> ## Documentation Index
> Fetch the complete documentation index at: https://docs.cow.bleu.builders/llms.txt
> Use this file to discover all available pages before exploring further.

# Good After Time API

> API reference for Good After Time programmatic orders with time-delayed execution and optional price checking.

# Good After Time (GAT) API

Good After Time orders are time-delayed programmatic orders that execute only after a specified timestamp, featuring optional price checking and off-chain buy amount determination.

## Key Parameters

| Parameter                | Description                                  |
| ------------------------ | -------------------------------------------- |
| `sellToken` / `buyToken` | The token pair for the trade                 |
| `receiver`               | Where proceeds are sent                      |
| `sellAmount`             | Quantity of tokens to trade                  |
| `minSellBalance`         | Balance threshold preventing duplicate fills |
| `startTime` / `endTime`  | UNIX timestamps for order validity window    |
| `allowPartialFill`       | Solver flexibility setting                   |
| `priceCheckerPayload`    | Optional price validation data               |
| `appData`                | IPFS hash reference                          |

## Price Validation

When enabled, the price checker validates that:

```
buyAmount >= (expectedOut * (MAX_BPS - allowedSlippage)) / MAX_BPS
```

Where `MAX_BPS` equals 10,000 basis points.

## Error Handling

| Error              | Condition                                                                      |
| ------------------ | ------------------------------------------------------------------------------ |
| `PollTryAtEpoch`   | Block timestamp precedes `startTime` ("too early")                             |
| `OrderNotValid`    | Owner lacks required sellToken balance ("balance insufficient")                |
| `PollTryNextBlock` | Insufficient expected output given slippage tolerance ("price checker failed") |

The implementation supports flexible buy amounts while maintaining replay protection through balance verification.