Developers

Start building in minutes

Pick your language, grab an API key, and make your first RPC call. No node setup. No configuration files.

Quick start

1Install the SDK

npm install @kubernodes/sdk

2Initialize with your key

import { KuberNodes } from '@kubernodes/sdk';
const kn = new KuberNodes('YOUR_API_KEY');

3Make your first call

const block = await kn.eth.blockNumber();
console.log(block); // 20421762

Official client libraries — type-safe, documented, and actively maintained.

JavaScript

@kubernodes/sdk

Python

kubernodes

github.com/kubernodes/sdk-go

Rust

kubernodes

Java

com.kubernodes:sdk

Ruby

kubernodes

Ready-to-run examples you can copy, fork, and extend.

Call eth_blockNumber and decode the hex response into a decimal block number.

Stream ERC-20 Transfer events in real time using WebSocket subscriptions.

Use archive node access to query wallet balances at any past block height.

Build a real-time gas price dashboard across Ethereum, Polygon, and Arbitrum.

All SDKs, the CLI, and example apps are open source. File issues, submit PRs, or fork and adapt freely.

Manage API keys, run RPC calls, and inspect chain state directly from your terminal.

npm install -g @kubernodes/cli