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Table of Contents​

Supported Tokens​

Default token registry is loaded from the active network config and includes:

  • ETH (native)
  • WETH
  • CRX
  • USDT0
  • CUSD
  • STCUSD
  • USDe
  • USDm
  • MEGA

Custom tokens can be added from the UI and are persisted locally.

Routing (Smart: V3 + V2)​

In the live app, route preference is smart:

  • V3 routes are explored first across available fee tiers.
  • V2 routes are available as fallback and for split optimization.
  • Split routes can combine V3 and V2 legs when output is better.

ETH to WETH conversions use direct wrap/unwrap, not pool routing.

Quotes and Slippage​

  • V3 quote path uses Uniswap V3 Quoter V2.
  • V2 quote path uses reserve-based quote logic.
  • Slippage tolerance is user-configurable.
  • The app can re-quote before submit when price movement exceeds guard thresholds.

Approvals and Spenders​

For ERC20 sell tokens:

  • First approval: ERC20 allowance to Permit2 (0x000000000022D473030F116dDEE9F6B43aC78BA3).
  • Second allowance: Permit2 allowance to Universal Router (0x2c61d16Ad68f030bec95370Ab8a0Ba60e7E7B0a6).

Direct ETH to WETH wrap/unwrap does not require token approvals.

Execution​

All non-wrap swaps execute through Universal Router commands:

  • V3_SWAP_EXACT_IN
  • V2_SWAP_EXACT_IN
  • WRAP_ETH / UNWRAP_WETH

This means both V3 and V2 routes are executed through the same router surface.

Example​

Swap 1 ETH to USDT0:

  1. Select ETH as input and USDT0 as output.
  2. The app computes a smart route (V3, V2, or split).
  3. Review min received and slippage.
  4. Submit the transaction and verify on MegaETH explorer.