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Quickstart

This guide walks you through your first API call: fetching the token balances of Vitalik’s wallet on Ethereum.

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Prerequisites

  • A 0xRadar API key (get one here)
  • curl, Python 3.8+, or Node.js 18+

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Step 1: Pick a wallet

We’ll use a well-known address for this example: 
0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045

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Step 2: Make the request

curl -X GET "https://api.0xradar.app/v1/wallet/0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045/balances?chain=ethereum&max_tokens=5" \
  -H "X-API-Key: YOUR_API_KEY"

import httpx

url = "https://api.0xradar.app/v1/wallet/0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045/balances"
params = {"chain": "ethereum", "max_tokens": 5}
headers = {"X-API-Key": "YOUR_API_KEY"}

response = httpx.get(url, params=params, headers=headers)
data = response.json()
print(data)

const url = new URL("https://api.0xradar.app/v1/wallet/0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045/balances");
url.searchParams.set("chain", "ethereum");
url.searchParams.set("max_tokens", "5");

const res = await fetch(url, {
  headers: { "X-API-Key": "YOUR_API_KEY" }
});
const data = await res.json();
console.log(data);

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Step 3: Multi-chain portfolio

curl -H "X-API-Key: YOUR_API_KEY" \
  "https://api.0xradar.app/v1/wallet/0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045/portfolio?chains=ethereum,base,arbitrum"

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What’s next?