state_getStorage - Kusama RPC Method
Query storage values on Kusama. Essential for reading chain state for parachain experimentation, early feature deployment, and production-grade testing with real value.
Returns a storage entry at a specific key on Kusama.
Why Kusama? Build on Polkadot's canary network for real-world testing with live economic conditions with 7-day governance cycles (vs 1 month on Polkadot), lower bonding requirements, live KSM token economy, and first-to-market feature testing.
Use Cases
- State queries - Read on-chain storage values
- Account balances - Query account data for parachain experimentation, early feature deployment, and production-grade testing with real value
- Pallet storage - Access runtime storage items
- Historical state - Query state at specific blocks
Request Parameters
Storage key (hex-encoded)
Block hash for historical query
Response Body
Code Examples
curl \
-X POST \
-H "Content-Type: application/json" \
-d '{
"jsonrpc": "2.0",
"method": "state_getStorage",
"params": [""],
"id": 1
}'import { ApiPromise, WsProvider } from '@polkadot/api';
const provider = new WsProvider('');
const api = await ApiPromise.create({ provider });
// Query account balance
const account = '5GrwvaEF5zXb26Fz9rcQpDWS57CtERHpNehXCPcNoHGKutQY';
const accountInfo = await api.query.system.account(account);
console.log('Free balance:', accountInfo.data.free.toString());
// Query at specific block
const blockHash = '0x91b171bb158e2d3848fa23a9f1c25182fb8e20313b2c1eb49219da7a70ce90c3';
const historicalBalance = await api.query.system.account.at(blockHash, account);
console.log('Historical balance:', historicalBalance.data.free.toString());
await api.disconnect();import requests
def get_storage(key, block_hash=None):
url = ''
params = [key] if block_hash is None else [key, block_hash]
payload = {
'jsonrpc': '2.0',
'method': 'state_getStorage',
'params': params,
'id': 1
}
response = requests.post(url, json=payload)
return response.json()['result']
# Query :code storage (runtime wasm)
storage_key = ''
value = get_storage(storage_key)
print(f'Storage value: {value[:66]}...' if value else 'None')Related Methods
state_getMetadata- Get runtime metadatastate_getKeysPaged- Enumerate storage keys