NOD3 is the on-chain API gateway for Base blockchain. Get token balances, transaction data, and contract state in milliseconds — with caching, rate limiting, and zero infrastructure to manage.
# Get token balances for any Base address
curl https://api.nod3.xyz/v1/base/balance/0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045 \
-H "x-api-key: bk_nod3_your_key_here"
# Response: instant, cached, zero infrastructure
{
"address": "0xd8dA6BF2...96045",
"ethBalance": "4.2190",
"cached": true,
"tokens": [
/* USDC, cbETH, and 12 more */
]
}
Why NOD3
Not another generic JSON-RPC proxy. NOD3 is designed specifically for developers building on Base — with caching, analytics, and developer tools baked in.
Median response under 50ms. Edge-cached globally so your users get data instantly, no matter where they are.
Automatic multi-layer caching reduces Base RPC calls by up to 80%. Token metadata cached for hours. Balances cached for seconds.
Purpose-built for Base blockchain. Native support for ERC-20 tokens, NFTs, contract reads, and Base-specific opcodes.
Start free — 10,000 requests per month on us. Scale up when you need to. No hidden fees, no node infrastructure to manage.
Per-key rate limits prevent abuse and unexpected bills. Intelligent bursting lets your app handle spikes gracefully.
Track every request in your dashboard. Latency histograms, cache hit rates, top endpoints — everything visible in real time.
API Endpoints
/v1/base/balance/:addressETH + ERC-20 balances
/v1/base/token/:contractToken metadata
/v1/base/tx/:hashTransaction details
/v1/base/block/latestLatest block data
/v1/base/callContract read calls
/v1/base/logsEvent log queries
Pricing
Start free. Scale when you need to. Pay only for what you use.
Free
For side projects and exploration
Starter
For apps in production
Pro
For scaling applications
Pay with card or USDC on Base. All plans include 24h rollover credits.
Create your free API key, copy one cURL command, and you're querying live Base blockchain data. No wallet setup. No node sync. No waiting.
Get your free API key