Skip to content
StyxApp

Private payments
on Solana

Send SOL without your wallet or the amount showing on chain. Try it now on Solana devnet, with test SOL. Your keys stay on your device.

Try StyxRead the docs

Try Styx, on devnet

  1. 01Connectyour wallet
  2. 02Sign
  3. 03Send and receive

Connect a wallet

One signature to start. Nothing is sent, nothing is paid.

What it costs, and where your keys are

A deposit costs 1% of the amount, plus the Solana network fee (about 0.000005 SOL). Each private payment or withdrawal costs 0.00065 SOL from your private balance; our relayer pays the Solana fees behind it. Your private balance is made on this device: its 24 words are created here and never sent to us. Your wallet signs your deposits, never your private payments. Pool settings on devnet, 2026-10-04.

Devnet onlySolana devnet, live since 2026-10-07. No real funds. Not externally audited.

How Styx works

  1. Every deposit and every payment is public. Which deposit paid, and how much, is what Styx is built to hide.

  2. STARK proofs made on your device, with no secret setup. A payment to a Styx address is sealed for its recipient with ML-KEM-768 and X25519, a hybrid pair, post-quantum through ML-KEM-768.

  3. Checked by Solana: an on-chain program verifies every proof in full. No committee, no enclave.

deposits: amount and time publicDEPOSIT0.5 SOLDEPOSIT2 SOLDEPOSIT1 SOLwhich one paid?the change flows backTO THE RECEIVERone sealed note, amount hidden
LimitsOn a quiet pool, a payment’s timing and amount can still give it away, and this site sees your IP address.
DocsHow the pool, the proofs and Styx addresses work, and where each one stops.RoadmapWhat’s live, what’s next, and what mainnet still needs.