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Use your existing subscription. MTS’s built-in Codex integration uses Sign in with ChatGPT and your account’s Codex access. It does not currently support API-key billing or other providers’ subscriptions. You can add multiple eligible ChatGPT accounts. Their own limits and workspace policies still apply.
Codex itself supports more than one authentication method; MTS currently exposes ChatGPT sign-in for its embedded teammates. See OpenAI’s Codex authentication documentation for the distinction between subscription and API access. For another provider or billing option, contact hello@gatetrix.ai. You can also connect an external agent using its own runtime and provider.

Add an account

  1. Open a teammate’s conversation menu and choose Codex accounts….
  2. Enter a recognizable account name and choose Add and sign in. Complete Sign in with ChatGPT in the browser, using the intended account.
  3. Repeat for another eligible subscription if you want to use more than one.
  4. Check the account list. Using now marks the account selected for the current conversation; Default marks the first account eligible for automatic selection.
Accounts are shared across projects and teammates in this MTS workspace. Each has a separate sign-in. Usage is shown when Codex reports it; unknown usage does not mean the account has no allowance left.

Choose priorities

In the account dialog, Global settings apply to agents using Use global settings. Select This agent and turn that setting off to customize the agent’s account order and switching preference across its conversations. Use the up/down arrows to set priority. Use automatically makes an account eligible for defaults and fallback. Turn it off to keep the account Manual only. New conversations skip accounts known to be unavailable; changing the order does not move an existing conversation to another account.

Switch a conversation manually

Stop active work and resolve pending integration requests first. Choose Use for this conversation on the account you want. MTS preserves the conversation’s visible history, saved Codex context, project permissions, and working folder. Switching alone does not send a new prompt. The destination account needs access to the selected model and thinking effort, and the installed Codex runtime must support transferring the saved context. If it cannot, MTS reports the failure rather than silently starting without it. Switching permits that conversation’s history to be used with the destination account and its associated workspace. Consider the accounts’ different workspace policies before sharing a conversation between them.

When a subscription reaches its limit

Automatically switch on usage limits and account eligibility are on by default. MTS tries eligible accounts in priority order when Codex reports a supported usage-limit failure before the turn has performed work. If the turn has already taken actions, or questions or integration requests need attention, MTS pauses for review instead of replaying the instruction. Maintenance sessions also require explicit recovery. Generic errors and transient rate limits do not trigger automatic switching. If no eligible account is available, the conversation pauses visibly. You can review the account list, wait for a reset, or switch manually and continue after checking the work’s state. MTS does not proactively switch back when a quota resets. Turn off Automatically switch on usage limits if you want to decide each switch yourself. An account still used by a conversation cannot be removed; sign-out is blocked while affected conversations are busy.