Base RPC Endpoints & API Access | OnFinality

Base is a secure, low-cost, builder-friendly Ethereum L2 built.

Connect to Base in seconds with OnFinality RPC endpoints, request analytics, scalable rate limits, and 99.99% uptime for production Web3 apps.

Base is a secure, low-cost, builder-friendly Ethereum L2 built.

Create RPC Endpoint

Base RPC Endpoint

The below example uses the public API endpoint*. This endpoint is only suitable for testing. To avoid rate limiting and service interruption, sign up now to get your own API key.

* The public endpoint is rate limited

RPC API Service

RPC API Features

ArchiveTrace

RPC Regions

Hong KongFranceN.Virginia

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

Create or sign in to your OnFinality account.
Select Base from the supported networks list.
Create an API endpoint (or deploy a dedicated node if supported).
Test the endpoint using eth_blockNumber.
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.