAuthn, passkeys, backend integration, and migration planning.
Read MoreAdd magic link authentication to your app in minutes. No passwords, no hassle. Just secure, frictionless login with a tiny free testing tier and paid plans for live usage.
POST https://api.magicauth.app/send-link
{
"email": "user@example.com",
"app_key": "your_app_key",
"redirect_url": "https://yourapp.com/dashboard"
}
// User receives email with magic link
// User clicks link -> automatic sign-inEverything you need for passwordless authentication
Deploy in minutes with just 2 API calls. No complex setup, no database configuration.
HMAC verification, rate limiting, domain whitelisting, and automatic token expiration.
Every login is backed by a consistent MagicAuth.app trust layer, with clear provider branding and simple handoff back to your site.
Track link sends, clicks, verifications, and unique users with our built-in dashboard.
Get real-time notifications for logins, failures, and suspicious activity.
Powered by Cloudflare's edge network. <50ms latency worldwide.
MagicAuth combines passwordless email login with rCAPTCHA protection so bots cannot freely request magic links.
Start with a minimal free tier for testing, then move to a paid plan when you are ready for live usage.
Create an app, copy the combo widget or direct API code, and start testing secure magic links from day one.
Start on the tiny free testing tier, then choose a paid plan for live usage. Need captcha-only verification instead? Use rCAPTCHA.app for standalone bot protection.
Custom app limits, login volume, support terms, and compliance review for high-volume production authentication.
Contact SalesExperience passwordless authentication in action. Enter your email and we'll send you a magic link to create your free webmaster account!
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The perfect combination: passwordless authentication + bot protection for paid login flows
Users click a link in their email. That's it. No password resets, no "forgot password" emails, no weak passwords to worry about. Just instant, secure access.
rCAPTCHA verifies users before they can request a magic link, blocking bots and spam while keeping the experience smooth for real users.
MagicAuth is a paid authentication service. There are no developer payouts, credits, or custom earnings attached to login usage.
Use the free tier to test, then select Starter, Growth, Business, or Enterprise for production applications.
Ready to revolutionize your app's authentication?
Join thousands of developers who've already made the switch to passwordless auth protected by rCAPTCHA.
Deep dives into passwordless auth, security, and the future of login
A practical step-by-step guide to adding passwordless authentication with magic links, WebAuthn, passkeys, backend integration, and migration planning.
Read MoreLearn how email-based magic link authentication works, why tokens should expire after one use, and where teams still need phishing-resistant authentication.
Read the Magic Link GuideCompare one-time passcodes and magic links in real passwordless login flows, including usability, deliverability, and account-security tradeoffs.
Read MoreSecurity references: NIST SP 800-63B distinguishes phishing-resistant cryptographic authentication from manually entered or out-of-band methods, while the OWASP Authentication Cheat Sheet documents practical authentication and session safeguards.
Join thousands of developers using MagicAuth for secure, frictionless authentication.
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