> For the complete documentation index, see [llms.txt](https://docs.vulpefi.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.vulpefi.com/aggregation-protocol/limit-order-protocol/smart-contracts/interfaces/preinteraction.md).

# PreInteraction

Interface for interactor which acts between `maker => taker` and `taker => maker` transfers.

### Functions[​](https://docs.1inch.io/docs/limit-order-protocol/smart-contract/interfaces/PreInteractionNotificationReceiver#functions) <a href="#functions" id="functions"></a>

#### preInteraction[​](https://docs.1inch.io/docs/limit-order-protocol/smart-contract/interfaces/PreInteractionNotificationReceiver#preinteraction-1) <a href="#preinteraction-1" id="preinteraction-1"></a>

```javascript
function preInteraction(
  address taker,
  address makerAsset,
  address takerAsset,
  uint256 makingAmount,
  uint256 takingAmount,
  bytes interactiveData
) external
```

**Parameters:**[**​**](https://docs.1inch.io/docs/limit-order-protocol/smart-contract/interfaces/PreInteractionNotificationReceiver#parameters)

| Name              | Type    | Description |
| ----------------- | ------- | ----------- |
| `taker`           | address |             |
| `makerAsset`      | address |             |
| `takerAsset`      | address |             |
| `makingAmount`    | uint256 |             |
| `takingAmount`    | uint256 |             |
| `interactiveData` | bytes   |             |