# eth\_getUncle

```
web3.eth.getUncle(blockHashOrBlockNumber, uncleIndex [, returnTransactionObjects] [, callback])
```

#### Parameters

1. The block number or hash. Or the string `"earliest"`, `"latest"` or `"pending"` as in the [default block parameter](https://web3js.readthedocs.io/en/v1.3.0/web3-eth.html#eth-defaultblock).
2. The index position of the uncle.
3. (optional, default `false`) If specified `true`, the returned block will contain all transactions as objects. By default it is `false` so, there is no need to explictly specify false. And, if `false` it will only contains the transaction hashes.
4.  (optional) Optional callback, returns an error object as first parameter and the result as second.

#### Returns

the returned uncle

```
```


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.clv.org/portal/technical-documentation/web3-compatibility/eth_getunclebyblocknumberandindex.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.