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

# Admin RPC Methods

The `admin` api provides methods for controlling and monitoring Kona's consensus node operations.

## `admin_postUnsafePayload`

Posts an unsafe payload to the network.

| Client | Method invocation                                            |
| ------ | ------------------------------------------------------------ |
| RPC    | `{"method": "admin_postUnsafePayload", "params": [payload]}` |

### Parameters

* `payload` (`OpExecutionPayloadEnvelope`): The execution payload envelope to post

### Example

```js theme={null}
// > {"jsonrpc":"2.0","id":1,"method":"admin_postUnsafePayload","params":[{...payload...}]}
{"jsonrpc":"2.0","id":1,"result":null}
```

## `admin_sequencerActive`

Returns whether the sequencer is currently active.

| Client | Method invocation                     |
| ------ | ------------------------------------- |
| RPC    | `{"method": "admin_sequencerActive"}` |

### Example

```js theme={null}
// > {"jsonrpc":"2.0","id":1,"method":"admin_sequencerActive","params":[]}
{"jsonrpc":"2.0","id":1,"result":true}
```

**Note**: This method will return a "Method not found" error if the node is running in validator mode (sequencer not enabled).

## `admin_startSequencer`

Starts the sequencer.

| Client | Method invocation                    |
| ------ | ------------------------------------ |
| RPC    | `{"method": "admin_startSequencer"}` |

### Example

```js theme={null}
// > {"jsonrpc":"2.0","id":1,"method":"admin_startSequencer","params":[]}
{"jsonrpc":"2.0","id":1,"result":null}
```

**Note**: This method will return a "Method not found" error if the node is running in validator mode (sequencer not enabled).

## `admin_stopSequencer`

Stops the sequencer and returns the hash of the last processed block.

| Client | Method invocation                   |
| ------ | ----------------------------------- |
| RPC    | `{"method": "admin_stopSequencer"}` |

### Example

```js theme={null}
// > {"jsonrpc":"2.0","id":1,"method":"admin_stopSequencer","params":[]}
{"jsonrpc":"2.0","id":1,"result":"0x1234567890abcdef1234567890abcdef1234567890abcdef1234567890abcdef"}
```

**Note**: This method will return a "Method not found" error if the node is running in validator mode (sequencer not enabled).

## `admin_conductorEnabled`

Returns whether the conductor is enabled.

| Client | Method invocation                      |
| ------ | -------------------------------------- |
| RPC    | `{"method": "admin_conductorEnabled"}` |

### Example

```js theme={null}
// > {"jsonrpc":"2.0","id":1,"method":"admin_conductorEnabled","params":[]}
{"jsonrpc":"2.0","id":1,"result":false}
```

**Note**: This method will return a "Method not found" error if the node is running in validator mode (sequencer not enabled).

## `admin_setRecoverMode`

Sets the recovery mode for the sequencer.

| Client | Method invocation                                      |
| ------ | ------------------------------------------------------ |
| RPC    | `{"method": "admin_setRecoverMode", "params": [mode]}` |

### Parameters

* `mode` (`bool`): Whether to enable recovery mode (true) or disable it (false)

### Example

```js theme={null}
// > {"jsonrpc":"2.0","id":1,"method":"admin_setRecoverMode","params":[true]}
{"jsonrpc":"2.0","id":1,"result":null}
```

**Note**: This method will return a "Method not found" error if the node is running in validator mode (sequencer not enabled).

## `admin_overrideLeader`

Overrides the leader in the conductor.

| Client | Method invocation                    |
| ------ | ------------------------------------ |
| RPC    | `{"method": "admin_overrideLeader"}` |

### Example

```js theme={null}
// > {"jsonrpc":"2.0","id":1,"method":"admin_overrideLeader","params":[]}
{"jsonrpc":"2.0","id":1,"result":null}
```

**Note**: This method will return a "Method not found" error if the node is running in validator mode (sequencer not enabled).