state_getStorage - Midnight

Example code for the state_getStorage JSON-RPC method. Complete guide on how to use state_getStorage JSON-RPC in GetBlock Web3 documentation.

This method returns the value associated with a specific storage key in the current best block. For historical queries, use state_getStorageAt.

Parameters

Parameter

Type

Required

Description

key

string

Yes

Hex-encoded storage key

hash

string

Block hash to query at. Defaults to the current best block

Request Example

curl --location --request POST 'https://go.getblock.io/<ACCESS-TOKEN>/' \
--header 'Content-Type: application/json' \
--data-raw '{
    "jsonrpc": "2.0",
    "method": "state_getStorage",
    "params": [
        "0x26aa394eea5630e07c48ae0c9558cef7b99d880ec681799c0cf30e8886371da9"
    ],
    "id": "getblock.io"
}'

import axios from 'axios';

const data = JSON.stringify({
    "jsonrpc": "2.0",
    "method": "state_getStorage",
    "params": [
        "0x26aa394eea5630e07c48ae0c9558cef7b99d880ec681799c0cf30e8886371da9"
    ],
    "id": "getblock.io"
});

const config = {
    method: 'post',
    url: 'https://go.getblock.io/<ACCESS-TOKEN>/',
    headers: {
        'Content-Type': 'application/json'
    },
    data: data
};

axios(config)
    .then(response => console.log(JSON.stringify(response.data, null, 2)))
    .catch(error => console.log(error));

import requests
import json

url = "https://go.getblock.io/<ACCESS-TOKEN>/"

payload = json.dumps({
    "jsonrpc": "2.0",
    "method": "state_getStorage",
    "params": [
        "0x26aa394eea5630e07c48ae0c9558cef7b99d880ec681799c0cf30e8886371da9"
    ],
    "id": "getblock.io"
})

headers = {
    'Content-Type': 'application/json'
}

response = requests.post(url, headers=headers, data=payload)
print(response.text)

use reqwest::Client;
use serde_json::json;

#[tokio::main]
async fn main() -> Result<(), Box<dyn std::error::Error>> {
    let client = Client::new();

    let payload = json!({
        "jsonrpc": "2.0",
        "method": "state_getStorage",
        "params": [
                "0x26aa394eea5630e07c48ae0c9558cef7b99d880ec681799c0cf30e8886371da9"
        ],
        "id": "getblock.io"
});

    let response = client
        .post("https://go.getblock.io/<ACCESS-TOKEN>/")
        .header("Content-Type", "application/json")
        .json(&payload)
        .send()
        .await?;

    let result: serde_json::Value = response.json().await?;
    println!("{:#?}", result);

    Ok(())
}

Response Example

{
    "jsonrpc": "2.0",
    "id": "getblock.io",
    "result": "0x040000000000000000"
}

Response Parameters

Field

Type

Description

result

string | null

Hex-encoded storage value, or null if the key is unset

Use Cases

Reading runtime storage by raw key
Implementing typed accessors in SDKs
Direct queries for tools that already have the typed metadata

Error Handling

Status Code

Error Message

Cause

403

Forbidden

Missing or invalid <ACCESS-TOKEN>

-32602

Invalid params

Request parameters are missing or malformed

429

Too Many Requests

Rate limit exceeded for your plan

SDK Integration

import { ApiPromise, WsProvider } from '@polkadot/api';

const wsProvider = new WsProvider('wss://go.getblock.io/<ACCESS-TOKEN>/');
const api = await ApiPromise.create({ provider: wsProvider });

// Call via the typed API:
const result = await api.rpc.state.getStorage("0x26aa394eea5630e07c48ae0c9558cef7b99d880ec681799c0cf30e8886371da9");
console.log(result.toJSON());

// Or call the raw JSON-RPC method:
const raw = await api.rpc.rpc.methods();
// const raw = await (api as any)._rpcCore.provider.send('state_getStorage', ["0x26aa394eea5630e07c48ae0c9558cef7b99d880ec681799c0cf30e8886371da9"]);

from substrateinterface import SubstrateInterface

substrate = SubstrateInterface(url='wss://go.getblock.io/<ACCESS-TOKEN>/')

# Generic RPC call:
result = substrate.rpc_request('state_getStorage', ["0x26aa394eea5630e07c48ae0c9558cef7b99d880ec681799c0cf30e8886371da9"])
print(result)

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Last updated 17 days ago

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