> For the complete documentation index, see [llms.txt](https://futaba.gitbook.io/docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://futaba.gitbook.io/docs/protocol/gateway/receive.md).

# Receive

This function is the endpoint from which [Relayer](/docs/protocol/relayer.md) obtains the proof and returns it to the src chain.

```solidity
struct QueryResponse {
  bytes32 queryId;
  bytes proof;
}

function receiveQuery(QueryResponse memory response) external;
```

<table><thead><tr><th width="148.5">Field</th><th>Description</th></tr></thead><tbody><tr><td><code>response</code></td><td><code>QueryResponse</code> data</td></tr></tbody></table>

What the `receiveQuery` function does:

* Verify if Gelato's [Relayer](/docs/protocol/relayer.md) executed the function
* Verify the proof and extract the acquisition data
  * Done through the interface by the [Light Client Contract](/docs/protocol/light-client.md)
* Pay fees to the [Relayer](/docs/protocol/relayer.md)
* Return data to the user

To return data to the User Contract, the User Contract must inherit the following interface:

```solidity
interface IReceiver {
    function receiveQuery(
        bytes32 queryId,
        bytes[] memory results,
        QueryType.QueryRequest[] memory queries,
        bytes memory message
    ) external;
}
```


---

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