Passwordless first
Magic links and passkeys by default. Passwords remain available, but treated as the exception rather than the rule.
Identity, hosted properly
Authentication, made considered again.
A complete identity platform — passwordless, MFA, organizations, SSO — for teams who care about taste, trust, and the developer experience that comes from sweating the details.
What's inside
Everything identity should be — nothing it shouldn't.
MFA that doesn't annoy
TOTP, WebAuthn, push. Adaptive policies that step up only when risk demands it, never when it doesn't.
Real organizations
Multi-tenant primitives that map to how teams actually work — orgs, projects, environments, scoped roles.
SDKs people enjoy
TypeScript-first, source-mapped, framework-aware. No undocumented quirks, no surprise breaking changes.
For developers
Verify a session in three lines.
The SDK is small, fully typed, and refuses to leak implementation details into your business code. Drop it in, ship.
Browse the SDK reference →import { Klauthed } from '@klauthed/sdk';
const auth = new Klauthed({
publishableKey: process.env.KLAUTHED_PUBLISHABLE_KEY,
});
// In a handler — verify the request's session
export async function handler(req) {
const session = await auth.sessions.verify(req);
if (!session) return new Response('unauthorized', { status: 401 });
return new Response(`hello ${session.user.email}`);
}Trusted by teams shipping software that handles serious things
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