Base RPC Endpoints, API & Dedicated Nodes

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

Chain ID8453

CurrencyETH

Connect to Base RPC endpoints for Ethereum L2 apps, wallets, DeFi, backend services, archive queries, and production node infrastructure.

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.

Example CURL

curl -H 'content-type:application/json' -d '{"id": 1, "jsonrpc": "2.0", "method": "eth_blockNumber"}' 'https://base.api.onfinality.io/public'

curl -H 'content-type:application/json' -d '{"id": 1, "jsonrpc": "2.0", "method": "eth_blockNumber"}' 'https://base.api.onfinality.io/public'

HTTPs

https://base.api.onfinality.io/public

https://base.api.onfinality.io/public

* The public endpoint is rate limited

RPC API Service

RPC API Features

ArchiveTrace

RPC Regions

Hong KongFranceN.Virginia

PRICING

Calculate Your Costs

Only pay for what you need.

Monthly Response Units

Million Standard Requests

0100M200M300M400M

Total Cost

$49/ month

Recommended Plan: GROWTH

Continue with this plan

Build on Base with OnFinality RPC endpoints for Ethereum L2 applications. Base is an OP Stack L2 incubated by Coinbase, and many teams use it for lower-cost EVM apps, wallets, DeFi products, consumer experiences, and backend services.

Base RPC use cases

Base RPC endpoints let applications read chain state, call contracts, submit signed transactions, query logs, and monitor receipts using familiar EVM tooling. The endpoint choice becomes more important when your app moves from a prototype to real user traffic.

Common workloads include:

Wallet and dApp reads for balances, tokens, and contract state.
DeFi or consumer apps that need reliable transaction status.
Backend services that query logs or coordinate user activity.
Analytics workflows that need historical chain data.

OnFinality Base RPC features

Network: Base Mainnet, Chain ID 8453
Protocol: EVM JSON-RPC
Transport: HTTP and WebSocket
Advanced access: Archive support available
Dedicated nodes: Dedicated node options for workloads that need isolated resources

What to test first

Start with eth_blockNumber, then check eth_call, transaction submission, receipt polling, log queries, wallet switching, and any backend jobs that may run during peak traffic.

Base mainnet and Sepolia testing

Use Base Sepolia for staging deployments and wallet flows, then repeat the same checks on Base mainnet before user traffic. Keep an eye on request limits, timeouts, and whether your team needs stronger monitoring or dedicated capacity.

Next steps: