What is the Unichain RPC URL?

The Unichain Mainnet RPC URL with BoltRPC is https://endpoints.boltrpc.io/rpc/YOUR_API_KEY/unichain. Replace YOUR_API_KEY with your API key from dashboard.boltrpc.io. The chain ID is 130.

How do I add Unichain to MetaMask?

Open MetaMask, go to Settings, then Networks, then Add Network, and enter: Network Name: BoltRPC Unichain, RPC URL: https://endpoints.boltrpc.io/rpc/YOUR_API_KEY/unichain, Chain ID: 130, Currency Symbol: ETH, Block Explorer: https://uniscan.xyz.

Is Unichain EVM compatible?

Yes. Unichain is built on the OP Stack and is EVM equivalent. Solidity contracts deploy without modification and standard Ethereum tooling works out of the box. Only the RPC URL and Chain ID (130) change.

Who is behind Unichain?

Unichain was launched by Uniswap Labs as a Layer 2 on the OP Stack and a member of the Optimism Superchain. It is designed as the home venue for Uniswap v4 liquidity.

What are Flashblocks?

Flashblocks subdivide Unichain's one-second blocks into faster pre-confirmation intervals, giving traders sub-second effective confirmation before the full block lands.

What gas token does Unichain use?

Unichain uses ETH for gas, like Ethereum and the other OP Stack chains. There is no separate network token for paying fees.

Does BoltRPC support WebSocket for Unichain?

Yes. BoltRPC provides WebSocket endpoints for Unichain at wss://endpoints.boltrpc.io/ws/YOUR_API_KEY/unichain. Use WebSocket for real-time event streaming: new blocks, pending transactions, swap events.

Unichain RPC Endpoint

Unichain is Uniswap's L2, built as the home for v4 liquidity with sub-second effective confirmation. A dedicated endpoint keeps your quotes and fills current.

chain id · 130JSON-RPC 2.0WebSocketDebug

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LIVE LATENCY

59ms

LIVE

gateway round-trip · sampled every second

IN PRODUCTION AT Chainlink

Your endpoint, ready in one line.

Drop this URL into your RPC client, HTTP library or wallet config. No SDK install required.

HTTPS

https://endpoints.boltrpc.io/rpc/YOUR_API_KEY/unichain

WEBSOCKET

wss://endpoints.boltrpc.io/ws/YOUR_API_KEY/unichain

Replace YOUR_API_KEY with your API key. Get a free key →

Pick your stack.

Copy-paste examples for the libraries you already use. Swap the API key, hit run.

import { ethers } from "ethers";

const provider = new ethers.JsonRpcProvider(
  "https://endpoints.boltrpc.io/rpc/YOUR_API_KEY/unichain"
);

const blockNumber = await provider.getBlockNumber();
console.log("Latest block:", blockNumber);

import { createPublicClient, http } from "viem";
import { unichain } from "viem/chains";

const client = createPublicClient({
  chain: unichain,
  transport: http("https://endpoints.boltrpc.io/rpc/YOUR_API_KEY/unichain"),
});

curl https://endpoints.boltrpc.io/rpc/YOUR_API_KEY/unichain \
  -X POST \
  -H "Content-Type: application/json" \
  --data '{"jsonrpc":"2.0","method":"eth_blockNumber","params":[],"id":1}'

Connect your dApp, bot, or protocol to Unichain Mainnet with BoltRPC. Unichain is the Layer 2 built by Uniswap Labs as the home base for Uniswap liquidity, and predictable request-unit pricing keeps your RPC costs flat while your strategies read the busiest DEX ecosystem in crypto.

Chain at a Glance


Chain ID	130
Protocol	Optimistic rollup on the OP Stack (Optimism Superchain)
Block time	~1 second (sub-second Flashblocks for faster confirmation)
Gas token	ETH
Settlement	Ethereum mainnet
EVM compatible	Yes (EVM equivalent)

What Unichain is Built For

Unichain is what happens when the largest DEX builds its own chain: an OP Stack rollup launched by Uniswap Labs in 2025, designed to be the venue where Uniswap v4 liquidity concentrates. Its headline feature is speed of confirmation, one-second blocks subdivided by Flashblocks, giving traders sub-second effective confirmation, plus a verifiable block-building pipeline aimed at fairer transaction ordering. As a Superchain member it interoperates with Base, OP Mainnet and Ink over standard bridges. For developers it is EVM equivalent: ethers.js, viem, Foundry and Hardhat work unchanged. The workload is DEX-shaped from day one, quotes, swaps, routing and MEV, the request pattern where public endpoints rate-limit first.

