Network

Testnet (Sepolia)

Security

• Never use public RPC endpoints in production — they are rate-limited and offer no privacy guarantees; use a dedicated node provider or self-hosted node
• Never embed RPC API keys in client-side code — proxy requests through a backend to protect provider credentials
• Validate chain IDs before signing transactions to prevent cross-chain replay attacks
• Use HTTPS RPC endpoints only — reject any http:// endpoints to prevent credential interception

Critical Notes

• Public RPC endpoints are rate-limited - not for production
• For production: use node providers or run your own node (see run-node.md)
• Testnet ETH available from faucets in Base documentation

Wallet Setup

1. Add network with chain ID and RPC from tables above
2. For testnet, use Sepolia configuration
3. Bridge ETH from Ethereum or use faucets