Skip to main content

EMPXRouter Contract

The EMPXRouter is the foundation of the system, providing gas-optimized token swapping with intelligent routing across multiple DEX protocols.

Core Concepts​

Adapters​

Adapters are trusted smart contracts that interface with individual DEX protocols. Each adapter implements standardized query and swap functions, allowing the router to interact with any DEX through a unified interface.

Routing Strategies​

Strategy 1: Converge Swap (Split-Merge) This strategy splits the input amount across multiple paths to an intermediate token, then merges all intermediate tokens into the final output through a single adapter. Ideal for situations where multiple routes exist to a common intermediate token (e.g., stablecoins). Example: Swap WETH → USDC by splitting WETH across 3 DEXes to get USDT (intermediate), then swapping all USDT → USDC through the best route.

converge swap

Strategy 2: Standard Split This strategy splits the input across multiple complete paths from input to output token, then aggregates the results. Each path can have multiple hops through different tokens. Example: Swap WETH → DAI by routing 60% through WETH→USDC→DAI and 40% through WETH→WBTC→DAI.

Security Features​

  • Reentrancy Protection: All swap functions are protected with OpenZeppelin’s ReentrancyGuard.
  • Adapter Validation: Only whitelisted adapters can be used, preventing malicious contract interaction.
  • Slippage Protection: Minimum output amount checks prevent sandwich attacks and price manipulation.
  • Deadline Enforcement: Transaction expiry prevents stale orders from executing.
  • Trusted Token List: Maintainer-controlled whitelist ensures only verified tokens are routed.