ReddRadar
Agent skill
quicknode-hello-world
QuickNode hello world — blockchain RPC and Web3 infrastructure integration. Use when working with QuickNode for blockchain development. Trigger with phrases like "quicknode hello world", "quicknode-hello-world", "blockchain RPC".
Install this agent skill to your Project
npx add-skill https://github.com/jeremylongshore/claude-code-plugins-plus-skills/tree/main/plugins/saas-packs/quicknode-pack/skills/quicknode-hello-world
SKILL.md
QuickNode Hello World
Overview
Make your first blockchain queries: get block number, check ETH balance, read a smart contract.
Prerequisites
- Completed
quicknode-install-authwith endpoint URL
Instructions
Step 1: Get Block Number
import { ethers } from 'ethers';
const provider = new ethers.JsonRpcProvider(process.env.QUICKNODE_ENDPOINT);
const blockNumber = await provider.getBlockNumber();
console.log(`Current block: ${blockNumber}`);
Step 2: Check ETH Balance
const address = '0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045'; // vitalik.eth
const balance = await provider.getBalance(address);
console.log(`Balance: ${ethers.formatEther(balance)} ETH`);
Step 3: Read Smart Contract (ERC-20 Token)
const usdcAddress = '0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48';
const abi = ['function balanceOf(address) view returns (uint256)', 'function decimals() view returns (uint8)'];
const usdc = new ethers.Contract(usdcAddress, abi, provider);
const decimals = await usdc.decimals();
const balance = await usdc.balanceOf(address);
console.log(`USDC balance: ${ethers.formatUnits(balance, decimals)}`);
Step 4: Get Transaction Receipt
const txHash = '0xabc...'; // Any transaction hash
const receipt = await provider.getTransactionReceipt(txHash);
console.log(`Status: ${receipt?.status === 1 ? 'Success' : 'Failed'}`);
console.log(`Gas used: ${receipt?.gasUsed.toString()}`);
Output
- Block number retrieved
- ETH balance checked
- ERC-20 contract read
- Transaction receipt fetched
Error Handling
| Error | Cause | Solution |
|---|---|---|
null receipt |
TX pending or invalid hash | Wait for confirmation or verify hash |
call revert exception |
Wrong ABI or address | Verify contract address and ABI |
| Balance is 0n | Address has no ETH | Try a known address like vitalik.eth |
Resources
Next Steps
Build transaction workflows: quicknode-core-workflow-a
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