# clique

The `clique` API provides access to the state of the clique consensus engine. This API can be used to manage signer votes and to check the health of a private network.

### clique\_getSnapshot <a href="#clique-getsnapshot" id="clique-getsnapshot"></a>

Retrieves a snapshot of all clique state at a given block.

| CLIENT  | METHOD INVOCATION                                           |
| ------- | ----------------------------------------------------------- |
| Console | clique.getSnapshot(blockNumber)                             |
| RPC     | {"method": "clique\_getSnapshot", "params": \[blockNumber]} |

Example:

```javascript
> clique.getSnapshot(5463755)
{
  hash: "0x018194fc50ca62d973e2f85cffef1e6811278ffd2040a4460537f8dbec3d5efc",
  number: 5463755,
  recents: {
    5463752: "0x42eb768f2244c8811c63729a21a3569731535f06",
    5463753: "0x6635f83421bf059cd8111f180f0727128685bae4",
    5463754: "0x7ffc57839b00206d1ad20c69a1981b489f772031",
    5463755: "0xb279182d99e65703f0076e4812653aab85fca0f0"
  },
  signers: {
    0x42eb768f2244c8811c63729a21a3569731535f06: {},
    0x6635f83421bf059cd8111f180f0727128685bae4: {},
    0x7ffc57839b00206d1ad20c69a1981b489f772031: {},
    0xb279182d99e65703f0076e4812653aab85fca0f0: {},
    0xd6ae8250b8348c94847280928c79fb3b63ca453e: {},
    0xda35dee8eddeaa556e4c26268463e26fb91ff74f: {},
    0xfc18cbc391de84dbd87db83b20935d3e89f5dd91: {}
  },
  tally: {},
  votes: []
}
```

### clique\_getSnapshotAtHash <a href="#clique-getsnapshotathash" id="clique-getsnapshotathash"></a>

Retrieves the state snapshot at a given block.

| CLIENT  | METHOD INVOCATION                                               |
| ------- | --------------------------------------------------------------- |
| Console | clique.getSnapshotAtHash(blockHash)                             |
| RPC     | {"method": "clique\_getSnapshotAtHash", "params": \[blockHash]} |

### clique\_getSigner <a href="#clique-getsigner" id="clique-getsigner"></a>

Returns the signer for a specific clique block. Can be called with either a blocknumber, blockhash or an rlp encoded blob. The RLP encoded blob can either be a block or a header.

| CLIENT  | METHOD INVOCATION                                    |
| ------- | ---------------------------------------------------- |
| Console | clique.getSigner(blockNrOrHashOrRlp)                 |
| RPC     | {"method": "clique\_getSigner", "params": \[string]} |

### clique\_getSigners <a href="#clique-getsigners" id="clique-getsigners"></a>

Retrieves the list of authorized signers at the specified block number.

| CLIENT  | METHOD INVOCATION                                          |
| ------- | ---------------------------------------------------------- |
| Console | clique.getSigners(blockNumber)                             |
| RPC     | {"method": "clique\_getSigners", "params": \[blockNumber]} |

### clique\_getSignersAtHash <a href="#clique-getsignersathash" id="clique-getsignersathash"></a>

Retrieves the list of authorized signers at the specified block hash.

| CLIENT  | METHOD INVOCATION                                           |
| ------- | ----------------------------------------------------------- |
| Console | clique.getSignersAtHash(blockHash)                          |
| RPC     | {"method": "clique\_getSignersAtHash", "params": \[string]} |

### clique\_proposals <a href="#clique-proposals" id="clique-proposals"></a>

Returns the current proposals the node is voting on.

| CLIENT  | METHOD INVOCATION                              |
| ------- | ---------------------------------------------- |
| Console | clique.proposals()                             |
| RPC     | {"method": "clique\_proposals", "params": \[]} |

### clique\_propose <a href="#clique-propose" id="clique-propose"></a>

Adds a new authorization proposal that the signer will attempt to push through. If the auth parameter is true, the local signer votes for the given address to be included in the set of authorized signers. With auth set to false, the vote is against the address.

| CLIENT  | METHOD INVOCATION                                         |
| ------- | --------------------------------------------------------- |
| Console | clique.propose(address, auth)                             |
| RPC     | {"method": "clique\_propose", "params": \[address, auth]} |

### clique\_discard <a href="#clique-discard" id="clique-discard"></a>

This method drops a currently running proposal. The signer will not cast further votes (either for or against) the address.

| CLIENT  | METHOD INVOCATION                                   |
| ------- | --------------------------------------------------- |
| Console | clique.discard(address)                             |
| RPC     | {"method": "clique\_discard", "params": \[address]} |

### clique\_status <a href="#clique-status" id="clique-status"></a>

This is a debugging method which returns statistics about signer activity for the last 64 blocks. The returned object contains the following fields:

* inturnPercent: percentage of blocks signed in-turn
* sealerActivity: object containing signer addresses and the number of blocks signed by them
* numBlocks: number of blocks analyzed

| CLIENT  | METHOD INVOCATION                           |
| ------- | ------------------------------------------- |
| Console | clique.status()                             |
| RPC     | {"method": "clique\_status", "params": \[]} |

Example:

```javascript
> clique.status()
{
  inturnPercent: 100,
  numBlocks: 64,
  sealerActivity: {
    0x42eb768f2244c8811c63729a21a3569731535f06: 9,
    0x6635f83421bf059cd8111f180f0727128685bae4: 9,
    0x7ffc57839b00206d1ad20c69a1981b489f772031: 9,
    0xb279182d99e65703f0076e4812653aab85fca0f0: 10,
    0xd6ae8250b8348c94847280928c79fb3b63ca453e: 9,
    0xda35dee8eddeaa556e4c26268463e26fb91ff74f: 9,
    0xfc18cbc391de84dbd87db83b20935d3e89f5dd91: 9
  }
}
```


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