Authentication, payments and data services for developers
Passin is a developer platform operated by Noptcha, LLC, a Delaware limited liability company (United States). We provide backend infrastructure for web applications: unified sign-in, payment processing, and data storage. All delivered via simple APIs with transparent per-use pricing.
Services
Authentication
Unified identity and session management across your products. Email and password sign-in, passwordless codes, OAuth (Google, GitHub), account pages, webhook notifications. One user pool per product or shared across your suite.
$0.02 per active user/month
Active = signed in at least once that month. Includes unlimited sign-ins, unlimited sessions, account self-service pages and webhook deliveries.
Payments
One API in front of Stripe, Alipay, WeChat Pay and crypto processors: create, query, close and refund orders, signed webhook events with automatic retries, and reconciliation. You connect your own merchant accounts; the money goes straight from the provider to you, and we never hold your funds.
0.5% of processed volume
On top of the provider's own fees, which they charge you directly. No setup fee.
Database & Cache Coming soon
A managed SQLite-compatible database and a Redis-compatible cache, behind the same API keys as Auth and Payments. In development; not available yet.
Join the waitlist below and we will tell you when they launch.
Built for real use
Our own products (AI-powered tools and website security services) run on this infrastructure in production: every sign-in and every payment on them goes through Passin.
Get started
Auth and Payments are live. We are onboarding customers by hand while we finish the self-serve console: email contact@passin.io with what you are building, and see Pricing for details.
Interested in Database or Cache? Join the waitlist: