What's new Arbor from the command line →

The personal hub for your agent accounts and machines.

Pool your Claude and Codex subscriptions, share them with every machine you own, and send work to whichever machine has room. It works under whatever runs your agents now.

Download for MacSource on GitHub

Free and open source, for Macs with Apple silicon. How it works

Accounts: Claude at 88% left across two Max accounts and Codex at 32% left across three, each account with its 5-hour, weekly and per-model windows.

One proxy between your machines and your accounts

Agents send their requests to Arbor's proxy, which passes each one to an account with room left.

  • studioClaude Code in a desktop app
  • labCodex over SSH
  • miniClaude Code in a terminal
  • Add machine
ArborThe proxy
  • claude-maxClaude · Max 20x · 78% left
  • claude-workClaude · Max 20x · 42% left
  • codex-teamCodex · Pro · 14% left
  • Add account

  • Add an account

    Every machine can use it straight away.

  • Add a machine

    It gets every account you've signed in.

  • An account hits its limit

    Requests go to the others until it resets.

  • A machine is busy

    The next run goes to another in its pool.

Works with the agent app you already use

Claude Code and Codex pick up the proxy from their own settings, so whatever starts them uses your accounts. When Arbor starts a run, it hands it to the app on that machine.

Your terminal or agent app

  • Runs the sessions
  • Worktrees, branches and diffs
  • Chat, approvals and pull requests

Arbor

  • Signs each account in once and shares it with every machine
  • Moves to the next account when one hits its limit
  • Sends each run to a machine with room
  • Checks each machine's health and agent versions
  • Keeps skills, instructions, MCP servers and plugins the same
  • Records usage and spend across every machine

Stop switching accounts

Sign each Claude and Codex account in once. Arbor tracks every limit and spreads the work across them.

  • ClaudeFor Claude Code
  • ChatGPTFor Codex
  • xAIFor Grok models
Accounts › Limits

Every limit in one place

Each account's limits, added up per provider.

  • The 5-hour, weekly and per-model windows, and when each resets
  • A warning when you'll run out before the reset
  • Claude's banked resets and Codex's reset credits
Accounts: Claude at 88% left across two Max accounts, each with its 5-hour, 7-day and per-model windows, and Codex at 32% left.
Home

In the order the proxy uses them

Accounts are listed in the order the proxy tries them, with a reason beside any it's skipping.

  • Pause an account at any cap you set; the cap eases as the reset nears
  • Suggests an order that uses up the accounts resetting soonest
Home's accounts: claude-max and codex-main in use, codex-backup retrying and back in 4 minutes, codex-team at its limit and back in 3 days.
Accounts › Value

What each subscription is worth

Every request is priced at API rates and added up per account.

  • Value against what each subscription costs
  • Which subscription you could drop
  • Spend per session, project and week
Value: $1,000 a month of subscriptions worth $2,663.67 at API prices over the last day, 81 times their cost, account by account.

Across all your machines

Point your Macs and Linux machines at the proxy and they share the same accounts.

Machines

A page for every machine

Arbor checks each machine over SSH and shows what its agents are running.

  • CPU, memory, disk, network and latency
  • Which Claude Code and Codex it runs, with an update when one's behind
  • Start an agent to fix a warning, from the warning itself
The mini machine's page: healthy at 100, a checklist bringing it in line with studio at 3 of 11 steps, and its CPU and memory.
Sessions › Live

Every session, whatever started it

One live list of Claude Code and Codex sessions on all your machines, grouped by machine and project.

  • Waiting on you, working, failed or done
  • An alert on your Mac or phone when one needs you
The live board: sessions on studio grouped by project, one needing approval, one with a question and two done.
Sync

The same setup everywhere

Instructions, skills, MCP servers, plugins and hooks compared across machines and coding agents, and kept in step from a git repo.

  • Finds broken links, clashing skills and drift
  • Shows every change before it's made
  • Backs up first, and every change can be undone
Sync comparing lab and mini with studio, and its checks: two problems and ten warnings, starting with a link that leads nowhere.

Send work where there's room

Group machines into pools. Each run goes to a machine with room, on accounts with room.

Pools

Pick the machine with room

Arbor weighs each machine's agents, CPU and memory, and shows where the next run would go.

  • Prefer a machine, use one less often, or keep one for runs you start yourself
  • When a pool is full, wait, spill into another pool or turn the run away
  • A run is handed to the agent app or command line on the machine Arbor picks
Pools: Builds with three of four machines free, each one's agents, CPU and memory, and the next eight runs spread across studio and mini.
Automations

Every scheduled run in one list

Arbor's own automations, and the ones your other apps scheduled, from every machine.

