Reasonix

Reasonix is a terminal coding Agent backed by AnyRouter's OpenAI-compatible API.

1. Install Node.js

Install Node.js 20.10+. Windows users should also install Git for Windows.

2. Get a AnyRouter API Key

Get an API Key from the AnyRouter open platform. On first launch, the Reasonix setup wizard asks for it and saves it to ~/.reasonix/config.json.

3. Start using it

cd /path/to/my-projectnpx reasonix code

It uses gpt-5.5 by default. In the TUI, type /pro to switch to Pro, or /preset max to use Pro for the whole session. Type /help to see all commands.