Welcome to Senddy

Your money, nobody's business. Private payments that earn yield and work everywhere.

What is Senddy?#

Senddy is a privacy-preserving payment platform built on zero-knowledge cryptography. It lets you hold, send, and spend digital dollars privately — with no one able to see your balance, your transactions, or your counterparties. Not even us.

Your money earns yield automatically, and you can send it privately by username or turn part of your balance into a virtual Senddy Prepaid Card for supported online purchases.

No crypto knowledge required. Fund your account from a bank, debit card, Venmo, or Cash App. Use it like any other payment app — except everything is private.

Why does this matter?#

Your bank sells your transaction data. Venmo broadcasts your payments. Your statement shows every purchase to anyone with access.

Senddy fixes this. Every transaction is verified using zero-knowledge proofs — cryptographic guarantees that your payment is valid without revealing a single detail about it.

For Users#

Get started in under a minute. Deposit funds, earn yield, send money privately, and create a virtual prepaid card when you need online checkout.

• Getting Started — Create your account and make your first payment
• Earning Yield — How your balance grows automatically
• Sending Payments — Send to anyone by username, phone, or QR code
• Senddy Prepaid Card — Turn private USDC into a virtual prepaid card

For Developers & Businesses#

Add private payments to your app with 0% per transaction. Typed TypeScript SDKs and a REST API — integrate in an afternoon.

• Developer Overview — Why Senddy for your business
• Quickstart — Get your first integration running in 5 minutes
• SDK Reference — Full TypeScript SDK documentation

How it works, briefly#

1. Deposit — Add money from your bank, debit card, or a fresh one-time stablecoin address
2. Transact — Send, receive, or withdraw using proofs that verify validity without revealing details
3. Earn — Your balance earns yield from DeFi protocols automatically

Want to go deeper? Read the Architecture section.