Free Zircuit RPC Endpoint
Chain ID 48900 · ETH · multi-region with automatic failover
Zircuit (Chain ID 48900) is a zk-rollup with sequencer-level security screening. NodeFlare runs a dedicated Zircuit node — few independent providers serve this chain.
Public endpoint — no API key
HTTPS
https://rpc.nodeflare.app/zircuit/publicNeed higher limits? Use a keyed endpoint https://rpc.nodeflare.app/zircuit/v1/{YOUR_KEY} — get a free key →
Connect to Zircuit
curl -s -X POST https://rpc.nodeflare.app/zircuit/public \
-H 'content-type: application/json' \
-d '{"jsonrpc":"2.0","id":1,"method":"eth_blockNumber","params":[]}'import { ethers } from "ethers";
const provider = new ethers.JsonRpcProvider(
"https://rpc.nodeflare.app/zircuit/public"
);
const block = await provider.getBlockNumber();import { createPublicClient, http } from "viem";
const client = createPublicClient({
transport: http("https://rpc.nodeflare.app/zircuit/public"),
});
const block = await client.getBlockNumber();from web3 import Web3
w3 = Web3(Web3.HTTPProvider(
"https://rpc.nodeflare.app/zircuit/public"
))
print(w3.eth.block_number)Add Zircuit to your wallet
Network details for MetaMask, Rabby, or any EVM wallet — Zircuit chain ID 48900 (0xbf04).
| Network name | Zircuit |
| RPC URL | https://rpc.nodeflare.app/zircuit/public |
| Chain ID | 48900 |
| Currency symbol | ETH |
| Block explorer | https://explorer.zircuit.com |
Built for Zircuit
Early DeFi and security-conscious apps building on Zircuit. Every request routes to the nearest healthy node, with automatic failover and no per-request throttling — the gaps public endpoints leave.
Dedicated Zircuit RPC node — your own path, not a shared pool
NodeFlare runs its own dedicated Zircuit node on bare-metal — not a reseller of Alchemy or Infura, and not a shared free-for-all pool. A free or paid key gives you a dedicated endpoint path with your own rate limits, no per-request throttling, and full access to heavy methods (eth_getLogs, trace_*, debug_*) — your own Zircuit RPC without running the node yourself.
Zircuit RPC — FAQ
What is Zircuit's chain ID?
Zircuit's chain ID is 48900 (hex 0xbf04). Its native currency is ETH and its block explorer is explorer.zircuit.com. You can connect with NodeFlare's free public RPC at https://rpc.nodeflare.app/zircuit/public — no API key required.
How do I add Zircuit to MetaMask?
In MetaMask, open the network menu → "Add a network" → "Add a network manually", then enter — Network name: Zircuit; New RPC URL: https://rpc.nodeflare.app/zircuit/public; Chain ID: 48900; Currency symbol: ETH; Block explorer URL: https://explorer.zircuit.com. Save, then switch to Zircuit. The endpoint is free and needs no account.
What is the Zircuit RPC URL?
NodeFlare's public Zircuit RPC URL is https://rpc.nodeflare.app/zircuit/public over HTTPS. No API key is required for the public endpoint.
Is the Zircuit RPC free?
Yes. The public Zircuit endpoint is free with no sign-up. A free API key unlocks higher rate limits, heavy methods, and a dedicated path — 2,000,000 compute units per month, no credit card.
What are the Zircuit RPC rate limits?
The public endpoint is limited to 2 requests/second per IP. A free key gives 10 requests/second; paid plans scale to 500 req/s. Every plan includes all 22 supported chains.
Is NodeFlare a good Zircuit RPC provider?
NodeFlare is an independent Zircuit RPC provider that runs its own nodes — not a reseller or aggregator of third-party backends. The public endpoint is free with no sign-up; a free API key adds higher rate limits, and heavy methods (eth_getLogs, trace_*, debug_*) — 2,000,000 compute units per month, no credit card.
Is there a dedicated Zircuit RPC node?
Yes. NodeFlare runs its own dedicated Zircuit node(s), and every request is routed to the nearest healthy node with automatic failover. A free or paid key gives you a dedicated endpoint path with your own rate limits and full access to archive methods like eth_getLogs and debug_traceTransaction.
Go deeper
- Full Zircuit API reference → — supported methods, WebSocket, regions
- Rate limits & compute-unit costs → — what each method costs against your quota
- Pay per request with x402 → — Zircuit calls in USDC from $0.001, no account:
POST /zircuit/x402 - RPC for trading bots → and indexers → — low-latency, eth_getLogs-heavy workloads
- Screen a Zircuit token for scams → — ownership, honeypot check, holder concentration → one risk score
- Onchain tools for AI agents → — token-safety, wallet intelligence and RPC over MCP / x402
Build on Zircuit with a free key
Higher limits, a dedicated path, and automatic failover — every chain included. No credit card.
Get your free API key →Zircuit RPC methods
Per-method docs for Zircuit — parameters, compute-unit cost, and copy-paste examples.