Marcus is open —
limited beta.
4 of 100 seats taken. Voice-powered AI COO running on your machine. Your data, your hardware, no monthly fee.
3-minute walkthrough
See Marcus Free run.
Included Free
Everything you need to get started.
No trial. No credit card. No feature gates. This is the real Marcus.
Voice Conversations
Talk to Marcus naturally via OpenAI Realtime API. Low-latency, real-time voice loop.
Knowledge Graph
Marcus remembers everything you tell him. Entities, relationships, context — all persisted.
Gmail & Calendar
Read, send, draft, and triage email. View and manage your Google Calendar — all by voice.
Web Search
Marcus can search the web for you and summarize results in real time.
Brain Dashboard
A visual dashboard showing everything Marcus knows — entities, connections, and memories.
100% Localhost
Runs entirely on your machine. Your data never leaves your hardware. Full privacy.
See It In Action
You talk. Marcus delivers.
Natural voice commands. Instant, context-aware responses.
"Marcus, check my email for anything urgent."
3 flagged — one from your investor, two client follow-ups overdue. Want me to draft replies?
"What meetings do I have tomorrow?"
Two calls: 10am with your developer, 2pm pitch with a new lead. I've pulled context on both.
"Search for the latest on Apple's AI strategy."
Found 4 recent articles. The key takeaway: Apple is doubling down on on-device models. Want a summary?
Prerequisites
What you'll need.
Four things. All free or pay-as-you-go. Setup takes under 10 minutes.
A Mac
Apple Silicon or Intel — both work.
Docker Desktop
Installed and running. Docker handles all the infrastructure.
OpenAI API Key
Powers voice conversations and intelligence. Pay-as-you-go.
Supabase Account
Free tier works. This is Marcus's long-term memory.
Install Marcus in one command.
Paste this in your terminal. Marcus interviews you, walks you through Google OAuth, and is talking back to you in under ten minutes.
$ curl -sSL https://buildwitheman.com/install/marcus.sh | bash -s -- --free
Heads up about the Google warning
When you connect Gmail and Calendar, Google will show an "unverified app" screen. That's because Marcus is mid-verification — your data is still safe (Marcus runs on your machine, no third party sees your inbox). To proceed: click "Advanced" → "Continue to Marcus".
Workspace blocked?
If your work Google account auto-blocks unverified apps, email [email protected] and we'll set you up another way.
After Install
Three steps to your AI COO.
Marcus interviews you
6 quick questions to learn who you are, what your business does, and how you like to work.
Connect email & calendar
Marcus walks you through OAuth for Gmail and Google Calendar. One-time setup, auto-refresh tokens.
You're live
Start talking to your AI COO. Marcus is ready to execute.
Marcus Pro unlocks the full fleet.
The free tier gives you a powerful AI COO on your machine. Pro adds 8 specialist agents, social media posting, content pipeline, remote access, and managed infrastructure — so you never think about Docker again.