The fully hosted Link for Login service
Two API calls. No redirects. No token leakage. Authentication that gets out of your way.
Simple, secure, and developer-friendly authentication
Two API calls is all it takes. Start auth, verify token. Done.
Tokens never touch the browser. Zero XSS attack surface.
Create your own cookies and sessions. We don't store state.
Authentication in two simple API calls. No redirects, no complexity.
Your app collects the user's email address
Email with clickable link + backup code arrives instantly
One-click authentication or manual code entry
Your backend verifies and creates a session
// 1. Start authentication
await fetch('https://api.linkforlogin.com/auth/start', {
method: 'POST',
headers: { 'Authorization': 'Bearer YOUR_API_KEY' },
body: JSON.stringify({
email: '[email protected]',
method: 'magic_link',
validationUrl: 'https://yourapp.com/auth/verify'
})
});
// 2. Verify token (server-side)
const { user } = await fetch('https://api.linkforlogin.com/auth/verify', {
method: 'POST',
headers: { 'Authorization': 'Bearer YOUR_API_KEY' },
body: JSON.stringify({ sessionId: token })
}).then(r => r.json());
// Done! Create your sessionFrom hackathons to production, LinkForLogin scales with your needs
Ship auth in 10 minutes, not 10 hours
Simple auth for team dashboards
Focus on features, not infrastructure
Scale to millions without complexity
Learn about auth challenges and solutions
54 hours to validate. Don't waste 8 on authentication.
Building 5 apps a day with AI until auth killed our flow
How 47 hackathon teams shipped auth fast
Complete step-by-step auth integration guide