All posts
3 July 2026·4 min read·NodeFlare Team

Free Unichain RPC Endpoint

Free Unichain RPC endpoint (Chain ID 130) — no API key required. 1-second blocks, multi-region failover, 2M compute units/month free. One of the few independent Unichain providers.

Unichain is Uniswap Labs' OP-Stack L2 — a chain built specifically as a home for DeFi liquidity, with 1-second blocks and Flashblocks pre-confirmations. Few independent RPC providers serve it yet. NodeFlare runs a dedicated Unichain node, so you can start building in under a minute.

Unichain RPC URLs

Public endpoint — no API key:

https://rpc.nodeflare.app/unichain/public

Keyed endpoint (free account — higher limits, heavy methods):

https://rpc.nodeflare.app/unichain/v1/{YOUR_KEY}

Get your free key → — no credit card.

Quick start

Terminal
curl https://rpc.nodeflare.app/unichain/public \
  -X POST \
  -H "Content-Type: application/json" \
  -d '{"jsonrpc":"2.0","method":"eth_blockNumber","params":[],"id":1}'
JavaScript
import { ethers } from 'ethers';

const provider = new ethers.JsonRpcProvider(
  'https://rpc.nodeflare.app/unichain/public'
);
console.log('Unichain block:', await provider.getBlockNumber());

Unichain at a glance

ParameterValue
Chain ID130 (0x82)
CurrencyETH
TypeOP-Stack rollup (Superchain)
Block time~1 s (Flashblocks ~250 ms pre-confirmations)
Exploreruniscan.xyz

Because Unichain runs 1-second blocks, block-range math from Ethereum tooling is off by 12× — a day is ~86,400 blocks. Our per-method reference covers chain-specific notes like this for every JSON-RPC method.

Free tier

  • 2,000,000 compute units/month — no credit card
  • eth_getLogs (75 CU), trace_*/debug_* (100 CU) included on free
  • Every supported chain under one key — Unichain, Ethereum, Base, Polygon, Arbitrum and more
  • Multi-region routing with automatic failover

Add Unichain to MetaMask

FieldValue
Network nameUnichain
RPC URLhttps://rpc.nodeflare.app/unichain/public
Chain ID130
Currency symbolETH
Block explorerhttps://uniscan.xyz

FAQ

What is the Unichain RPC URL? https://rpc.nodeflare.app/unichain/public — no API key required, rate-limited per IP. A free key unlocks higher limits and heavy methods.

Is the Unichain RPC free? Yes. The public endpoint is free without sign-up; a free account adds 2M CU/month and a dedicated keyed path.

Does eth_getLogs work on Unichain? Yes — with a free API key. As Uniswap's home chain, swap/pool event density is high: use address + topic filters and remember each call costs 75 CU.

Building on Unichain? Get your free NodeFlare key → — covers Unichain plus every supported chain.