Quicknode core workflow b

Skill jeremylongshore/claude-code-plugins-plus-skills/skills/.curated/quicknode-core-workflow-b

425 plugins, 2,810 skills, 200 agents for Claude Code. Open-source marketplace at tonsofskills.com with the ccpi CLI package manager.

Install

npx -y skills add jeremylongshore/claude-code-plugins-plus-skills --skill quicknode-core-workflow-b

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What its author says it does

Copied from the file, not written here

'Work with NFT and token APIs via QuickNode: metadata, balances, transfer history.

The file declares its own license as MIT. That is the author’s claim about this one file, and it is not the same thing as the license GitHub reports for the repository, which is listed with the other numbers below.

SKILL.md

3.7 KB, 930 tokens by cl100k_base, as published. Nobody here has run it

QuickNode Core Workflow B — NFT & Token APIs

Overview

Use QuickNode's NFT and Token APIs to fetch metadata, check balances, and track transfer history. These are QuickNode-specific add-on APIs beyond standard EVM RPC.

Prerequisites

Completed quicknode-core-workflow-a
Token and NFT add-ons enabled on your QuickNode endpoint

Instructions

Step 1: Get Token Balances (QuickNode SDK)

import { Core } from '@quicknode/sdk';

const core = new Core({ endpointUrl: process.env.QUICKNODE_ENDPOINT });

// Get all ERC-20 token balances for a wallet
const balances = await core.client.request({
  method: 'qn_getWalletTokenBalance',
  params: [{ wallet: '0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045' }],
});
for (const token of balances.result) {
  console.log(`${token.name} (${token.symbol}): ${token.quantity}`);
}

Step 2: Get NFT Metadata

const nfts = await core.client.request({
  method: 'qn_fetchNFTs',
  params: [{
    wallet: '0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045',
    contracts: ['0xBC4CA0EdA7647A8aB7C2061c2E118A18a936f13D'],  // BAYC
    page: 1,
    perPage: 10,
  }],
});
for (const nft of nfts.result.assets) {
  console.log(`${nft.name} — Token ID: ${nft.tokenId}`);
  console.log(`  Image: ${nft.imageUrl}`);
}

Step 3: Track ERC-20 Transfers

const transfers = await core.client.request({
  method: 'qn_getWalletTokenTransactions',
  params: [{
    address: '0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045',
    contract: '0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48',  // USDC
    page: 1,
    perPage: 10,
  }],
});
for (const tx of transfers.result.transfers) {
  console.log(`${tx.from} -> ${tx.to}: ${tx.value} at block ${tx.blockNumber}`);
}

Step 4: Standard ERC-20 Balance (No Add-on Required)

import { ethers } from 'ethers';

const provider = new ethers.JsonRpcProvider(process.env.QUICKNODE_ENDPOINT);
const erc20Abi = ['function balanceOf(address) view returns (uint256)', 'function decimals() view returns (uint8)', 'function symbol() view returns (string)'];
const token = new ethers.Contract('0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48', erc20Abi, provider);

const [balance, decimals, symbol] = await Promise.all([
  token.balanceOf('0xWalletAddress'),
  token.decimals(),
  token.symbol(),
]);
console.log(`${symbol} balance: ${ethers.formatUnits(balance, decimals)}`);

Output

ERC-20 token balances for any wallet
NFT metadata with images and attributes
Transfer history for token tracking
Direct contract reads for standard operations

Error Handling

Error	Cause	Solution
`Method not found: qn_*`	Add-on not enabled	Enable in QuickNode Dashboard
Empty results	No tokens at address	Verify address is correct
`call revert` on balanceOf	Wrong contract address	Verify ERC-20 contract

Resources

Next Steps

Handle errors: quicknode-common-errors