Connect to Base, the secure and low-cost Ethereum Layer 2 built by Coinbase. Enjoy sub-cent transactions, Ethereum security, and seamless onboarding for millions of users.
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Technical characteristics and available endpoints
Mainnet & Testnet Support — Base Sepolia
Base is a secure, low-cost Ethereum Layer 2 built by Coinbase on the Optimism Stack (OP Stack). It brings Ethereum's security and decentralization with dramatically reduced transaction costs, making it ideal for consumer applications, DeFi, and onchain products reaching mainstream users.
https://rpc.crypto-chief.com/base/{YOUR_API_KEY}
wss://rpc.crypto-chief.com/base/ws/{YOUR_API_KEY}
Replace {YOUR_API_KEY} with your actual API key from the dashboard.
Access Coinbase's Ethereum Layer 2
A Base RPC node provides direct access to Coinbase's Layer 2 network, enabling applications to read state, send transactions, and interact with smart contracts at a fraction of Ethereum mainnet costs. Base inherits Ethereum's security while offering 2-second blocks and sub-cent transaction fees.
Base combines the best of both worlds: Ethereum's security and mature ecosystem with Layer 2 scalability and low costs. Backed by Coinbase, it offers seamless fiat onramps and potential access to Coinbase's 100M+ users, making it ideal for consumer-focused Web3 applications.
Base advantages:
Base is an optimistic rollup that executes transactions off Ethereum mainnet but posts transaction data back to L1 for security. This approach delivers massive cost savings while maintaining Ethereum's decentralization and security guarantees.
Architecture flow:
HTTPS RPC handles standard operations — balance queries, contract calls, transaction submission, and state reads with low latency.
WebSocket RPC enables real-time subscriptions for new blocks, pending transactions, event logs, and live price feeds — essential for DEX interfaces and trading applications.
Quick start for developers
Base supports all standard Ethereum JSON-RPC methods since it's fully EVM-equivalent:
const { ethers } = require('ethers');
const provider = new ethers.JsonRpcProvider('https://rpc.crypto-chief.com/base/YOUR_API_KEY');
// Verify we're on Base
const network = await provider.getNetwork();
console.log('Chain ID:', network.chainId); // Should be 8453
// Get ETH balance on Base
const balance = await provider.getBalance('0x...');
console.log('Base ETH:', ethers.formatEther(balance));
// Estimate gas for a transfer
const gasEstimate = await provider.estimateGas({
to: '0x...',
value: ethers.parseEther('0.1')
});
console.log('Gas needed:', gasEstimate.toString());
// Get current gas price (very low on Base)
const gasPrice = await provider.getFeeData();
console.log('Gas price:', ethers.formatUnits(gasPrice.gasPrice, 'gwei'), 'Gwei');from web3 import Web3
w3 = Web3(Web3.HTTPProvider('https://rpc.crypto-chief.com/base/YOUR_API_KEY'))
print('Connected:', w3.is_connected())
print('Chain ID:', w3.eth.chain_id) # 8453
print('Latest block:', w3.eth.block_number)
print('Gas price:', w3.eth.gas_price, 'wei')
# Check USDC balance (Base native USDC)
usdc_address = '0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913'
usdc_abi = [{"constant":True,"inputs":[{"name":"_owner","type":"address"}],"name":"balanceOf","outputs":[{"name":"balance","type":"uint256"}],"type":"function"}]
usdc = w3.eth.contract(address=usdc_address, abi=usdc_abi)
balance = usdc.functions.balanceOf('0x...').call()
print(f'USDC balance: {balance / 1e6}')const { ethers } = require('ethers');
const provider = new ethers.WebSocketProvider('wss://rpc.crypto-chief.com/base/ws/YOUR_API_KEY');
// Monitor new blocks on Base
provider.on('block', async (blockNumber) => {
const block = await provider.getBlock(blockNumber);
console.log(`Block ${blockNumber}: ${block.transactions.length} txs`);
});
// Monitor USDC transfers
const usdcAddress = '0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913';
const filter = {
address: usdcAddress,
topics: [ethers.id('Transfer(address,address,uint256)')]
};
provider.on(filter, (log) => {
console.log('USDC transfer detected:', log);
});Production-ready Base infrastructure
Optimized global infrastructure delivering <70ms latency with intelligent routing and Layer 2 caching strategies.
Enterprise-grade security with TLS encryption, DDoS protection, and redundant architecture ensuring maximum uptime.
Monitor all Base RPC activity with detailed metrics on request volume, method usage, latency, and error rates.
Nodes strategically distributed across continents to minimize latency for users worldwide with automatic geo-routing.
Infrastructure scales automatically during high-traffic events without manual intervention or performance degradation.
24/7 access to Base specialists with deep knowledge of Layer 2 architecture and OP Stack development.
Build the next generation of consumer apps on Base
Base's combination of low fees, Coinbase backing, and Ethereum security makes it the perfect platform for consumer-facing Web3 applications, DeFi protocols, and onchain products aiming for mainstream adoption.
Base's sub-cent fees and Coinbase integration enable truly consumer-friendly Web3 apps. Build social platforms, marketplaces, and games without forcing users to worry about gas costs or complex wallet setups.
Launch DEXs, lending protocols, and yield strategies with minimal friction. Our infrastructure supports high-frequency swaps, real-time price feeds, and complex DeFi operations with instant confirmation.
Create NFT marketplaces and minting platforms where users can trade freely without prohibitive gas costs. Our WebSocket support enables real-time marketplace updates and instant transfer notifications.
Integrate Base support into multi-chain wallets with reliable RPC access for balance tracking, transaction history, and seamless L2 operations. Perfect for mobile and browser extension wallets.
Leverage Coinbase's fiat infrastructure to build seamless fiat-to-crypto onramps. Our Base nodes ensure fast confirmation of deposits and withdrawals with comprehensive transaction tracking.
Build Base block explorers, analytics dashboards, and portfolio trackers. Our archive nodes support deep historical queries and comprehensive on-chain intelligence gathering.
Start building on Web3 — no credit card.
Flexible pay-as-you-go for any workload.
From $500 monthly plus 20% extra value.
Tailored solution for expert builders
All Subscription features plus: