Synthetix is one of DeFi's oldest protocols, operating since 2018. It provides the on-chain infrastructure for synthetic assets and perpetuals — primarily on Optimism — and serves as the liquidity backend for several front-end trading platforms.
What Synthetix Does
Synthetix lets users create synthetic assets (Synths) that track the price of real-world assets without holding them directly. The system is backed by SNX stakers who collectively collateralize all outstanding Synths.
Synths: ERC-20 tokens that track an asset's price. sUSD (synthetic USD), sBTC (synthetic BTC), sETH. Synths can be minted, traded, and composed in DeFi without price impact — they trade at oracle price, not against AMM liquidity.
sUSD: Synthetix's native stablecoin, minted by SNX stakers at a 400%+ collateral ratio. sUSD is the base currency for all Synthetix trading.
SNX Staking: The Collateral Layer
SNX stakers are the counterparty for all synthetic asset positions. When you buy sBTC using sUSD and sBTC price rises, your profit comes from the staker pool (stakers take a collective debt position).
Why stake SNX?
- Earn trading fees (split from all Synthetix protocol fees)
- Earn SNX inflation rewards
- Exposure to the Synthetix ecosystem's growth
Risk: Stakers take on "debt" proportional to their stake. If the system's outstanding Synths appreciate significantly (e.g., everyone is long and assets moon), stakers' debt increases. Active debt management is required.
Synthetix Perps v3
Synthetix Perps is the protocol's primary product in 2026. It powers the perpetual futures on Kwenta, Polynomial, and other front-ends built on top of Synthetix infrastructure.
How it works: Traders open leveraged positions (long/short) using sUSD as collateral. Positions are settled against Pyth oracle prices. SNX stakers collectively back the system — they profit when traders net lose and vice versa.
Key advantages over other perp DEXes:
- No price impact on large trades (oracle pricing, not AMM)
- Deep synthetic liquidity for assets that have thin on-chain markets
- Composable: other DeFi protocols can build perp exposure into their products
Front-Ends: Kwenta and Others
Synthetix is backend infrastructure — it doesn't have its own trading UI. Front-end platforms build on top:
Kwenta: Most popular Synthetix perp trading interface. Clean UI, leverage up to 50x, BTC/ETH/SOL and many other markets.
Polynomial: Automated options and perp vaults built on Synthetix. Delta-neutral strategies using Synthetix perps as the hedging layer.
dHEDGE: Asset management protocol where managers use Synthetix to build leveraged positions inside DeFi funds.
SNX Token
SNX is the governance and staking token. Beyond staking rewards and fee sharing, SNX holders vote on governance proposals via the Spartan Council — an elected body that manages protocol parameters.
Synthetix has undergone multiple governance iterations. The current structure separates core contributors, the Spartan Council, and community governance.