How to Add Base Mainnet to Your Wallet or dApp

As the Ethereum ecosystem continues to grow, Layer-2 scaling solutions like Base have become essential for building fast and cost-efficient decentralized applications. Developed by Coinbase, Base offers full EVM compatibility, low fees, and seamless integration with existing Ethereum tooling.

This guide provides a complete walkthrough for connecting to Base Mainnet using NOWNodes as your remote RPC infrastructure, making it easy to add Base support to wallets, Web3 applications, or backend services.

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Why Connect to Base

Base is a secure, high-throughput Layer-2 network that inherits Ethereum's decentralization while significantly reducing transaction costs. It supports smart contracts, tokens, and the full Ethereum toolchain, making it ideal for developers and advanced users alike.

Key advantages of Base include:

• Low transaction fees suitable for consumer applications

• Native support for Ethereum tooling and smart contracts

• Backed by Coinbase with strong user onboarding potential

• Expanding ecosystem of dApps and DeFi protocols

• Full EVM compatibility

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Using NOWNodes as an RPC Provider

Running your own Base node requires substantial resources, including storage, compute power, and bandwidth. NOWNodes eliminates that complexity by offering instant access to shared or dedicated RPC endpoints for Base and over 100 other networks.

Benefits of NOWNodes:

• Reliable infrastructure with >99.95% uptime

• Shared and dedicated nodes available

• Supports 110+ blockchains

• Easy integration using a single API key

• No hardware or server management required

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Step-by-Step Guide: Connect to Base Mainnet

Step 1: Obtain Your RPC Endpoint

1. Create an account at nownodes.io

2. After registering, retrieve your API key from the dashboard

3. Use the following RPC URL format:

https://base.nownodes.io/YOUR_API_KEY

Replace YOUR_API_KEY with the actual API key provided by NOWNodes.

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Step 2: Configure Base Network Parameters

To add Base to MetaMask, your dApp, or any Web3-compatible client, use the following network settings:

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Step 3: Test the RPC Endpoint

You can verify your setup by making a JSON-RPC request using curl or any HTTP client. For example, you can use net_listening method:

Request body:

{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "net_listening"
}

Expected response:

{
  "jsonrpc": "2.0",
  "id": 1,
  "result": true
}

If you receive a true response, your RPC connection to Base is working correctly.

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Step 4: Use Base in Your Application or Wallet

Once connected, you can begin interacting with the Base Mainnet through your wallet or dApp. You can:

• Send and receive transactions

• Deploy and interact with smart contracts

• Query account balances, token metadata, and gas prices

NOWNodes makes this possible with no infrastructure overhead and a consistent API across chains.

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Why Choose NOWNodes for Base Access

NOWNodes provides a production-grade solution for developers and teams building on Base.

Key features include:

• High-availability endpoints for critical applications

• Horizontal scalability for dApps with growing traffic

• Multi-chain integration support

• API key-based access control

• Seamless onboarding experience

Whether you are building a wallet extension, a DeFi protocol, or an analytics dashboard, NOWNodes allows you to focus on product development without worrying about backend node management.

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Conclusion

Base is emerging as a powerful Layer-2 network that combines speed, cost-efficiency, and full Ethereum compatibility. By using NOWNodes as your RPC provider, you can connect to Base quickly and reliably without the burden of operating your own infrastructure.

This guide outlined the exact steps and parameters needed to configure Base Mainnet access in your wallet or Web3 application. For teams deploying production-level systems, it's advisable to monitor performance metrics and consider upgrading to dedicated RPC nodes for improved reliability and throughput.

If you're ready to start building on Base, NOWNodes provides the tools you need to get started immediately.