Connect to Base

Network details for Base Mainnet and Base Sepolia: RPC endpoints, chain IDs, and block explorers.

Base is a standard EVM chain, so any Ethereum tool, wallet, or library works unchanged. Just point it at the network details below.

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Network Details

	Base Mainnet	Base Sepolia (testnet)
RPC endpoint	https://mainnet.base.org	https://sepolia.base.org
Transaction submission	https://mainnet-sequencer.base.org	https://sepolia-sequencer.base.org
Chain ID	8453	84532
Currency	ETH	ETH
Block explorer	basescan.org	sepolia.basescan.org

Use the transaction submission endpoint only to send transactions. Use the RPC endpoint for all other requests.

The public RPC endpoints are free, rate limited, and best effort. They are not suitable for production apps.

https://mainnet.base.org and https://sepolia.base.org do not serve the debug, trace, or txpool namespaces. Base Mainnet removed these namespaces and lowered the read-request rate limit on October 8, 2026 (status notice).

If your app uses these namespaces or needs higher throughput, use a dedicated RPC provider from the Builder Stack.

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Next Steps

Get Funds

Fund an address to start transacting.

Make a Transaction

Send your first transaction on Base.