Adapter Smart Contract Interface

The IAdapter interface defines the standard contract interface that all adapter implementations must follow. Adapters are responsible for executing swaps on specific decentralized exchanges (DEXs) and are used by the Aggregator contract to route swaps through different protocols.

For a complete list of deployed adapter contracts and their addresses across different networks, see the Smart Contract Addresses Documentation.

Functions

swap

Executes a token swap through the adapter's underlying DEX integration, converting a specified amount of input tokens to output tokens with slippage protection.

Signature:

function swap(
    address tokenFromAddress,
    uint256 tokenFromAmount,
    address tokenToAddress,
    uint256 tokenToAmountMin,
    bytes calldata additionalParams,
    address to
) external payable

Parameters:

Name	Type	Description
tokenFromAddress	address	The address of the token to swap from.
tokenFromAmount	uint256	The amount of the input token to swap.
tokenToAddress	address	The address of the token to receive.
tokenToAmountMin	uint256	The minimum amount of the output token to receive.
additionalParams	bytes	Additional parameters specific to the adapter's DEX integration.
to	address	The address to send the output tokens to.

State Mutability: payable

Usage Notes:

• This function is called by the Aggregator contract during multi-hop swaps

• The additionalParams field allows for DEX-specific configuration (e.g., pool fees, slippage settings)

• For native token swaps, the function should handle msg.value appropriately

• The adapter should transfer the resulting tokens to the to address