fline
Ask for early access Early access
private beta

It works on your computer. Let's get it online.

Send people a link, add a database of your own, and use a web address you own. Ask Claude Code to put it on fline.

Today: your project in a folder on your computer, and Claude Code or Codex to send it. Cursor and VS Code have setup steps too, not yet tested from start to finish.

Ask for early access What fline does today

Free during the private beta. No card. We open accounts by hand, a few at a time.

How it works

You built it with Claude Code. Put it online the same way.

  1. Connect.

    Paste one line from your fline dashboard into your computer's Terminal app, then follow its steps to approve fline in your browser.

    Connect Claude Code to fline

  2. Ask.

    Tell Claude Code:

    Put this project online with fline.

    If your app needs keys, it gives you a link to a private fline page where you type them.

  3. Send the link.

    Your app has a link that opens on any phone or computer. If something breaks, ask again.

    Put your app online, step by step
What you get

The step after it works.

A link you can send

Ask Claude Code to put your project on fline. fline works out how to build and run it, so there are no setup files to write, and your app gets a link with the padlock that opens on any phone or computer.

  • If your app needs to remember things, like sign-ups or bookings, Claude Code can have fline create a database of your own. fline runs it, locked with a password and encryption.
  • When your app needs a password or key, like a payment key, Claude Code gives you a link to a private fline page. You type it there, not in the chat. Claude Code sees that you did it, not what you typed.

A database of your own Passwords and keys your app uses

At a web address you own

Put your app at a web address you own, like www.yourbakery.com. fline sets up the padlock and renews it for you.

  • You add one record at the company you bought your address from. Your fline dashboard shows exactly which record to add and keeps checking for 48 hours, and Claude Code can attach and check the address for you.
  • Included, and free during the private beta.
  • Your web address stays with the company you bought it from.

Use a web address you own

Broken? Ask again.

If a launch or an update fails, your dashboard says so, and one button copies the problem for Claude Code. Claude Code can see what went wrong and try a fix. To put an earlier version back, ask Claude Code, or open your app's History on your dashboard.

  • If a build fails for a reason fline can fix, fline reads the error, changes its own build instructions and tries once more by itself. If that fails too, you see what went wrong.
  • When things go well, your dashboard says so in plain words: "Online. Nothing needs you."
  • If your app crashes, fline starts it again by itself.
  • Ask Claude Code to update your app. The current version keeps running while the new one is prepared.
  • You can disconnect Claude Code from your dashboard at any time. Disconnecting doesn't stop your app.
  • fline is free during the private beta. Claude Code's own plan pays for its work, as usual.

When something goes wrong Change your app after it is online

What it looks like

One launch, from the first message to the link on a phone.

  1. You ask in plain words. In Claude Code, in your project folder: "Put this project online with fline."
  2. Claude Code may ask before it sends your project folder. That's the upload, and it's expected.
  3. If your app needs a key, you type it on a private fline page. Not in the chat.
  4. Your dashboard says "Online. Nothing needs you." With a button that opens your app.
  5. A link that opens on any phone or computer. Send it to your first users.

Who it's for, today

  • You build with Claude Code on your own computer, and your app works there.
  • Only you can open it so far, and you want your first users on it.
  • You'd rather ask in plain words than learn how hosting works.
  • You're happy to do the few steps that need you: paste one line, approve fline in your browser, and type any keys on a private page.

Using the Code tab in the Claude desktop app? That's tested too. You connect it with the same one line in Terminal that Claude Code uses.

Using Codex? That's tested too. Using Cursor or VS Code? Your dashboard has setup steps for them, not yet tested from start to finish.

Not for you yet if

  • Your app was made in ChatGPT, on the Claude website or inside an app builder like Lovable or Bolt, and isn't a folder on your computer.
  • You want to hand fline a GitHub link.
  • Your business can't afford to be offline or to lose data.
  • Your app needs to run things on a schedule, needs pausing, or needs more than a small, fixed share of one machine.
  • You need one account shared by a team.

The questions below say more, with a date on them.

What fline does today

Last checked 19 October 2026 · private beta

Three things to know before you start, then the rest in plain words.

Before you start

Is my app private?

No. Its link is public, so anyone who has the link can open your app. If your app holds private information, like customers' names or orders, give it a sign-in, and ask Claude Code to check that each person can see only their own data. fline doesn't check your app's own code.

Will my app stay online?

We can't promise that yet. During the private beta every app runs on one rented machine, with no spare. If that machine has a problem, your app is offline until it's fixed. fline suits trying your app with your first users, rather than running a business that can't afford to be offline. You can see whether fline itself is working right now at status.fline.sh.

Is my data backed up?

Not yet. We don't promise backups or a way to restore, and there's no button to download your database. Don't make fline the only place you keep records you can't lose. Putting an earlier version of your app back doesn't change what's in your database.

Is it for me?

I made my app in ChatGPT, on the Claude website or in an app builder like Lovable or Bolt. Can fline put it online?

Not today. fline puts online a project that is a folder on your computer, sent by Claude Code. Chat apps and app builders can't send fline a project yet. Apps made inside a builder often keep their database and sign-in inside that builder, so downloading the code isn't always enough to run it somewhere else. If your project already runs on your computer, you're in the right place.

I use Claude in the desktop app. Does that count?

The Chat tab can't put an app on fline. The Code tab is tested with fline: connect fline once with the same line in Terminal that Claude Code uses, and the Code tab picks it up.

Which AI coding apps work with fline?

