> For the complete documentation index, see [llms.txt](https://docs.tokentable.xyz/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.tokentable.xyz/for-developers/unlocker/evm/apis/utilities/external-hook.md).

# External Hook

## ITTHook

### didCall

```solidity
function didCall(bytes originalMsgData, address originalMsgSender) external
```

Forwards the call context from the hooked contract.

*Reverts within hooks will revert the hooked contract as well.*

#### Parameters

| Name              | Type    | Description                                  |
| ----------------- | ------- | -------------------------------------------- |
| originalMsgData   | bytes   | Forwarded calldata from the called function. |
| originalMsgSender | address | Forwarded sender from the called function.   |