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

# nodeOperatorModule sub-class

The following readme describes all the functions and their parameters exposed by the `nodeOperatorModule` class of the K2 SDK. This sub-class contains all the important functions from the K2 Node Operator Module contract of the K2 Lending protocol.

## getK2LendingContract function

This function can be used to get the K2 Lending contract address set in the K2 Node operator module contract.

### Using getK2LendingContract function

```javascript theme={null}
await sdk.nodeOperatorModule.getK2LendingContract();
```

### Return parameters

ETH address of the K2Lending contract.

## getReporterRegistryContract function

This function can be used to get the reporter registry contract address set in the K2 Node operator module contract.

### Using getReporterRegistryContract function

```javascript theme={null}
await sdk.nodeOperatorModule.getReporterRegistryContract();
```

### Return parameters

ETH address of the Reporter registry contract.

## batchNodeOperatorKick function

Report multiple BLS keys for kicking from K2 pool.

#### Input Parameters

blsPublicKeys: List of BLS public keys to kick\
effectiveBalances: List of effective balance in string for respective BLS public keys\
designatedVerifierSignatures: List of verifier signatures of the format SignatureECDSAT (defined in the K2-SDK) for the respective BLS public keys

### Using batchNodeOperatorKick function

```javascript theme={null}
await sdk.nodeOperatorModule.batchNodeOperatorKick(
  blsPublicKeys,
  effectiveBalances,
  designatedVerifierSignatures
);
```

### Return parameters

Transaction details if the transaction is successful.

## nodeOperatorClaim function

Batch node operator claims must come with an effective balance report.

#### Input Parameters

blsPublicKeys: List of BLS public keys to kick\
effectiveBalances: List of effective balance in string for respective BLS public keys\
designatedVerifierSignatures: List of verifier signatures of the format SignatureECDSAT (defined in the K2-SDK) for the respective BLS public keys

### Using nodeOperatorClaim function

```javascript theme={null}
await sdk.nodeOperatorModule.nodeOperatorClaim(
  blsPublicKeys,
  effectiveBalances,
  designatedVerifierSignatures
);
```

### Return parameters

Transaction details if the transaction is successful.

## isValidEffectiveBalanceReport function

Check whether a kick due to effective balance is valid

#### Input Parameters

blsPublicKey: BLS public key to kick\
effectiveBalance: Effective balance in string for the respective BLS public key\
designatedVerifierSignature: Verifier signature of the format SignatureECDSAT (defined in the K2-SDK) for the respective BLS public key

### Using isValidEffectiveBalanceReport function

```javascript theme={null}
await sdk.nodeOperatorModule.isValidEffectiveBalanceReport(
  blsPublicKey,
  effectiveBalance,
  designatedVerifierSignature
);
```

### Return parameters

`true` if report is valid, `false` otherwise.

## isNewBLSKeyPermitted function

Check whether a BLS public key si permitted or not.

### Input Parameters

blsPublicKey: BLS public key

### Using isNewBLSKeyPermitted function

```javascript theme={null}
await sdk.nodeOperatorModule.isNewBLSKeyPermitted(blsPublicKey);
```

### Return parameters

`true` if BLS public key is valid, `false` otherwise.