# system

### **accountNextIndex(accountId: `AccountId`): `Index`**

* **interface**: `api.rpc.system.accountNextIndex`
* **jsonrpc**: `system_accountNextIndex`
* **summary**: Retrieves the next accountIndex as available on the node.

### **addLogFilter(directives: `Text`): `Null`**

* **interface**: `api.rpc.system.addLogFilter`
* **jsonrpc**: `system_addLogFilter`
* **summary**: Adds the supplied directives to the current log filter.

### **addReservedPeer(peer: `Text`): `Text`**

* **interface**: `api.rpc.system.addReservedPeer`
* **jsonrpc**: `system_addReservedPeer`
* **summary**: Adds a reserved peer.

### **chain(): `Text`**

* **interface**: `api.rpc.system.chain`
* **jsonrpc**: `system_chain`
* **summary**: Retrieves the chain.

### **chainType(): `ChainType`**

* **interface**: `api.rpc.system.chainType`
* **jsonrpc**: `system_chainType`
* **summary**: Retrieves the chain type.

### **dryRun(extrinsic: `Bytes`, at?: `BlockHash`): `ApplyExtrinsicResult`**

* **interface**: `api.rpc.system.dryRun`
* **jsonrpc**: `system_dryRun` (alias=`system_dryRunAt`)
* **summary**: Dry runs an extrinsic at a given block.

### **health(): `Health`**

* **interface**: `api.rpc.system.health`
* **jsonrpc**: `system_health`
* **summary**: Returns the health status of the node.

### **localListenAddresses(): `Vec<Text>`**

* **interface**: `api.rpc.system.localListenAddresses`
* **jsonrpc**: `system_localListenAddresses`
* **summary**: The addresses include a trailing /p2p/ with the local PeerId, and are thus suitable to be passed to addReservedPeer or as a bootnode address for example.

### **localPeerId(): `Text`**

* **interface**: `api.rpc.system.localPeerId`
* **jsonrpc**: `system_localPeerId`
* **summary**: Returns the base58-encoded PeerId of the node.

### **name(): `Text`**

* **interface**: `api.rpc.system.name`
* **jsonrpc**: `system_name`
* **summary**: Retrieves the node name.

### **nodeRoles(): `Vec<NodeRole>`**

* **interface**: `api.rpc.system.nodeRoles`
* **jsonrpc**: `system_nodeRoles`
* **summary**: Returns the roles the node is running as.

### **peers(): `Vec<PeerInfo>`**

* **interface**: `api.rpc.system.peers`
* **jsonrpc**: `system_peers`
* **summary**: Returns the currently connected peers.

### **properties(): `ChainProperties`**

* **interface**: `api.rpc.system.properties`
* **jsonrpc**: `system_properties`
* **summary**: Gets a custom set of properties as a JSON object, defined in the chain specification.

### **removeReservedPeer(peerId: `Text`): `Text`**

* **interface**: `api.rpc.system.removeReservedPeer`
* **jsonrpc**: `system_removeReservedPeer`
* **summary**: Removes a reserved peer.

### **reservedPeers(): `Vec<Text>`**

* **interface**: `api.rpc.system.reservedPeers`
* **jsonrpc**: `system_reservedPeers`
* **summary**: Returns the list of reserved peers.

### **resetLogFilter(): `Null`**

* **interface**: `api.rpc.system.resetLogFilter`
* **jsonrpc**: `system_resetLogFilter`
* **summary**: Resets the log filter to Substrate defaults.

### **syncState(): `SyncState`**

* **interface**: `api.rpc.system.syncState`
* **jsonrpc**: `system_syncState`
* **summary**: Returns the state of the syncing of the node.

### **version(): `Text`**

* **interface**: `api.rpc.system.version`
* **jsonrpc**: `system_version`
* **summary**: Retrieves the version of the node.


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