starknet_getClass

Get the contract class definition in the given block associated with the given hash

Parameters

Parameter	Type	Description
block_id	string	Block reference ("latest", "l1_accepted", block hash, or block number)
class_hash	felt252	Class hash

Request

{
  "jsonrpc": "2.0",
  "method": "starknet_getClass",
  "params": [
    {
      "block_hash": "0x05abbad1e5"
    },
    "0x05abbad1e5"
  ],
  "id": 1
}

Returns

The contract class, if found

Contract class definition with Sierra program, entry points, and ABI

Errors

Code	Message
24	Block not found
28	Class hash not found

Examples

cURL

curl -X POST https://api-starknet-mainnet.n.dwellir.com/YOUR_API_KEY \
  -H "Content-Type: application/json" \
  -d '{
    "jsonrpc": "2.0",
    "method": "starknet_getClass",
    "params": [
      {
        "block_hash": "0x05abbad1e5"
      },
      "0x05abbad1e5"
    ],
    "id": 1
  }'

JavaScript

import { RpcProvider } from 'starknet';

const provider = new RpcProvider({
  nodeUrl: 'https://api-starknet-mainnet.n.dwellir.com/YOUR_API_KEY',
});

const payload = {
  method: 'starknet_getClass',
  params: [
    {
      "block_hash": "0x05abbad1e5"
    },
    "0x05abbad1e5"
  ]
};

const result = await provider.fetchEndpoint(payload.method, payload.params);
console.log(result);