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feat: add devnet binary for local testing #505

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@madisoncarter1234 madisoncarter1234 commented Jan 16, 2026 •
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Summary

Adds base-devnet binary for local development and testing. Launches both base-builder and base-client with a pre-configured genesis, Montana-style interactive TUI, and built-in block driver.

Getting Started

Prerequisites

  • Rust toolchain
  • Foundry (for cast)

Run

# Checkout this PR
gh pr checkout 505

# Build all binaries
cargo build --release -p base-devnet -p base-builder -p base-reth-node

# Run devnet
./target/release/base-devnet

Test

# Send a test transaction (Alice → Bob)
cast send 0x70997970C51812dc3A010C7d01b50e0d17dc79C8 \
  --value 0.1ether \
  --rpc-url http://localhost:8545 \
  --private-key 0xac0974bec39a17e36ba4a6b4d238ff944bacb478cbed5efcae784d7bf4f2ff80

Endpoints

  • HTTP RPC: http://localhost:8545
  • WebSocket: ws://localhost:8546

Test Accounts (1M ETH each)

Name Address Private Key
Alice 0xf39Fd6e51aad88F6F4ce6aB8827279cffFb92266 0xac0974bec39a17e36ba4a6b4d238ff944bacb478cbed5efcae784d7bf4f2ff80
Bob 0x70997970C51812dc3A010C7d01b50e0d17dc79C8 0x59c6995e998f97a5a0044966f0945389dc9e86dae88c7a8412f4603b6b78690d
Charlie 0x3C44CdDdB6a900fa2b585dd299e03d12FA4293BC 0x5de4111afa1a4b94908f83103eb1f1706367c2e68ca870fc3fb9a804cdab365a

Features

  • Montana-style TUI with split log panels for client/builder
  • Keyboard shortcuts: q=quit, r=restart, s=save logs, Tab=switch panel
  • Transaction highlighting (blocks with user txs shown in green)
  • --no-driver flag for plugging in external consensus (op-node/Kona)

Test Plan

  • cargo fmt
  • cargo clippy - 0 warnings
  • cargo test - passes
  • Manual testing: send transactions, verify block inclusion

Closes #382

@madisoncarter1234
feat: add devnet binary for local testing
90b637f 
  Adds a new base-devnet binary that launches both base-builder and
  base-client nodes configured for local development and testing.

  Features:
  - Interactive TUI with split log panels for client/builder
  - Built-in block driver for automatic block production via Engine API
  - Pre-funded test accounts (Alice, Bob, Charlie with 1M ETH each)
  - Transaction highlighting (green indicator for blocks with user txs)
  - Configurable block time, ports, and data directories
  - Optional modes: --no-builder, --no-client, --no-driver
  - Log saving and process restart via keyboard shortcuts

  Closes base#382
@cb-heimdall
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cb-heimdall commented Jan 16, 2026 •
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@madisoncarter1234 madisoncarter1234 mentioned this pull request Jan 16, 2026
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feat(testing): create devnet binary

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@madisoncarter1234 @cb-heimdall