# Claude Code and other CLIs Use supported command-line tools with a vendor account or with models available through ZeroLog. - Claude Code - Codex Available tools are Claude Code and Codex. Their sign-in and usage follow the mode you choose. ## Native accounts and catalogue tools Choose the connection mode first. Native Claude Code and Codex use vendor accounts; ZeroLog Code uses catalogue models. *Setup, billing and limits for each mode.* | | Your own vendor account | Models on this service | | --- | --- | --- | | How you set it | Use the native Claude Code /login or Codex device sign-in in a private workspace. | Use ZeroLog chat or ZeroLog Code and select a model from the catalogue. | | Who bills you | The vendor, under your subscription. | Your ZeroLog credit, per request. | | Which limits apply | That vendor's plan limits, unchanged. This service does not raise them, extend them, or send a request past them. | Your ZeroLog balance and account limits. | | If a request fails | The vendor's limits apply. If a request is refused, follow the vendor's message. | If a request fails, choose another available model and try again. | Choose the account you want to use Your vendor subscription and ZeroLog usage have separate billing and limits. A ZeroLog account limit does not change the limits set by your vendor. Models on this service ## Use a ZeroLog model Choose a model from the catalogue. Requests count toward your ZeroLog usage and account limits. ## Where usage appears *Your own vendor account* Your vendor tracks this usage under its account and subscription. *Models on this service* ZeroLog shows this usage with your other account activity. Your account limits apply. The [/goal](https://zerolog.ch/docs/goal) continuation command belongs to ZeroLog chat; it is not automatically a native Claude Code or Codex command. See [native sign-in](https://zerolog.ch/docs/byoagent) and [tool handover](https://zerolog.ch/bring-your-own-ai-subscription). A native login alone does not establish access to every vendor model.