  • Run on one machine, or on whichever pool member has room
  • Ones set to run on their machine keep going with Arbor closed
  • Claude and Codex runs use your accounts through the proxy
Automations: Daily changelog on studio, Regression scan on the Builds pool and Sentry watch on mini, with a Codex app and a Claude task beside them.
Pools › SSH

One SSH host per pool

Connect to a pool like any other host, from a terminal or any app that uses SSH.

  • Host keys come only from your own known_hosts
  • One line added to ~/.ssh/config, backed up first
Command line

Your agents can use Arbor too

The arbor command lets you, or any agent on your Mac, read limits, machines and usage, and make the changes you agree to. Each change shows in the window straight away.

  • An MCP server and an agent skill, installed from Settings › App
  • Anything Arbor would confirm prints a plan and waits for --yes
  • Account tokens and other secrets are never shown

Also in Arbor

  • Alerts: Claude Code needs permission and Codex is waiting for you, on studio, a minute apart.

    Alerts

    Your Mac or phone tells you when an agent is waiting, a machine drops out or a limit runs ahead.

  • Weekly: $1,082.15 spent over eight sessions this week, and the pull request that merged with what it cost.

    Weekly report

    Spend, merged pull requests and the costliest sessions, exported as one page.

  • Projects: arbor and proxy with their sessions, pull requests, lines changed, tokens and cost.

    Projects

    Sessions grouped by project, with the pull requests they opened and what each cost.

  • Agent updates: Claude Code 2.1.281 on studio and mini fails no more often than older versions, with Update the rest beside it.

    Agent updates

    Try a new Claude Code or Codex on one machine, compare its failures, then update the rest.

  • Requests: each one's time, machine, client, model and input tokens.

    Every request

    Each one's machine, client, model and tokens, and why any failed.

  • Session archive settings: every session file on this Mac kept and up to date, on a drive with 1.1 TB free.

    Session archive

    Every transcript from every machine, copied to a drive you choose.

  • All time: 870.9B tokens since September 2025, and a trend by the week.

    All-time tokens

    Every token back to your first session, by model, machine and month.

  • The search palette open over Home, listing Arbor's pages with their shortcuts.

    Search

    ⌘K opens any page, project, session, machine or account.

  • Settings › Updates: a new Arbor and a new proxy core, each with Update now.

    Updates

    Stable releases, or nightly builds of what's next. The proxy keeps serving through an update.

Privacy

  • Sign-ins stay on your Mac

    Only the Mac that runs Arbor holds your accounts. Other machines get the proxy's address and a key.

  • Counts, not conversations

    Arbor reads session ids, times, models and token counts, never prompts or replies. Only the session archive copies whole transcripts, to a drive you choose.

  • Usage data you can turn off

    Anonymous usage data and crash reports help fix Arbor. Turn them off in Settings › App.

Questions

Can I download it?

Yes, for Macs with Apple silicon, from the latest release on GitHub. It isn't notarized yet, so the first time it opens, choose Open Anyway in System Settings › Privacy & Security. Updates install themselves after that.

Is it open source?

Yes, MIT licensed. The source is on GitHub, and every release is built from it.

Does it change how my agents work?

Only where they send their requests. Claude Code and Codex read the proxy's address from their own settings. Nothing else on a machine changes unless you bring its setup in step from Sync.

Which accounts can it use?

Claude and ChatGPT accounts for Claude Code and Codex, signed in through each provider's own sign-in page. xAI works too.

Which coding agents does it work with?

Claude Code and Codex use your pooled accounts. Sync also keeps instructions, skills and MCP servers in step for other coding agents on your machines.

What does another machine need?

Its Claude Code or Codex pointed at the proxy. For health checks, pools and keeping its setup in step, SSH access from the Mac that runs Arbor.

Does it run on Linux?

Arbor itself runs on a Mac. The machines that share its accounts can be Macs or Linux.

Does Arbor have to stay open?

Agents send their requests through the proxy on the Mac that runs Arbor, so keep it running there. Automations set to run on their own machine run with Arbor closed.

Is it for teams?

No. It's for your own accounts on your own machines.

What's new

  1. 1.0.18Arbor from the command lineThe arbor command and an MCP server, so you and your agents can check limits, machines and usage, and make changes you agree to.
  2. 1.0.11Every machine at a glanceThe sidebar shows each machine's health and working agents, and each provider's limits, with details on hover.
  3. 1.0.8Edit your setup repo in ArborBrowse the setup repo's files, see which machines have the latest of each, then edit and commit them together.
  4. 1.0.0Arbor 1.0Choose stable releases, or nightly builds of what's next.
Changelog →