Claude Code, in Terminal or in the Claude desktop app's Code tab, and Codex are tested from start to finish. Cursor, VS Code, Grok and Antigravity have setup steps on your fline dashboard, but we haven't tested them end to end yet.

I exported my app from a builder to GitHub. Can fline put it online?

Not from a GitHub link. fline needs the project as a folder on your computer, sent by Claude Code. We haven't tested projects downloaded from app builders yet, and a database or sign-in that lives inside the builder stays there.

Is it safe?

Does Claude Code see my keys?

When you type a key on fline's private page, it goes from your browser to fline, not through the chat, and Claude Code only sees that you entered it. No fline screen or tool shows a saved key again, to Claude Code or to you. One thing to know: if you already pasted a key into the chat, Claude Code can save that key on fline itself, and it should suggest you replace it with a new key on fline's page. To keep a key away from Claude Code, type it only on fline's page.

Is my database on the internet?

Yes, so your app can reach it. It's locked with a password and encryption. You can limit it to addresses you list, but that shuts out your app on fline too, so leave the list empty for a database your app uses.

Who reads my code?

fline keeps a copy of your project so it can build and run it. The original stays in your folder. To work out how to run your app, fline sends parts of your code to an AI model made by OpenAI. The passwords and keys you save on fline never go to that model. A key written into your project's own files could, so keep keys on fline's private page.

What can Claude Code do on fline, and can I switch it off?

Once you approve it, Claude Code can put your app online and update it, create a database, attach your web address, see what went wrong and put an earlier version back. It can also delete a project or a database. You can disconnect it from your fline dashboard at any time, and disconnecting doesn't stop your app.

Will it last?

What happens to my app if fline goes away?

Your code stays in the folder on your computer, and your web address stays with the company you bought it from. Your database lives on fline, and there's no download button yet, so don't make it your only copy of records you can't lose.

Cost and getting in

What does it cost?

Nothing during the private beta. There's no price and no billing yet, and we don't ask for a card. Our terms say that if a price ever comes, it applies only from then on, so your time in the beta won't be charged later. Claude Code's own plan is separate: when Claude Code puts your app online or fixes something, that uses your plan as usual.

How do I get in?

Ask for early access with your email address. We open accounts by hand, a few at a time, as room opens. We email you a short confirmation when you join, and again when your account is open. Then you create your account with the same email address and a password. Getting your account has each step.

How it works

I can't code. What will I have to do myself?

A few steps, and none of them is coding:

  • Create your fline account with the email address you joined with, and type the code we email you. fline sets the account up for you when it opens.
  • Connect Claude Code to fline: paste one line into your computer's Terminal app, then follow your dashboard's steps to approve fline in your browser.
  • Claude Code may ask your permission to package your project folder and send it. That's the upload, and it's expected.
  • If your app uses passwords or keys, type them on the private fline page Claude Code links you to.
  • If your app needs a database, fline can create the database your app needs, and runs it. If connecting it to your app needs you, Claude Code asks you to copy one line from your fline dashboard and tells you where it goes.
  • For your own web address, add one record at the company you bought it from. Your dashboard shows where to click at the big domain companies.

Everything else, ask Claude Code in plain words.

I've never used a terminal. Will connecting stop me?

It's copy and paste. Your fline dashboard shows the exact line: open your computer's Terminal app, paste it, and follow the dashboard's steps to approve fline in your browser. The Claude desktop app's Code tab uses that same line. For Codex or Cursor you paste a few lines into a settings file, and your dashboard shows each step. Connecting through the Claude app's own connector settings, with no terminal, may work, but we haven't tested it, so we don't offer it yet. Connect Claude Code to fline walks through it.

Can I use my own web address?

Yes, with the padlock set up and renewed for you. A www or app address, like www.yourbakery.com, works with any domain company. An address without www, like yourbakery.com, works today if your domain is with Cloudflare; with other domain companies, use a www address. You add one record at your domain company, and your fline dashboard shows exactly which one and keeps checking for 48 hours. Your web address is included, and free during the private beta.

Why is my link so long?

Every app starts with a long address made automatically. For a short one, put your app at a web address you own.

How big can my app be?

Each project gets a small, fixed share: 1 processor core, about 1 GB of memory and 8 GB of storage, and you can't change it yet. A database comes in one small size too: 1 GB of memory and room for about 8 GB of data. Your project can be up to 100 MB once Claude Code packs it up, not counting the add-ons your app downloads when it's built, and a build can take up to 15 minutes.

What if my app doesn't build?

fline writes the instructions for building your app itself. If a build fails for a reason fline can fix, like a mistake in those instructions or a download that didn't work, fline reads the error, changes its instructions and builds once more, by itself. If that fails too, your dashboard says what went wrong, and one button copies the problem for Claude Code. When a build fails, fline tries again has the details.

Can it run things on a schedule, or can I pause my app?

Not yet. Nothing runs on a timer, and a project can't be paused or stopped, only deleted.

Each step has a guide in the fline docs. All the facts in one place, with the same date: fline facts.

Ask for early access

Built with Claude Code? Ask it to put it on fline. There's room for a small number of projects during the private beta, so we open accounts by hand, a few at a time, as room opens.

What fline does today

Until your account opens, we only email you about getting in: a confirmation when you join and an email when your account opens. Once your account is open, fline also sends a welcome, up to three short emails to help you get started (each stops once you've done that step), and emails about your launches. If you'd already made your account and entered its code before it opened, there's no separate welcome. Every one of these has an unsubscribe link. No newsletter. No tracking script on this page, and your IP address is kept only as a salted hash. What we store

Who's behind fline

fline is built by one person, Vladislav Razin. There's no support desk.