Shared SSO for partner-site networks

One registration. One login.
Every connected partner site.

Drop OneTimeLogin into your site — most partners onboard within a few hours of receiving keys, with typical guided setup running into a working production cut-over. Your visitors keep one identity across every connected partner site — no password reset, no second account.

Founding-partner program: first 5 design partners get free Growth for 6 months. Apply →

Business Features for Modern Authentication

The essentials website owners need to launch secure SSO and manage access with confidence

Enterprise Security

Strong encryption controls, MFA, and MFA-friendly authentication flows help protect user accounts.

Fast by design

Token-based session handoff between integrated sites — no second login prompt, no repeated MFA.

Universal Access

One account can work across integrated partner sites. Register once, access trusted destinations.

Mobile Optimized

Mobile-ready authentication and MFA-friendly flows that work in any modern browser on phone, tablet, or desktop.

Advanced Analytics

Real-time dashboards with login-conversion and drop-off charts, plus exportable reports for administrators.

Easy Integration

RESTful API, webhooks, and SDKs for popular frameworks. Most partners onboard within a few hours of receiving keys.

Three steps to a shared user base

From integration to activation tracking — typical guided setup, with most partners onboarding within a few hours of receiving keys.

Connect

Drop our snippet on your site. You're live in 1 day — no platform migration required.

Invite users

Bulk-import or open registration — bring your audience in via CSV or API.

Track activations

See which partner sites your users unlock. Real-time analytics in your admin dashboard.

No More Password Fatigue

Remember one strong password instead of dozens of weak ones.

Reduced Security Risks

Centralized security means fewer attack vectors and better protection.

Time Savings

Save hours every month by eliminating repetitive login processes.

GDPR-aligned

Data handling aligned to GDPR principles. Full compliance roadmap published on /security.

Simple, capped pricing

$999 setup. Scale to a flat $499/mo ceiling. No surprise bills when traffic spikes.

Pilot

Try OneTimeLogin on one site, no card

$0 / 30-day pilot

Then $999 setup to go live.

1 site, sandbox keys
Up to 500 test registrations
Email support

Growth

For scaling sites

$99 /mo

or $999 setup + $0.05 / new reg, capped at $499/mo

3 sites, white-label branding
Webhook + REST API
Usage cap = predictable bills

Business

Flat-rate, predictable

$499 /mo flat

10 sites, SAML + OIDC
Audit log export, NET-30
Priority Slack support

See full pricing → /pricing

Built for trust

Security posture, integration proof, and pricing — all visible before you commit.

Security posture

SOC 2 Type II audit underway; target completion Q4 2026. Status page and DPA available on request. Read our security posture →

Integration proof

Drop-in snippet, REST + webhook docs, sandbox API keys, and a safe test mode before you go live. View developer docs →

Commercial clarity

Setup fees, per-registration billing, the $499/mo cap, and enterprise terms — published, not buried. See full pricing →