Simple Connect

The following example shows how to instantiate a Polkadot API object and use it to connect to a node using ApiPromise.

// Required imports
const { ApiPromise, WsProvider } = require('@polkadot/api');
const { typesBundleForPolkadot } = require('@crustio/type-definitions');
async function main () {
// Initialise the provider to connect to the local node
const provider = new WsProvider('ws://');
// Create the API and wait until ready
const api = await ApiPromise.create({ provider, typesBundle: typesBundleForPolkadot });
// Retrieve the chain & node information information via rpc calls
const [chain, nodeName, nodeVersion] = await Promise.all([
console.log(`You are connected to chain ${chain} using ${nodeName} v${nodeVersion}`);
main().catch(console.error).finally(() => process.exit());