Your AI builds you real apps.
Ask in plain words and get a real app that remembers your stuff — the same one in Claude, ChatGPT, and on the web. No code, ever.
Free during the public beta · no credit card · or self-host it today
The same app, wherever you already work.
Connect openmcp.app once, and your apps travel with you. Claude is live in the beta today, and every app also opens at your own openmcp.app link. ChatGPT is rolling out next — it's built on an open standard, so more will follow.
Just ask. The app appears.
Tell your AI what you need, the way you'd tell a person. It designs the app, wires up every button, and hands it back ready to use — in seconds. Want it different? Ask again.
They remember your stuff.
Most AI answers vanish the moment you scroll away. These don't. Every app keeps its own memory — your budget, your habits, your lists stay put, and your AI updates them right alongside you.
Yours everywhere — and open.
The same app follows you into every AI you connect, and lives at your own web link. openmcp.app is open source under AGPL, so you can run the whole thing yourself. No lock-in, ever.
Three steps to your first app.
No setup, no code. If you can chat, you can do this — about two minutes to connect.
Connect your AI
Sign in, then add your personal openmcp.app link to Claude or ChatGPT. You only do this once — here’s how.
Ask for an app
Tell your AI what you want. It builds the app right there in the chat, ready to use.
Use it anywhere
Open it again in any connected AI, or at your web link — your stuff is already inside.
New here? The two-minute connect guide walks through Claude, ChatGPT and the usual first-time snags.
Free to start. Honest about beta.
Everything's free while we're in public beta. Use our hosted version, or run the whole thing yourself — that part is free forever.
Everything you need, for one person.
- ✓ Unlimited apps — built and reopened free
- ✓ Your apps, synced across devices
- ✓ A generous hosted storage allowance
- ✓ Your data stays yours
More room, and a way to share with the people you work with.
- ✓More storage & higher limits
- ✓ Share apps with a team
- ✓A shared dashboard & roles
Run the whole engine on your own machine — no account needed.
- ✓ Unlimited, on your computer
- ✓ Your data never leaves it
- ✓ AGPL — audit it or fork it
curl -fsSL https://openmcp.app/install.sh | shThe things people ask first.
Still unsure about something? Email [email protected] — a person reads it.
What is openmcp.app, in one paragraph?
It lets the AI you already use build you a real app — a habit tracker, a budget, a reading list — by asking for it in plain words. The app keeps its own data, so it is still there tomorrow, and you can open it inside your AI or on the web. No code at any point.
Do I need to know how to code?
No. You describe what you want and your AI writes the app. Changing it later is another sentence — “add a weekly total”, “make the numbers bigger”. Nothing you touch is code.
Which AI assistants does it work with?
Claude on the web is the tested path today, and it is where everything works. ChatGPT connects too and your AI can build and update things through chat, but it does not draw the app’s interface yet. Claude Desktop and Claude Code have an upstream bug that can stall an app in the chat. The current state per host is kept on our beta status page, and every app always opens with its full interface at openmcp.app/app.
What actually happens to the data in my apps?
It is stored as collections that live outside any single app, so several apps can read and write the same list. You and your AI write to the same rows — you tick a box in the app and your AI sees it in the next message. Every change is recorded with who made it, and can be undone.
Can I run the whole thing myself?
Yes. The engine is open source under AGPL-3.0 and self-hosting is free, unlimited, and needs no account — your data stays a file on your own machine. It is the same engine we run for the hosted service, and the same ready-made apps; hosting with us buys you the setup, sign-in, backups and upkeep, not extra features.
Is it really free?
The hosted beta is free and asks for no card. Self-hosting is free forever. Paid plans will come later for more storage and team features; we will say what they cost before anyone is asked to pay.
Can I get my data out, or delete it?
Yes to both. During the beta, ask us and we send you a copy of your apps and their data; ask us to close your account and we delete it. You or your AI can also delete any single app at any time — note that deleting an app removes the app, not the list it was showing, since collections are shared between apps. If you want the contents gone as well, ask for that explicitly.
How finished is this?
It is an early public beta run by a small independent project. Things break, and we keep an honest list of what is broken on the beta status page. Keep your own copy of anything you cannot afford to lose.
Not signing up today?
Signing in takes a few seconds and the beta is free — but if you’d rather wait, leave your email and we’ll write when there’s something worth telling you. Say what you’d build and we’ll aim the beta at it.
We store your email and that one line, nothing more — no tracking, no third parties, and only the occasional beta note. See Privacy.