CodexIn
LoginStart setup

Cline

Configure Cline with CodexIn through VS Code settings or the Cline auth command.

Setup progress
Finish these once. After that, CodexIn works like a prepaid OpenAI-compatible endpoint.
x
Have usable credits
Create or select an API key
Copy the setup command
Send the first request
Sign in to personalize
Install in your tool
Pick the coding tool and operating system, then copy the exact command.
PowerShell writes config files into C:\Users\<username>\.codex
Cline
cline auth --provider openai-compatible \
  --apikey "ci_live_YOUR_KEY_HERE" \
  --baseurl "https://api-ae2cab7a6bab.preview.codexin.lol/v1" \
  --modelid "gpt-5.5"

# Use the saved provider on CLI runs. Add thinking per task:
cline --thinking xhigh "check this repository and suggest the first safe improvement"
VS Code users should save the OpenAI Compatible provider in Cline settings.
CLI users can persist provider, key, base URL, and model with cline auth.
Discord