Common Use Cases on Unichain

Routing and quoting engines Aggregators and wallets quote against Unichain pools on every user input. That is high-frequency eth_call traffic with hard latency budgets, the quote is stale before it renders if the RPC is slow.

Market makers and arbitrage Liquidity concentrated on one venue means the arbitrage happens against everywhere else. MEV-sensitive workloads on Unichain compete in the Flashblock window, where the RPC round-trip is a direct cost.

LP management and analytics v4 positions with hooks need continuous monitoring: fees earned, range status, impermanent loss. Dashboards poll position state per user, and an eth_getLogs pipeline backfills history.

Cross-Superchain strategies Protocols and routers spanning Unichain, Base and OP Mainnet need consistent RPC behavior everywhere. One provider with one URL pattern per chain keeps multichain infrastructure simple.

Built for teams that ship on Unichain.

Built for DEX workloads

Quotes, routing and position management on Unichain are continuous eth_call traffic against pool contracts. A dedicated endpoint keeps quote latency flat when volatility spikes and every router recomputes at once.

Sub-second confirmations need sub-second reads

Flashblocks give traders effective confirmation in a fraction of a second, worthless if your RPC provider adds that time back. BoltRPC's gateway round-trip is measured live and published on this page.

Debug methods included

debug_* methods are available on Unichain for tracing reverted swaps and hook interactions without running your own node.

WebSocket streaming included

Subscribe to new blocks, pending transactions and swap events over WebSocket at no extra charge. Streaming fills and pool events beats polling on both freshness and request count.

The Superchain from one provider

BoltRPC serves Unichain alongside Base, OP Mainnet, Ink and 20+ other networks behind one dashboard and one key pattern. Cross-chain routing logic talks to every venue through the same provider.

Full JSON-RPC coverage.

Every standard Unichain method you would expect. Archive-only methods are available on request for qualifying plans.

STANDARD5

eth_calleth_getLogseth_sendRawTransactioneth_getTransactionReceiptdebug_traceTransaction

Unichain, explained.

Common questions about connecting to Unichain over BoltRPC.

Ask a question →Read the docs

: The Unichain Mainnet RPC URL with BoltRPC is https://endpoints.boltrpc.io/rpc/YOUR_API_KEY/unichain. Replace YOUR_API_KEY with your API key from dashboard.boltrpc.io. The chain ID is 130.
: Open MetaMask, go to Settings, then Networks, then Add Network, and enter: Network Name: BoltRPC Unichain, RPC URL: https://endpoints.boltrpc.io/rpc/YOUR_API_KEY/unichain, Chain ID: 130, Currency Symbol: ETH, Block Explorer: https://uniscan.xyz.
: Yes. Unichain is built on the OP Stack and is EVM equivalent. Solidity contracts deploy without modification, and standard Ethereum tooling, ethers.js, viem, Foundry, Hardhat, MetaMask, works out of the box. Only the RPC URL and Chain ID (130) change.
: Unichain was launched by Uniswap Labs as a Layer 2 on the OP Stack and a member of the Optimism Superchain. It is designed as the home venue for Uniswap v4 liquidity.
: Flashblocks subdivide Unichain's one-second blocks into faster pre-confirmation intervals, giving traders sub-second effective confirmation of their transactions before the full block lands.
: Unichain uses ETH for gas, like Ethereum and the other OP Stack chains. There is no separate network token for paying fees.
: Yes. BoltRPC provides WebSocket endpoints for Unichain at wss://endpoints.boltrpc.io/ws/YOUR_API_KEY/unichain. Use WebSocket when you need real-time event streaming: new blocks, pending transactions, swap events.

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An API key in under 60 seconds, Unichain plus 34 other chains, and a team that answers when you write.

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