Base RPC URL & Endpoint for Mainnet
An Ethereum Layer 2 built on the OP Stack for low-cost, high-throughput dApps, wallets, and onchain users.
Connect to Base Mainnet with https://base.api.onfinality.io/public and chain ID 8453. Use the public HTTPS RPC for connection checks, then create an authenticated OnFinality endpoint for your wallet, consumer app or DeFi backend. For testing with test ETH, use Base Sepolia and chain ID 84532.
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Public endpoint rate limit: 5 req/sec
curl -H 'Content-Type: application/json' -d '{"id":1,"jsonrpc":"2.0","method":"eth_blockNumber"}' 'https://base.api.onfinality.io/public'https://base.api.onfinality.io/publicGo to Growth Plan
- High Performance
- Powerful RPC Analytics
- Up to 500 rps
- No daily response limit
- Priority Support
- Decentralized Servers
Base RPC Service Details
Base Public RPC vs OnFinality Base RPC
Base's official public RPC is useful for testing and lightweight development. For production applications that need higher request limits, archive data, trace/debug access, analytics, or dedicated infrastructure, developers can use a managed Base RPC provider such as OnFinality.
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