StakeStone Review 2026: From ETH Staking to Neo Bank

StakeStone is a DeFi protocol on Ethereum that began as a liquid staking project built around STONE, a token that represents staked ETH. DefiLlama lists it under liquid staking with about $18.7 million in total value locked, two audits, and a listing date of September 2023.

The homepage now positions StakeStone as an autonomous neo bank. It offers a personal account with social login, gasless transactions, cross-border payments, and a yield-bearing dollar product called STONEUSD with an advertised rate of up to 12% APY. It also pitches payments infrastructure for AI agents.

The protocol has its own token, STO. Reports in April 2026 describe a sharp price spike and pullback, and a transfer of 16 million STO from a distribution contract to a Bitget deposit wallet. These are market events, not signs of protocol health either way, but they show how volatile the token has been.

StakeStone started as a liquid staking protocol on Ethereum. When you deposit ETH, you receive STONE, a token that represents your stake. The value of STONE rises relative to ETH as staking and restaking rewards accrue, so you hold one token that earns yield while staying usable elsewhere in DeFi.

The current product, as the homepage describes it, adds a Yield Layer. For ETH, yield comes from staking and restaking protocols. For BTC and stablecoins, which do not earn yield natively, the protocol says it uses market-neutral strategies managed with institutional custodial partners. Positions, settlements, and exchange rate updates are recorded onchain.

On top of the yield layer sits an account interface. Users sign in with email or social accounts and can send money, pay by scanning, and hold a yield-bearing dollar asset called STONEUSD. A separate feature targets AI agents, with verification and payment controls.

StakeStone does not publish a fee schedule on its homepage. Fees on yield, withdrawals, or payments are not stated there, so users should check the app and documentation before depositing.

The homepage says gas costs are handled behind the scenes for users, but it does not say who ultimately bears them or whether they are built into the yield rate. The advertised APY should be read as a headline figure, not a guaranteed net return.

DefiLlama lists two audits for StakeStone, and the homepage mentions a code audit by security firms, but it does not name the auditors on the page. It also states weekly custodian attestations and weekly proof of reserve. Users should read the transparency page and the audit reports themselves.

The model mixes onchain and custodial elements. BTC and stablecoin yield comes from market-neutral strategies managed by custodial partners, so users take counterparty risk in addition to smart-contract risk. The homepage describes funds as held onchain or with regulated custodians but does not name the custodians or any licence for the neo bank features.

STO is a volatile token, so avoid treating its price moves as a measure of safety. Check that the services are available and legal where you live before using them.

StakeStone is for crypto users who want yield on ETH, BTC, or stablecoins without managing many positions themselves, and for newcomers who prefer social login and gasless use. It also targets developers and businesses building payments or AI agent tools. It is a poor fit for anyone who needs fully self-custodied, purely onchain yield or a published fee schedule up front.