POST /rpc

POST

https://casper.nownodes.io/rpc

Authorizations

ApiKeyAuthApiKeyAuth

api-key string

NOWNodes API key passed in the api-key header.

Retrieves the value stored under a specific dictionary key in global state.

Body

application/json

idinteger

Unique request identifier

jsonrpcstring

JSON-RPC protocol version

methodstring

RPC method to call

paramsobject

Parameters for the dictionary query

Show child attributes

state_root_hashstring

The root hash of the state from which to query

dictionary_identifierobject

Identifier of the dictionary item

Show child attributes

URefobject

Dictionary item identified by a URef

Show child attributes

seed_urefstring

The unforgeable reference (URef) of the dictionary

dictionary_item_keystring

The key of the dictionary item to query

Response

200OK

Successful response with dictionary item value

POST /rpc

curl -X POST 'https://casper.nownodes.io/rpc' \
  -H 'Content-Type: application/json' \
  -d '{
    "id": 1,
    "jsonrpc": "2.0",
    "method": "state_get_dictionary_item",
    "params": {
      "state_root_hash": "0d755cdc493b13b325f1736f19898b1f77c76c89590f792502eacddba4cfa897",
      "dictionary_identifier": {
        "URef": {
          "seed_uref": "uref-09480c3248ef76b603d386f3f4f8a5f87f597d4eaffd475433f861af187ab5db-007",
          "dictionary_item_key": "example_key_123"
        }
      }
    }
  }'

import { JsonRpcProvider } from "ethers";

const provider = new JsonRpcProvider("https://casper.nownodes.io/rpc");
const result = await provider.send("state_get_dictionary_item", {
  "state_root_hash": "0d755cdc493b13b325f1736f19898b1f77c76c89590f792502eacddba4cfa897",
  "dictionary_identifier": {
    "URef": {
      "seed_uref": "uref-09480c3248ef76b603d386f3f4f8a5f87f597d4eaffd475433f861af187ab5db-007",
      "dictionary_item_key": "example_key_123"
    }
  }
});
console.log(result);

require 'eth'
require 'json'
require 'net/http'

uri = URI('https://casper.nownodes.io/rpc')
request = Net::HTTP::Post.new(uri)
request['Content-Type'] = 'application/json'
request.body = '{
  "jsonrpc": "2.0",
  "method": "state_get_dictionary_item",
  "params": {
    "state_root_hash": "0d755cdc493b13b325f1736f19898b1f77c76c89590f792502eacddba4cfa897",
    "dictionary_identifier": {
      "URef": {
        "seed_uref": "uref-09480c3248ef76b603d386f3f4f8a5f87f597d4eaffd475433f861af187ab5db-007",
        "dictionary_item_key": "example_key_123"
      }
    }
  },
  "id": 1
}'

response = Net::HTTP.start(uri.hostname, uri.port, use_ssl: true) do |http|
  http.request(request)
end

puts JSON.parse(response.body)

from web3 import Web3

w3 = Web3(Web3.HTTPProvider("https://casper.nownodes.io/rpc"))
response = w3.provider.make_request("state_get_dictionary_item", {
  "state_root_hash": "0d755cdc493b13b325f1736f19898b1f77c76c89590f792502eacddba4cfa897",
  "dictionary_identifier": {
    "URef": {
      "seed_uref": "uref-09480c3248ef76b603d386f3f4f8a5f87f597d4eaffd475433f861af187ab5db-007",
      "dictionary_item_key": "example_key_123"
    }
  }
})
print(response)

import { createPublicClient, http } from "viem";

const client = createPublicClient({
  transport: http("https://casper.nownodes.io/rpc"),
});

const result = await client.request({
  method: "state_get_dictionary_item",
  params: {
  "state_root_hash": "0d755cdc493b13b325f1736f19898b1f77c76c89590f792502eacddba4cfa897",
  "dictionary_identifier": {
    "URef": {
      "seed_uref": "uref-09480c3248ef76b603d386f3f4f8a5f87f597d4eaffd475433f861af187ab5db-007",
      "dictionary_item_key": "example_key_123"
    }
  }
},
});

