Codex CLI with idapt

A TOML provider block with command-based auth points Codex at idapt and pulls the live model catalog.

1. 1

   Install

   bash

   npm i -g @openai/codex

2. 2

   Point it at idapt

   toml

   # ~/.codex/config.toml
   model_provider = "idapt"
   model = "openai/gpt-5.6-luna"
   model_reasoning_effort = "high"
   
   [model_providers.idapt]
   name = "idapt"
   base_url = "https://idapt.app/api/openai/v1"
   wire_api = "chat"
   
   [model_providers.idapt.auth]
   command = "sh"
   args = ["-c", "echo $IDAPT_API_KEY"]

   Command-based auth also triggers the model-catalog refresh, so non-OpenAI ids get real metadata instead of the Unknown model fallback. Windows: use command = "powershell" with Write-Output $env:IDAPT_API_KEY. model_reasoning_effort takes low, medium, high, xhigh, or max.

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