Welcome to our comprehensive FAQ about Tethys, the decentralized exchange (DEX) built on the Optimism layer-2 network. Here, we answer the most common questions about its features, usage, and unique advantages in the DeFi ecosystem.

What is Tethys?

Tethys is a decentralized exchange (DEX) designed for the Optimism network, offering low-fee and fast token swaps using an automated market maker (AMM) model. It aims to provide a user-friendly trading experience while enabling liquidity provision and yield farming.

Launched in 2021, Tethys has grown into a key DeFi hub on Optimism, with features like concentrated liquidity (Tethys V2) and cross-chain capabilities. Its native token, TETHYS, powers governance and fee distribution.

How does Tethys work?

Tethys operates as an AMM, meaning trades are executed against liquidity pools rather than an order book. Users can swap tokens instantly, and liquidity providers (LPs) deposit assets into pools to earn trading fees and TETHYS rewards.

The platform uses a “veTokenomics” model: users can lock TETHYS to receive veTETHYS, which grants voting power on governance proposals and boosts LP rewards. This encourages long-term participation.

How to use Tethys on Optimism?

To use Tethys, first connect your wallet (e.g., MetaMask) to the Optimism network. Then, visit the Tethys app and select “Swap” to exchange tokens, or “Liquidity” to add funds to a pool.

  • Bridge assets from Ethereum using the official Optimism bridge.
  • Approve token spending and confirm transactions.
  • For staking, acquire TETHYS and lock it to earn veTETHYS.

Always double-check token addresses and use the official Tethys website to avoid phishing.

What are the main features of Tethys?

Tethys offers a suite of DeFi services: efficient token swaps, liquidity provision, yield farming, and staking with governance. Its unique features include concentrated liquidity, dynamic fees, and a veTokenomics model.

Key highlights:

  • Low fees thanks to Optimism’s L2 technology.
  • High capital efficiency via concentrated ranges.
  • Community governance through veTETHYS.
  • Cross-chain interoperability plans.

These features make Tethys competitive with other L2 DEXs while catering to both traders and LPs.

Why choose Tethys over other DEXs?

Tethys stands out due to its deep integration with Optimism, offering extremely low transaction costs and fast confirmation times. Its veTokenomics reduces token inflation and aligns incentives between traders, LPs, and governance.

Compared to Uniswap or SushiSwap on L1, Tethys provides lower fees and a more sustainable reward structure. However, it has a smaller user base, which can affect liquidity for some pairs.

What is the TETHYS token and its use cases?

TETHYS is the native governance token of the platform, used for protocol governance, fee sharing, and incentivizing liquidity. By locking TETHYS, users receive veTETHYS, which enhances their voting power and boosts farm yields.

The token has a capped supply, and 80% of trading fees are used to buy back TETHYS to reward veTETHYS holders. This deflationary mechanism aims to increase token value over time.

How to provide liquidity and earn on Tethys?

To provide liquidity, navigate to the “Liquidity” section, choose a pool, and deposit an equal value of two assets. You’ll receive LP tokens representing your share, which can be staked in farms to earn TETHYS rewards.

Earnings come from trading fees (0.3% per swap) and TETHYS emissions. To maximize returns, lock TETHYS to boost your farm APY. Beware of impermanent loss when prices diverge.

Is Tethys safe and secure?

Tethys has undergone audits by reputable firms like PeckShield and SlowMist, and its smart contracts are open-source. However, as with all DeFi, there are inherent risks including smart contract bugs, hacking, and market volatility.

Best practices: use a hardware wallet, start with small amounts, and stay informed about protocol updates. The team has a bug bounty program to encourage security research.

Final Thoughts

Tethys is a promising DEX on Optimism, offering low fees, efficient trading, and a robust tokenomics model. Whether you're a trader or a liquidity provider, it provides compelling opportunities within the growing L2 ecosystem.

As with any DeFi project, it's essential to conduct your own research and understand the risks. With its innovative approach and active community, Tethys is certainly a platform to watch in 2026 and beyond.