console.log(result);

const endpoint = "https://casper.nownodes.io/rpc";
const apiKey = "YOUR_API_KEY";

async function nownodesRequest(payload) {
  const response = await fetch(endpoint, {
    method: "POST",
    headers: {
      "Content-Type": "application/json",
      "api-key": apiKey,
    },
    body: JSON.stringify(payload),
  });

  return response.json();
}

const result = await nownodesRequest({ jsonrpc: "2.0", method: "state_get_dictionary_item", params: {
  "state_root_hash": "0d755cdc493b13b325f1736f19898b1f77c76c89590f792502eacddba4cfa897",
  "dictionary_identifier": {
    "URef": {
      "seed_uref": "uref-09480c3248ef76b603d386f3f4f8a5f87f597d4eaffd475433f861af187ab5db-007",
      "dictionary_item_key": "example_key_123"
    }
  }
}, id: 1 });
console.log(result);

const response = await fetch('https://casper.nownodes.io/rpc', {
  method: 'POST',
  headers: {
    'Content-Type': 'application/json',
  },
  body: JSON.stringify({
      "id": 1,
      "jsonrpc": "2.0",
      "method": "state_get_dictionary_item",
      "params": {
        "state_root_hash": "0d755cdc493b13b325f1736f19898b1f77c76c89590f792502eacddba4cfa897",
        "dictionary_identifier": {
          "URef": {
            "seed_uref": "uref-09480c3248ef76b603d386f3f4f8a5f87f597d4eaffd475433f861af187ab5db-007",
            "dictionary_item_key": "example_key_123"
          }
        }
      }
    }),
});

const data = await response.json();

import requests

payload = {
  "id": 1,
  "jsonrpc": "2.0",
  "method": "state_get_dictionary_item",
  "params": {
    "state_root_hash": "0d755cdc493b13b325f1736f19898b1f77c76c89590f792502eacddba4cfa897",
    "dictionary_identifier": {
      "URef": {
        "seed_uref": "uref-09480c3248ef76b603d386f3f4f8a5f87f597d4eaffd475433f861af187ab5db-007",
        "dictionary_item_key": "example_key_123"
      }
    }
  }
}

response = requests.post('https://casper.nownodes.io/rpc', json=payload)
data = response.json()

require 'net/http'
require 'json'

uri = URI('https://casper.nownodes.io/rpc')
request = Net::HTTP::Post.new(uri)
request['Content-Type'] = 'application/json'
request.body = '{
    "id": 1,
    "jsonrpc": "2.0",
    "method": "state_get_dictionary_item",
    "params": {
      "state_root_hash": "0d755cdc493b13b325f1736f19898b1f77c76c89590f792502eacddba4cfa897",
      "dictionary_identifier": {
        "URef": {
          "seed_uref": "uref-09480c3248ef76b603d386f3f4f8a5f87f597d4eaffd475433f861af187ab5db-007",
          "dictionary_item_key": "example_key_123"
        }
      }
    }
  }'

response = Net::HTTP.start(uri.hostname, uri.port, use_ssl: true) { |http| http.request(request) }
data = JSON.parse(response.body)

Request Body

{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "state_get_dictionary_item",
  "params": {
    "state_root_hash": "0d755cdc493b13b325f1736f19898b1f77c76c89590f792502eacddba4cfa897",
    "dictionary_identifier": {
      "URef": {
        "seed_uref": "uref-09480c3248ef76b603d386f3f4f8a5f87f597d4eaffd475433f861af187ab5db-007",
        "dictionary_item_key": "example_key_123"
      }
    }
  }
}

200

{
  "jsonrpc": "2.0",
  "id": 1,
  "result": {
    "api_version": "2.0.0",
    "stored_value": {
      "CLValue": {
        "cl_type": "U512",
        "bytes": "0500bca06501",
        "parsed": "6000000000"
      }
    },
    "merkle_proof": "01000000021f13adab50a177006a9ee7f8d6fd7349c6845cf8fb1734835e262eeb9c8006e3000000000000090400000000ad0700000..."
  }
}

Documentation

How to migrate to NOWNodes

Authorizations

Body

Response