Ethrex as a local L2 development node
July 13, 2026 ยท View on GitHub
Prerequisites
- This guide assumes you've read the dev installation guide
- An Ethereum utility tool like rex
Dev mode
In dev mode ethrex acts as a local Ethereum development node and a local layer 2 rollup
ethrex l2 --dev
after running the command the ethrex monitor will open with information about the status of the local L2.
The default port of the L1 JSON-RPC is 8545 you can test it by running
rex block-number http://localhost:8545
The default port of the L2 JSON-RPC is 1729 you can test it by running
rex block-number http://localhost:1729