Run your company from one place, with your AI.

Everything your company runs on, together in one place on your own machine. Your AI does the day-to-day - and anything that heads out the door waits for your tap.

Free · MIT-licensed · your machine · bring your own agent
macOS (Apple Silicon) first · Intel, Linux & Windows on the roadmap
the company loop - live
agent + git + markdown + a human gate - the stack power users already trust, made usable
agent - the intelligence git - the memory markdown - the documents connectors - the senses a human tap - the gate
What it does

Just ask. It drafts. You approve.

you →

“Send Acme their Q3 review.”

gated →

Draft assembled in your voice, sitting in Pending - nothing sent until you tap.

you →

“Who's gone quiet this month?”

done →

A short list, each with a warm nudge already drafted.

you →

“Draft this month's investor update.”

gated →

Written from the brain's real numbers - you skim, tweak, send.

you →

“Log the net-30 terms we agreed.”

done →

Captured to the brain as a decision - versioned and reversible.

How it works

Every recurring job becomes one self-improving loop.

Sensor → Policy → Tools → Gate → Learning, around one brain. The agent runs the middle; you tap at the edge.

Sensor

It arrives

Email, a form, a metric - connectors bring it in as files. Read-only.

Policy

What you decided

Your company's verbs, written down once.

Tools

The agent works

Directly on your files. Your files live on your machine; only your own agent talks to your model provider; sync pushes to a repo you control — we can't read either.

Gate

You approve

Pending - needs you
send Q3 review to acme@co
→ 1 email · 2 attachments
draft ready, nothing sent yet
ApproveEdit
Learning

It accrues

decisions/log.md
+ chose net-30 for enterprise
+ supersedes earlier terms
committed · reversible
One brain

It all lights up

Pricing

Download & Run it free.

Free

Open source
$0 forever

Download the app and run your company on it yourself. The whole platform, nothing held back.

  • The full platform - MIT-licensed, auditable, forkable
  • Your company as one repo you own outright
  • Bring your own agent and subscription
  • Every outward action gated by a human tap
  • Your files live on your machine; only your own agent talks to your model provider; sync pushes to a repo you control - we can't read either
Download BuildEx

Hosted sync & seats

Coming soon
Also $0 for early adopters

The hosted companion for teams. Your workspace is backed up and synchronized seamlessly across your entire team.

  • Everything in Free
  • Automatic backups and seamless syncing across your team's machines
  • Multi-seat team access
  • No cloud reading your data
Join waitlist

You own everything at every step. It's a git repo of markdown - clone it and walk away, any day.

Proof, not promises

BuildExponential.Org runs on BuildEx OS.

Our own company operates on the product - charter, decisions, pipeline and content engine all live in a BuildEx workspace. The platform is open source. See it running →

git is the database markdown is the document your agent is the intelligence a human tap is the gate
Questions

The things a careful founder asks.

Do you see our data or our AI credentials?+
No. The brain lives on your machine and syncs to a repo you control. Your agent authenticates itself with your own subscription - BuildEx never sets or reads your model keys. That's an architectural invariant, not a promise.
What exactly do we own at the end?+
A repository of plain markdown: every decision, client, loop and convention. Clone it and it runs anywhere. There is no proprietary format and nothing to rip out.
How is this safe if an AI is operating the company?+
The agent reads freely and drafts freely, but anything outward or irreversible - sending, paying, posting, deleting - waits in a Pending tray for a human tap. Autonomy is something the gate grants, loop by loop, as trust builds.
Which AI does it use?+
Claude Code today; the driver seam is open - other agents welcome as contributions. It requires a Claude Pro subscription or higher. We never resell you tokens.
Is this just for technical companies?+
No. The files are plain text, but you never see them - the console speaks in companies, clients and approvals, not repos and terminals. It's built for founders and operators, not developers.
What does it cost?+
The app is free and open source under MIT - download it and run it yourself, forever. For teams, we offer hosted sync and seats. Tell us about your company and we'll be straight about the details.

Run your company on one brain.

Download the app and start today - free and open source, on your machine. Or talk to us about standing it up for your team.

Download BuildEx Talk to us
Free · MIT-licensed · bring your own agent · your files live on your machine.