SNX is a cryptocurrency that powers the Synthetix decentralised finance (DeFi) platform. The platform is built on the Ethereum blockchain and provides a range of financial instruments, including synthetic assets that track the price of traditional assets like stocks, commodities, and currencies. The value of SNX tokens is tied to the value of these synthetic assets and the platform's performance. SNX holders can participate in the platform's governance and decision-making processes and earn rewards for staking their tokens.