Base RPC Endpoints & API for Ethereum L2 Apps | OnFinality

Base RPC Endpoints on OnFinality

OnFinality provides managed API endpoints for Base, a secure, low-cost Ethereum Layer 2 built by Coinbase. Developers can use OnFinality to connect wallets, dApps, DeFi products, analytics tools, and backend services to Base without running their own node.

What is Base?

Base is an Ethereum L2 scaling solution built on the OP Stack. It offers EVM equivalence, fast block times, and low transaction fees while inheriting Ethereum's security. Base is incubated by Coinbase and aims to bring the next billion users onchain.

Why Use OnFinality for Base RPC?

OnFinality offers authenticated RPC endpoints with clear usage limits, request analytics, and a path to higher capacity. This is ideal for teams moving beyond lightweight testing into production workloads.

• Managed Infrastructure: No need to operate your own Base node.
• Archive & Trace Support: Access historical state and debug data where available.
• Observability: Monitor request usage, errors, and limits through the OnFinality dashboard.
• Scalable Plans: Start with shared endpoints and upgrade as your traffic grows.

How to Connect to Base with OnFinality

1. Create or sign in to your OnFinality account.
2. Select Base from the supported networks list.
3. Create an API endpoint (or deploy a dedicated node if supported).
4. Test the endpoint using eth_blockNumber.
5. Monitor usage before moving critical traffic.

Key Facts

• Network: Base Mainnet
• Chain ID: 8453
• Protocol: EVM JSON-RPC
• Transport: HTTP
• Advanced Access: Archive, Trace (plan-dependent)

Use Cases

• Wallets: Enable users to send transactions and check balances.
• dApps: Read contract state and submit user interactions.
• DeFi: Fetch price data, execute swaps, and monitor liquidity.
• Analytics: Index historical data for dashboards and reporting.
• Backend Services: Automate on-chain operations and event monitoring.

Comparison: Public vs OnFinality Base RPC

Public endpoints are suitable for quick tests, but authenticated OnFinality endpoints provide clearer limits, request visibility, and a path to higher-capacity infrastructure for production use.

When to Use Base Chain RPC

Choose OnFinality when your team needs Base mainnet endpoint access for Ethereum L2 dApps, wallets, bridge traffic, analytics jobs, backend services, and production monitoring workflows.

For testnet workflows, use Base Sepolia RPC. For setup and provider evaluation, read Base RPC endpoints guide.