Introduction to Node API

Use Stackup's nodes to access ERC-4337 bundlers and blockchain nodes

Bundlers 🤝 Nodes

Stackup offers nodes as a service so that you can focus on building your app instead of running infrastructure.

A node is an individual computer or device that participates in a blockchain network. To connect to the blockchain you'll need access to a node, typically via JSON-RPC. With Stackup hosted services, you can access both nodes and ERC-4337 bundlers through a single URL and API key.

Supported networks

Refer to the table below for network support using Stackup hosted services.

NetworkSupported
Ethereum
Goerli
Sepolia
Polygon
Mumbai
Avalanche
Avalanche Fuji
Optimism
Optimism Goerli
Binance Smart Chain
Binance Smart Chain testnet
Arbitrum One
Arbitrum testnet
Base
Base Goerli