01 / AT YOUR SIDE
A quiet place
at the edge.
Your work stays front and center. The Open One waits at the edge of your screen until you reach for it.
The open-source inbox for your coding agents
Your agents.Within reach.
One inbox for Claude Code and Codex.
Answer questions and keep work moving, from your Mac or phone.
Open source. Native on Mac. Yours to build and make your own.
In good company with
Claude Code
CodexYour agents, via CLI
↓Claude CodeCodexYour agents, via CLI39 seconds
Meet The Open One.
Every agent, one inbox. See how it fits into your day.
Less switching. More making.
Stay in your flow.
Keep everyone in the loop.
Your agents keep working. The Open One keeps the important bits close.
Actual macOS app · sample conversations
A quiet place
02 / KEEP THINGS MOVING
A question.
A click. Onward.
Your agent needs a decision. Open your Inbox, choose an answer, and let it get back to work.
03 / KEEP THE CONVERSATION GOING
One more thought?
Just send it.
“Make Studio the recommended plan.” Type a follow-up, send it to Claude, and watch the change take shape. Same conversation. Same context.
04 / CLOSE THE LOOP
Done working.
Ready for you.
A finished result is waiting at the edge. Open it, review what changed, and keep moving.
Small footprint. Thoughtful details.
A home for the in-between.
The questions, the handoffs, the “one more thing.” All within reach.
01 / YOUR INBOX
The next thing that needs you.
Questions and finished work in one place. See what needs a decision, send an answer, and get back to your own work.
02 / YOUR VOICE
Less ceremony. Just say it.
Double-tap Control to open Talk in The Open One. It’s enabled by default. Dictate a thought, review it, and send it to the agent you choose.
03 / ON YOUR PHONE
Step away. Stay in the loop.
Read conversations, answer questions, and send follow-ups from your phone’s browser. Your agents keep running on your Mac.
Optional phone access. Keep your Mac awake, join the same Wi-Fi, and scan the connection QR.
Pick up where you left off.
Find recent conversations and resume eligible idle sessions from The Open One.
Keep your hands on the keys.
J and K to move through your Inbox. Number keys to answer. E to clear finished work.
Show what you mean.
Capture a region of your screen, preview it, and attach it to your conversation.
Open source, from the start
Read it.
Build it.
Make it yours.
Your workflow deserves tools you can understand and shape. The Open One’s SwiftUI and AppKit source is yours to explore, adapt, and build on your Mac.
- Inspect how your agents connect.
- Change the details to fit your workflow.
- Build and run your own copy.
From source to your screen.
Build from our public GitHub repository. You’ll need macOS 13+, Apple’s Command Line Tools, and Python 3. If you need the tools, run xcode-select --install and finish installing them before building.
CLONE, BUILD, AND OPEN
git clone https://github.com/OpenOnePenguins/theopenone.git &&
cd theopenone &&
bash scripts/build.sh &&
open "dist/Open One.app"- 1Build and open
Paste the commands into Terminal. They download the source, build it, and open the app.
- 2Connect your agents
Guided setup checks Claude Code or Codex, helps you sign in, and lets you choose a project.
- 3Get your first reply
Verify your connection, open your Inbox, and optionally connect your phone.
A few things to know
Good questions.
A little clarity before you dive in.
What does open source mean for me?
You can inspect how The Open One works, change the native Swift code to suit your workflow, and build your own version. Start with the source checkout and the build instructions above. Your coding agents still use their existing accounts and billing.
Is The Open One another coding agent?
Your coding agents do the coding. The Open One gives their conversations, questions, and finished work a shared home on your Mac. It can start local Claude Code and Codex sessions using your existing CLI setup.
How is it related to One?
The Open One is an independent, open-source native macOS recreation, inspired by One. It is built with original SwiftUI and AppKit code and does not use One’s private source or backend. It does not yet offer full feature parity.
Can I keep using my terminal?
Yes. The Open One can observe recent local Claude Code and Codex conversations. For direct control of a live terminal session, connect it through the optional Herdr integration. You can also resume eligible idle conversations or start new sessions in The Open One.
Where do my conversations go?
The Open One keeps its app data on your Mac. Managed requests use the agent CLI you installed and its existing authentication. Optional AI recipient suggestions send your draft and limited candidate context through Claude Code; you choose the recipient before sending. Dictation uses Apple’s Speech framework.
Can I check in from my phone?
Yes. The mobile Inbox lets you read conversations, answer agent questions, and continue supported sessions from your phone. Your Mac stays awake with The Open One running. Open Remote access on your Mac, click Connect phone, and scan the QR on your phone while both devices are on the same Wi-Fi network. The open-source mobile client is also included in the repository.
What do I need to run it?
macOS 13 or later, Apple’s Command Line Tools and Python 3 to build the app, and an installed, signed-in Claude Code or Codex CLI for managed agents. Python 3 also runs the agent bridge. Your agents keep using their existing subscriptions or billing.
Open code. A calmer workflow.
Your workflow.
Your source code.
Build The Open One Open source. Native to Mac. Yours to make your own.