You arethe key.
Your visionary thinking meets agentic scale. Our SDK uses biometric-only login for users and their agents with signed receipts. Your first 50K MRUs are free.
Soft launch November 17. Only 50 team spots available.
- No credit card
- Vishing resistant
- Migrate from Clerk
02FOR DEVELOPERS
One SDK,
3 Features.
Biometric login for your users, and biometric approval for the AI agents that act for them. For any app, including apps migrating from Clerk, with one integration.
SWITCH FROM CLERK
Switch from Clerk
in an afternoon.
Import your users, point your app at the BioAuth SDK and ship.
- Import your users
- Swap in the BioAuth SDK
- Commit the import and ship
60 days free for every new app
60 days free for every new app, starting at app creation. Those 60 days don't count toward the free 50,000 MRU.
Plan your switch →03WHAT YOUR USERS EXPERIENCE
Three taps.
Nothing to remember.
Tap to sign in
Open the app or site and tap Sign in. Nothing to remember, nothing to type.
Face or fingerprint
Confirm with Face ID, Windows Hello or a fingerprint sensor. The match happens on the device.
You're in
Signed in. When an agent asks to act for you, the same face or fingerprint approves it.
BIOAUTH VS. CLERK
BioAuth vs. Clerk
| Topic | Clerk | BioAuth |
|---|---|---|
| How users sign in | Passwords, email codes, SMS, social, passkeysSource: Clerk's published pricing and docs, checked | Face or fingerprint |
| Legacy passwords to manage | YesSource: Clerk's published pricing and docs, checked | None, ever |
| Face / fingerprint sign-in | Pro plan and upSource: Clerk's published pricing and docs, checked | Every plan, including free |
| Account recovery | Email or SMS codesSource: Clerk's published pricing and docs, checked | MCR, proprietary account recovery |
| Free tier | 50,000 users, no cardSource: Clerk's published pricing and docs, checked | 50,000 users, no card |
| Team plan | Business: $300/mo, 10 seatsSource: Clerk's published pricing and docs, checked | Timber: $99/mo, 15 seats |
| SMS fees | $0.01 per SMS (US/Canada)Source: Clerk's published pricing and docs, checked | None, no SMS |
04WHAT SHIPS AT LAUNCH
Built for every app.
Built for agents.
Biometric login
Face or fingerprint is the whole login. Nothing to type. Sign-in resists interception.
Agent approval
When an AI agent wants to act, the person approves with their face or fingerprint.
Signed receipts
Each biometric approval produces a signed receipt your backend can verify.
No biometric database
Face and fingerprint matching stays on the user's device. There is no biometric database on our side.
Bound to the real site
Passkeys only answer the genuine site, so a look-alike site is much harder to use. Sign-in resists phishing.
MCR, proprietary account recovery
Users get back into their account on a new device, with no recovery fee.
Every authorization gets a receipt.
When a user or their agent approves something with a face or fingerprint, BioAuth issues a signed receipt: what was approved, when, and that the device confirmed it. Anyone can verify it against our public keys.
05ACCOUNT RECOVERY
Lose the device.
Keep the account.
MCR, proprietary account recovery, comes with BioAuth. There is no per-recovery fee.
06INSTALL WITH AI
Install with AI.
One prompt.
Give your coding agent BioAuth's llms.txt and one prompt. It adds the SDK and wires up biometric login. Full developer docs live in the developer portal.
Developer docs →Add BioAuth biometric login to this app. Follow bioauth.ai/llms.txt.- LIVE
- PUBLIC SITE NOMINAL
Ready when you are.
Get Early Access, or compare plans on the pricing page.