Ethereum RPC Endpoints, API & Dedicated Nodes | OnFinality

Ethereum RPC Endpoints & Dedicated Nodes

Ethereum is the leading smart contract blockchain, powering decentralized applications across DeFi, NFTs, gaming, and more. To interact with the Ethereum network, applications use Remote Procedure Call (RPC) endpoints to read blockchain data, submit transactions, and communicate with smart contracts. OnFinality provides managed Ethereum RPC endpoints and dedicated node hosting, giving developers reliable access to the Ethereum mainnet without the overhead of running their own infrastructure.

What is Ethereum RPC?

Ethereum RPC is a communication protocol that allows external applications to query the Ethereum blockchain and send transactions. It uses the JSON-RPC specification, which defines a set of methods for interacting with execution clients. Common use cases include:

• Reading account balances and transaction history
• Submitting transactions to the network
• Interacting with smart contracts
• Querying blockchain state and event logs

Developers typically connect to an RPC endpoint via HTTP or WebSocket. Public endpoints are available but often have rate limits and no guarantees. OnFinality offers authenticated endpoints with clearer usage limits and request analytics, suitable for production workloads.

Ethereum RPC on OnFinality

OnFinality supports Ethereum mainnet through managed API endpoints and dedicated nodes. Key features include:

• EVM JSON-RPC protocol – Compatible with all Ethereum tools and libraries (Web3.js, ethers.js, etc.)
• HTTP and WebSocket transport – Choose the transport that fits your application
• Dedicated nodes – Deploy a private node for higher throughput, lower latency, and full control
• Request analytics – Monitor usage, errors, and limits through the OnFinality dashboard
• Production-ready – Designed for dApps, wallets, DeFi products, analytics tools, games, bots, and backend services

How to Connect to Ethereum with OnFinality

1. Create or sign in to your OnFinality account.
2. Select Ethereum from the supported networks list.
3. Create an API endpoint or deploy a dedicated node.
4. Test the endpoint using the example method eth_blockNumber.
5. Monitor request usage and errors before moving critical traffic.

When to Use Dedicated Nodes

For applications with high throughput requirements, dedicated nodes provide:

• Guaranteed resources – No sharing with other users
• Custom configuration – Choose client software and sync mode
• Enhanced privacy – No exposure to other API consumers
• Scalability – Handle spikes in traffic without rate limiting

Archive and Trace Access

If your workload requires historical state access (archive) or detailed transaction traces, contact OnFinality to discuss options. Ethereum archive nodes enable queries for any past block, which is essential for analytics and compliance tools.

Conclusion

OnFinality simplifies Ethereum RPC access and node management, letting developers focus on building rather than infrastructure. Whether you need a simple API key for a prototype or a dedicated node for a high-traffic application, OnFinality provides the tools and support to scale your Web3 project.

Choosing an Ethereum RPC API Provider

If you are comparing the best Ethereum RPC API for Web3 apps, use this Ethereum network page as the endpoint and infrastructure planning. It is designed for teams that need Ethereum mainnet RPC access, request visibility, archive or trace options, and a path from shared API endpoints to dedicated nodes.

For a buying checklist, see Best Ethereum RPC API for Web3 apps. If you are comparing broader multi-chain infrastructure, start with Best RPC provider for Web3 projects.