## JSON-RPC

The following sections contain RPC methods that are Remote Calls available by default and allow you to interact with the actual node, query, and submit.

- **[author](#author)**

- **[chain](#chain)**

- **[state](#state)**

- **[system](#system)**


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### author

_Authoring of network items_

▸ **insertKey**(keyType: `Text`, suri: `Text`, publicKey: `Bytes`): `Bytes`
- **summary**: Insert a key into the keystore.

▸ **pendingExtrinsics**(): `Vec<Extrinsic>`
- **summary**: Returns all pending extrinsics, potentially grouped by sender

▸ **removeExtrinsic**(bytesOrHash: `Vec<ExtrinsicOrHash>`): `Vec<Hash>`
- **summary**: Remove given extrinsic from the pool and temporarily ban it to prevent reimporting

▸ **rotateKeys**(): `Bytes`
- **summary**: Generate new session keys and returns the corresponding public keys

▸ **submitAndWatchExtrinsic**(extrinsic: `Extrinsic`): `ExtrinsicStatus`
- **summary**: Submit and subscribe to watch an extrinsic until unsubscribed

▸ **submitExtrinsic**(extrinsic: `Extrinsic`): `Hash`
- **summary**: Submit a fully formatted extrinsic for block inclusion

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### chain

_Retrieval of chain data_

▸ **getBlock**(hash?: `Hash`): `SignedBlock`
- **summary**: Get header and body of a relay chain block

▸ **getBlockHash**(blockNumber?: `BlockNumber`): `Hash`
- **summary**: Get the block hash for a specific block

▸ **getFinalizedHead**(): `Hash`
- **summary**: Get hash of the last finalized block in the canon chain

▸ **getHeader**(hash?: `Hash`): `Header`
- **summary**: Retrieves the header for a specific block

▸ **subscribeFinalizedHeads**(): `Header`
- **summary**: Retrieves the best finalized header via subscription

▸ **subscribeNewHeads**(): `Header`
- **summary**: Retrieves the best header via subscription

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### state

_Query of state_

▸ **call**(method: `Text`, data: `Bytes`, block?: `Hash`): `Bytes`
- **summary**: Perform a call to a builtin on the chain

▸ **getChildKeys**(childStorageKey: `StorageKey`, key: `StorageKey`, block?: `Hash`): `Vec<StorageKey>`
- **summary**: Retrieves the keys with prefix of a specific child storage

▸ **getChildStorage**(childStorageKey: `StorageKey`, key: `StorageKey`, block?: `Hash`): `StorageData`
- **summary**: Retrieves the child storage for a key

▸ **getChildStorageHash**(childStorageKey: `StorageKey`, key: `StorageKey`, block?: `Hash`): `Hash`
- **summary**: Retrieves the child storage hash

▸ **getChildStorageSize**(childStorageKey: `StorageKey`, key: `StorageKey`, block?: `Hash`): `u64`
- **summary**: Retrieves the child storage size

▸ **getKeys**(key: `StorageKey`, block?: `Hash`): `Vec<StorageKey>`
- **summary**: Retrieves the keys with a certain prefix

▸ **getMetadata**(block?: `Hash`): `Metadata`
- **summary**: Returns the runtime metadata

▸ **getRuntimeVersion**(hash?: `Hash`): `RuntimeVersion`
- **summary**: Get the runtime version

▸ **getStorage**(key: `StorageKey`, block?: `Hash`): `StorageData`
- **summary**: Retrieves the storage for a key

▸ **getStorageHash**(key: `StorageKey`, block?: `Hash`): `Hash`
- **summary**: Retrieves the storage hash

▸ **getStorageSize**(key: `StorageKey`, block?: `Hash`): `u64`
- **summary**: Retrieves the storage size

▸ **queryStorage**(keys: `Vec<StorageKey>`, startBlock: `Hash`, block?: `Hash`): `Vec<StorageChangeSet>`
- **summary**: Query historical storage entries (by key) starting from a start block

▸ **subscribeRuntimeVersion**(): `RuntimeVersion`
- **summary**: Retrieves the runtime version via subscription

▸ **subscribeStorage**(keys: `Vec<StorageKey>`): `StorageChangeSet`
- **summary**: Subscribes to storage changes for the provided keys

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### system

_Calls to retrieve system info_

▸ **chain**(): `Text`
- **summary**: Retrieves the chain

▸ **health**(): `Health`
- **summary**: Return health status of the node

▸ **name**(): `Text`
- **summary**: Retrieves the node name

▸ **networkState**(): `NetworkState`
- **summary**: Returns current state of the network

▸ **peers**(): `Vec<PeerInfo>`
- **summary**: Returns the currently connected peers

▸ **properties**(): `ChainProperties`
- **summary**: Get a custom set of properties as a JSON object, defined in the chain spec

▸ **version**(): `Text`
- **summary**: Retrieves the version of the node