How to host Flashblocks-aware RPC nodes

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Quick Start

1. Prerequisites:

• Docker and Docker Compose
• Minimum hardware requirements (see node README)
• Access to a Flashblocks websocket endpoint, we provide public endpoints in the env files in the repo

2. Set Up Environment:

# Clone the repository
git clone https://github.com/base/node.git
cd node

3. Start the Node with Flashblocks Support:

NODE_TYPE=base CLIENT=reth docker-compose up

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Configuration Options

• Node Type: Use NODE_TYPE=base to enable base reth node withFlashblocks functionality
• Network: Use NETWORK_ENV=.env.mainnet for mainnet or NETWORK_ENV=.env.sepolia for testnet

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Verifying Flashblocks Functionality

Test that your node is properly supporting Flashblocks by querying a pending block:

curl -X POST \
  --data '{"jsonrpc":"2.0","method":"eth_getBlockByNumber","params":["pending", false],"id":1}' \
  http://localhost:8545

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Available RPC Methods

Flashblocks-aware nodes provide all standard Ethereum JSON-RPC methods plus specialized Flashblocks endpoints. For more details, see the Flashblocks RPC API documentation.

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Further Resources

For detailed information about node setup, including hardware requirements and additional configuration options, refer to the Reth node README.