One JSON-RPC gateway for Tron, BNB Smart Chain, and opBNB — with the official @znd/sdk or plain fetch. Edge-routed across 7 regions, with a free tier that doesn't gate features behind a sales call.
Pulled from the same Prometheus that pages our on-call. Updated every 5 seconds.
No 14-product SKU sheet. Just the four things you actually call from your code.
One gateway, three live chains. Standard EVM methods on BSC and opBNB, plus eth_* compatibility on Tron — proxied to dedicated upstream nodes with rate-limited keys.
The full Tron HTTP API — /wallet/*, /walletsolidity/*, /trongrid endpoints — proxied through the same key. No separate auth, no separate domain.
Pick a region on key creation: us-east, us-west, eu-west, asia-southeast, sa-east, me-south, af-south. Latency is what your closest replica gives you.
Live /health endpoint, X-RateLimit-* and X-Monthly-* headers on every response. The same Prometheus signals our on-call sees, exposed to your code.
Three live mainnets, more on the roadmap. Archive node access on the Pro plan.
Use the official @znd/sdk for typed methods and BigInt-aware responses, or hit the gateway directly with curl / fetch / requests. The API key lives in the URL path — no headers, no signing.
// npm install @znd/sdk
import { ZNodeClient } from "@znd/sdk";
const client = new ZNodeClient({
apiKey: process.env.ZNODE_KEY!,
region: "us-east", // optional, default: "eu-west"
});
const block = await client.getBlockNumber();
const balance = await client.getBalance("0x742d35Cc...");
// Tron native (TRON-prefixed keys only)
const tronBlock = await client.tron_getNowBlock();Still curious? The docs go deep, or just email us at [email protected] — replies in under an hour during business days.
100K requests/month at 10 req/s on the free tier — every live chain, every region. No card, no sales call.