The Coding Agent runs Claude Code on your box. A Claude Pro or Max subscription has a five-hour session window and a weekly cap. Once one of them is used up, a box with a single account stops coding until the limit resets. That includes a queue left running overnight. Connect more than one Anthropic account and the box carries on. When the account a run is using hits its limit, the run moves to the next account and continues in the same session. The first account is used again as soon as its limit resets.
The Anthropic accounts card badged 2 of 3 ready: a Claude Max account marked In use, a Claude Pro account marked Limited until a time later today, and an API key marked Ready, with a button to connect another account.

Settings → Providers → Anthropic accounts, in the order the box tries them

These accounts are for coding runs only. They do not change which AI answers in the chat: that is the provider at the top of Settings → Providers (see Choose Your AI Provider).

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How the fallback works

  • Your order decides. Every coding run uses the first account in the list that can answer. It never takes turns (round-robin): account #2 only works while account #1 is out.
  • A limit moves the run; it doesn’t end it. Claude Code reports a limit in its own words, like “You’ve hit your session limit · resets 10:50pm”. When that happens, the box notes when the account is back, switches the run to the next account and resumes it in the same session. The work so far and the conversation are kept.
  • The first account comes back by itself. Once its reset time passes, the box uses it again for the next run, with nothing for you to do.
  • When every account is limited, runs wait. A run that cannot continue on any account is paused, not failed, and shows Waiting. The box resumes it at the first reset without you pressing anything. Until then, a new coding run is refused with the reset time rather than started and cut off.
  • Only a usage cap counts. This covers the session (five-hour) window, the weekly cap, an API key’s rate limit and a prepaid key with no credit left. Any other failure is a real failure and is not passed from account to account.
If a limit message gives no reset time, the account is set aside for five hours, the length of a session window.

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Connect your accounts

1

Open the list

Go to Settings → Providers and scroll to the Anthropic accounts card, at the bottom of the page.
2

Connect a Claude account

Press Connect an account. Once you have one, the button reads Connect another account. Give it a name if you like, such as Work Max. The name is how the box refers to the account in notices and in the run timeline.
3

Sign in with Claude

Sign in with Claude opens Anthropic’s sign-in page in a new tab. Sign in with the account you want to add and approve access. Anthropic then shows a code: paste it into the card and press Connect.
4

Add the next one

Repeat the steps with a different Claude account. Sign out of the first one on claude.ai first, or use a private window, or Anthropic will sign you in as the same account again.
Signing in again with an account that is already on the list does not add a second row. It renews that account’s sign-in and keeps its place. If Connect fails or says there is no pending sign-in, press Sign in with Claude again for a fresh code.

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API keys and the Terminal sign-in

  • An Anthropic API key. In the connect panel, choose Use an API key instead and paste the key (it starts with sk-ant-). The box checks it with Anthropic and refuses it only if Anthropic says no. If Anthropic cannot be reached, the key is saved and the first run that uses it checks it.
  • The box’s own Claude Code sign-in. If you signed in by running claude in the Terminal app, the box adds that sign-in to the list by itself. It is renewed in the Terminal, not here. Removing it only takes it off the list, and Add this box’s Claude Code sign-in puts it back.
  • A key you saved before. An Anthropic API key already saved in the Coding Agent app became account #1 automatically when your box updated. You don’t have to re-enter it.
A box keeps up to 8 accounts.

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Order and manage them

Each row shows the account’s place in the order, its name, the Anthropic account it belongs to and its state. The badge at the top of the card sums it up: 2 of 3 ready, or All limited · back at 22:50.

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What you see when a limit hits

  • In the run’s timeline: Anthropic account “Work Max” hit its usage limit (back at 22:50); carrying on with “Personal Max” in the same session.
  • A notice on the desktop, and in your Telegram chat if you connected a bot. There are two kinds: one when an account is set aside and the box switches, and one when no account is left. Pressing the desktop notice opens Settings → Providers. You get no notice when the box goes back to your first account: that is the list working as intended.
  • On a waiting run’s card: Waiting: every Anthropic account on this box is at its usage limit. It carries on by itself at 22:50. You don’t need to press Resume.

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The assistant knows too

The assistant reads the same list with the anthropic_accounts tool: how many accounts can answer, which one is in use and when a limited one is back. It uses this before starting or retrying a coding run. When every account is limited, it waits for the reset instead of spending attempts. The tool can only read: adding, removing and ordering accounts needs your signed-in browser session. See Agent Interface.

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Privacy and security

  • Keys and sign-in tokens are stored encrypted in the box’s secret store. They are never written to its configuration file, to logs, to run records or to pull requests, and the card never shows one again after you save it.
  • The card shows each account’s name, the email address Anthropic reported for it and its state. The assistant gets the names and states only: no email and no credential.
  • Only you can change the list, from the box’s own pages while signed in. The assistant, and any page on another site, is refused.
Each account is used under its own Anthropic plan and terms. Connect accounts you are entitled to use.