Does crystl work fully with Codex?

Yes. Codex supports hooks, so approval cards and notifications work just like they do for Claude Code, and Codex sessions feed the history navigator and token metrics. You can spawn Codex workers from the CLI (--agent codex) and mix Codex and Claude agents in the same workspace. Antigravity CLI runs with hooks too, so activity and notifications work for it, but its hook adapter can’t yet return approval decisions, so approval cards can’t gate Antigravity tool calls.