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Trading bots, perps and DeFi protocols hammer Arbitrum One. Get a dedicated endpoint with WebSocket streams and predictable request-unit billing.
latency
Quick connect
Drop this URL into your RPC client, HTTP library or wallet config. No SDK install required.
https://eu.endpoints.matrixed.link/rpc/arbitrum?auth=YOUR_API_KEY wss://eu.endpoints.matrixed.link/ws/arbitrum?auth=YOUR_API_KEY
Replace YOUR_API_KEY with your API key.
Get a free key →
Connect
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://eu.endpoints.matrixed.link/rpc/arbitrum?auth=YOUR_API_KEY"
);
const block = await provider.getBlockNumber();About Arbitrum
Connect your dApp, bot, or protocol to Arbitrum One with BoltRPC. Transparent, published request-unit pricing means predictable costs as your trading infrastructure scales.
| Chain ID | 42161 |
| Protocol | Optimistic Rollup (Nitro) on ETH |
| Block time | ~0.25 s |
| Native token | ETH |
| Finality | Ethereum L1 finality ~7 days (challenge period) |
| EVM compatible | Yes |
Arbitrum One is Ethereum’s largest L2 by total value locked. It exists to run DeFi at Ethereum security without Ethereum mainnet fees. GMX, Uniswap V3, Aave, Camelot and hundreds of high-frequency trading protocols operate here. Arbitrum Nitro’s sub-second block production means the chain processes blocks faster than most public RPC providers can keep up. MEV bots, arbitrage systems and liquidation bots are among the heaviest Arbitrum RPC consumers, all of them running concurrent requests at sustained volume.
Why BoltRPC
BoltRPC offers fixed monthly plans starting at $49. Visit boltrpc.io/pricing for full plan details. DEX event monitoring, liquidation log scanning, and batch receipt fetching all run on predictable, published per-method request-unit pricing, with no hidden multipliers.
At Nitro's block speed, your application can receive new blocks faster than a congested or rate-limited public endpoint can serve them. BoltRPC's infrastructure is built for high-frequency polling and concurrent request patterns that Arbitrum DeFi requires.
Arbitrum One is one of the most active MEV environments in Web3. Searchers, arbitrage bots, and sandwich traders all run sustained concurrent request loads against their RPC. Public Arbitrum endpoints cannot handle this volume.
Arbitrum posts transaction batches to Ethereum at intervals. Trading systems that need to track L1 batch inclusion can subscribe via WebSocket to monitor sequencer output in real time.
BoltRPC supports the complete Arbitrum Nitro JSON-RPC specification including all eth_* methods and Arbitrum-specific methods.
ApeChain is also built on Arbitrum AnyTrust. If you are building across the Arbitrum ecosystem, BoltRPC supports both Arbitrum One and ApeChain from one API key.
Methods
Every standard Arbitrum method you'd expect. Archive-only methods are available on request for qualifying plans.
standard
6 eth_call eth_estimateGas eth_sendRawTransaction eth_getBlockByNumber eth_getLogs eth_getTransactionReceipt FAQ
Common questions about connecting to Arbitrum over BoltRPC.
Get started
One endpoint format, 20+ networks, no SDK. Drop our URL into the client you already use and your integration is done.
No credit card required. · 14-day trial on any tier.