Yes, the skill is something like the following:

# Codex Verification Skill

Use OpenAI Codex as an independent reviewer via `codex exec`.

## How to Call Codex

*Standard pattern with answer extraction:* ```bash CODEX_OUTPUT=$(timeout 120 codex exec '<your prompt here>. Put your complete analysis inside <answer></answer> tags.' 2>/dev/null)

In something like ADK, you can have multiple agents and subagents, each can have it's own prompt and model assigned, and they can just do their thing as normal.

One can always give it the CLI and keys to any service, chat bot or otherwise