20B+ API requests served monthly — built to handle any scale.
High-Performance Arbitrum RPC Node & API Access for Web3 Developers
Deploy faster on Arbitrum with ultra-reliable RPC nodes, developer-friendly web3 APIs, and powerful blockchain data tools — built for scale with enterprise-grade infrastructure.
Arbitrum RPCMainnet · Testnet
Your endpoint
const ARBITRUM_RPC_URL = "https://<your-endpoint>";
One call away
const block = await client.getBlockNumber();
// same JSON-RPC, on nodes we own and run
HTTPSWebSocket99.99% uptime24/7 support
Proven Infrastructure for Arbitrum Builders
Engineered for performance, scale, and reliability — trusted by leading enterprises and top onchain projects.
99.99% Uptime SLA means you only pay when we’re online.
Super fast API response times compared to competitors.
24/7 Support via our expert team via TG and Discord.
Why Spectrum RPC is the Backbone of Top Arbitrum Projects
Reliable Arbitrum Infrastructure
Always-on access to Arbitrum nodes, with 99.99% uptime and real-time redundancy. Never miss a block, notification, or transaction.
Built for Developers
Native support for Arbitrum RPC methods, JSON-RPC, and all your favourite libraries. Get started in Python, JavaScript, or even directly via curl.
Instant Arbitrum RPC Endpoint
Get production-ready RPC endpoints using simple HTTP and WebSocket URLs. Connect your dApp, smart contract, or Web3 app instantly.
Scalable from MVP to Millions
From hackathons to unicorns — our infrastructure grows with you. Scale your Arbitrum requests from hundreds to thousands per second without changing providers.
Zero Setup. Full Power. Ready to Scale.
Spectrum RPC eliminates infrastructure complexity. Just generate your Arbitrum RPC endpoints, plug them into your app, and go.
No Devops
Skip the hassle of managing infrastructure. Spectrum RPC gives you production-ready endpoints — no servers, no deployments, just plug-and-play access for developers.
No syncing or node maintenance
Forget waiting hours for nodes to sync or troubleshooting crashes. We handle uptime, versioning, and updates so your app stays live and responsive.
No rate-limit surprises
Built to scale with your growth. Our infrastructure supports thousands of requests per second with clear, transparent usage plans — no hidden throttling or slowdowns.
What we run for Arbitrum
The environments and node types we serve, and the plans each one is available on.
| Network | Tracing | Archive | Pruned | Free | Starter | Developer | Growth | Business | Enterprise | Custom |
|---|---|---|---|---|---|---|---|---|---|---|
| Arbitrum Testnet | ||||||||||
| Arbitrum Mainnet |
Getting started is as easy as:
- 01Create a free account
- 02Generate Arbitrum RPC endpoint
- 03Integrate it with your app
Frequently asked questions
Everything you need to know about building on Spectrum. Can't find an answer?
Talk to our teamRPC stands for Remote Procedure Call: a protocol enabling apps to interact with blockchain nodes securely via HTTP/WebSocket for balances, txs, and contracts. Read our blog post to learn more: What is an RPC? A Beginner's Guide.
Arbitrum is a suite of Ethereum scaling solutions that make it easy to build and use decentralized applications (read more). Spectrum ends patchwork infra: Launch on Arbitrum with secure bare-metal RPCs, then expand seamlessly to 200+ different blockchain networks via one user-friendly interface and 99.99% uptime.
Free plans include limited monthly API requests and access to public RPC endpoints. Paid plans unlock higher request volumes, private endpoints, better performance, and premium support. Check which tiers we support for Arbitrum on our website.
Yes, each plan comes with request-per-second limits and monthly quotas. You can view and upgrade your limits anytime on our website or in your account dashboard.
Spectrum provides a real-time analytics dashboard so you can track request volume, errors, latency, and more - helping you optimize your app's performance. Access your dashboard on our website.
You can reach out to our 24/7 support team by opening a ticket in your Spectrum dashboard, contacting us through our website or exploring our developer docs for detailed guides and troubleshooting help.
Spectrum supports a wide array of blockchain networks beyond Arbitrum, including Ethereum, Binance Smart Chain, Polygon, Solana, and many more. Check out our website for the full list of supported networks and endpoints.
Get started
Start building on Arbitrum
Create a free account, generate a Arbitrum endpoint, and ship against nodes we own and operate.
No credit card required · Free tier included