> For the complete documentation index, see [llms.txt](/llms.txt).

# `eth_getUncleCountByBlockHash`

Returns the number of uncles in a block from a block matching the given block hash. This method uses [150 credits](/services/get-started/pricing/) from your daily balance.

## Parameters[​](#parameters "Direct link to Parameters")

`block hash`: [_Required_] A string representing the hash (32 bytes) of a block.

## Returns[​](#returns "Direct link to Returns")

`block uncle count`: A hexadecimal equivalent of the integer representing the number of uncles in the block.

## Example[​](#example "Direct link to Example")

Replace `<YOUR-API-KEY>` with an API key from your [Infura dashboard](https://app.infura.io/).

### Request[​](#request "Direct link to Request")

- curl
- WSS

```
curl https://zksync-mainnet.infura.io/v3/<YOUR-API-KEY> \
  -X POST \
  -H "Content-Type: application/json" \
  -d '{"jsonrpc": "2.0", "method": "eth_getUncleCountByBlockHash", "params": ["0xb3b20624f8f0f86eb50dd04688409e5cea4bd02d700bf6e79e9384d47d6a5a35"], "id": 1}'

```

```
wscat -c wss://zksync-mainnet.infura.io/ws/v3/<YOUR-API-KEY> -x '{"jsonrpc": "2.0", "method": "eth_getUncleCountByBlockHash", "params": ["0xb3b20624f8f0f86eb50dd04688409e5cea4bd02d700bf6e79e9384d47d6a5a35"], "id": 1}'

```

### Response[​](#response "Direct link to Response")

- JSON

```
{
  "jsonrpc": "2.0",
  "id": 1,
  "result": "0x1"
}

```