Synthetix is a foundational DeFi infrastructure protocol that provides synthetic asset liquidity to other DeFi platforms. Rather than trading directly on Synthetix, most users interact through frontends built on top of it — primarily Kwenta, Polynomial, and Lyra for options. Synthetix provides the underlying collateral and liquidity rails.
SNX Staking and Debt Pool
Synthetix's core mechanism requires SNX holders to stake their tokens as collateral (at a 500% collateralization ratio historically, now more dynamic) to mint sUSD — Synthetix's native stablecoin. Staked SNX earns trading fees and SNX inflation rewards.
The "debt pool" is Synthetix's defining mechanism: all sUSD in existence is collectively backed by all staked SNX. When traders profit on synthetic ETH longs, all SNX stakers collectively bear that loss (their debt denominated in sUSD increases). This socialized P&L model means SNX staking is not passive — stakers have directional exposure to trader activity.
Synthetix Perps v3
Synthetix Perps v3 restructured the protocol significantly, moving to isolated collateral markets rather than the shared debt pool for derivatives. Each market (ETH-PERP, BTC-PERP, etc.) has its own isolated LP pool, reducing systemic risk from single-market losses. Kwenta and other frontends access these isolated markets.
Fee Structure
Synthetix generates revenue through maker/taker fees on perpetuals. Frontends built on Synthetix charge additional integration fees on top (Kwenta charges 0.06% taker). Fee revenue distributes to SNX stakers who provide collateral to the specific markets generating fees.
SNX Token
SNX stakers earn trading fees proportional to their contribution to active collateral. Inflation rewards (in SNX) supplement fee income. The combination of fee yield and inflation has historically provided 10–30% APY for active stakers who hedge their debt exposure. Unstaked SNX earns nothing.