Pay for Sage.
Privately.

Deposit ETH once. Each call runs on a short-lived key that Levanto can't link to your wallet.

01

Wallet

Connect the wallet you'll deposit from.
02

Deposit

Amount $
Up to $50 while the protocol is new. You pay the network fee. Withdraw what's left at any time; after 90 days, the vault pays any remaining balance to Levanto.
03
Use Sage

Text I was charged twice this month. Please refund one charge. Yes/no question
Spending cap for this key
Only what you use is charged. The key stops working when it expires.
Key

Base URL

Expires
04

Withdraw
To address
Settles any open key first, then sends the rest of your balance.

How it works

Deposit. Your ETH goes into an open-source vault contract, as a private note only your browser can spend.
Prove, don't reveal. Your browser proves it holds enough balance without saying which deposit is yours, and gets a short-lived key.
Call Sage. Use the key like any API key. When it expires, only what you used comes off your balance.

Experimental: the protocol is new and unaudited. Keep deposits small. Your note lives in this browser; clearing site data before withdrawing loses it. Built on zkAPI.

Pay for Sage.Privately.

Wallet

Deposit

Use Sage

Withdraw

How it works

Pay for Sage.
Privately.