Web pages and sites
A page for your business, an event or a launch, live at its own URL.
“Write a landing page for my bakery and deploy it to a live URL.”
§ 00Integrations · ChatGPT
Deploy an app from ChatGPT to a live URL
Add Server4Agent to ChatGPT once. Then ask for a web page, an app, an API or a bot in plain words: ChatGPT writes it on a server in your account, starts it, and replies with a link that works. The app keeps running after the chat ends.
§ 01Setup
Connect it in four steps
A one-time setup. After it, every ChatGPT chat can end in a live app.
Step 01
Create your Server4Agent account
Sign up on server4agent.com. There is no API key to make: ChatGPT signs in with your account in step 3.
Step 02
Add Server4Agent in ChatGPT
On ChatGPT's Plugins page, click +, then Add custom MCP server. Name it Server4Agent, paste the server URL below as the server URL, and set Authentication to OAuth.
Step 03
Sign in and authorize
Accept ChatGPT's warning and create the plugin. ChatGPT opens a Server4Agent page: click Authorize. If ChatGPT lists the plugin as not installed yet, install it. ChatGPT can now reach the servers and projects on your account, and nothing else.
Step 04
Ask for what you want built
In a new chat, type @ and pick Server4Agent, then describe the app in plain words. ChatGPT writes it on your server, starts it, and replies with its URL.
Server URL for step 2
text
https://mcp.server4agent.comNot seeing Add custom MCP server? Turn on developer mode in ChatGPT's settings first.
§ 02What you can build
Ask the way you would ask a colleague
ChatGPT plans it, writes it, runs it on your server and hands back the URL. These are real asks you can paste into a chat.
APIs
A small service your other tools can call, running on your server.
“Write a small API that turns a CSV upload into JSON, run it on my server and give me the URL.”
Scheduled jobs
A script that runs on a schedule and keeps going after the chat ends.
“Write a script that checks our website every hour, run it on my server on a schedule, and log when it is down.”
Apps, tools and bots
Dashboards, upload forms, trackers and bots that stay up, because they run on a server rather than in the conversation.
“Build a page where my team can report an equipment issue with a photo, and give me a list of every report.”
§ 03Built for handing over
More than code in a chat
Code pasted into a conversation still needs somewhere to run. Here it runs on a server you own, with limits you set.
Private until you publish
Every project starts private. It answers at its URL only once you ask ChatGPT to deploy it, and you can share it with everyone, your team only, or behind a password.
Keeps running after the chat
Your app runs on a server in your account (small, medium or large), so it stays up when the conversation ends. Come back in any chat to change it.
Spending has a ceiling
An account-wide budget cap stops agent spending at the limit you set. ChatGPT writing and running the code itself does not draw on your AI budget.
Yours to take over
Every project is a git repo an engineer can open in browser VS Code, or export as a bundle and move. Nothing has to be rebuilt.
§ 04FAQ
Deploying from ChatGPT, answered
Can ChatGPT deploy an app on its own?
Not on its own. ChatGPT can write code, but it has nowhere to run it. Connected to Server4Agent, it gets a server: it writes the files, starts the app and publishes it at a live URL, all from the chat.
Do I need to know how to code?
No. You describe what you want and ChatGPT does the building. You see code only if you ask for it.
Where does my app live?
At its own address on apps.server4agent.com, served from a server in your Server4Agent account. The address stays the same when you change the app or switch it between private and public.
Is my app public as soon as it is built?
No. Every project starts private. It goes live when you ask ChatGPT to deploy it, and you can make it private again, or share it with your team only or behind a password.
I already have code ChatGPT wrote. Can Server4Agent host it?
Yes. Ask ChatGPT to put the code in a new Server4Agent project and deploy it. If the code is already in a git repository, a project can start from the repository instead.
What about API keys my app needs?
Ask ChatGPT to save them as secrets. Secret values are write-only, so no tool ever shows them again, and your app reads them as environment variables.
Which ChatGPT plans can add it?
Adding a custom MCP server is a ChatGPT feature, and OpenAI decides which plans and workspaces have it. If you do not see Add custom MCP server, turn on developer mode in ChatGPT's settings. In a work workspace, an admin may need to allow it.
Is there a free plan?
Yes. The Free plan is $0 a month with 1 small server, 1 live app and $2 of trial AI credits, and it stops at its limits rather than billing you. Paid plans add servers, apps and teammates.
Your next chat can end in a live app.
Create your account, add Server4Agent in ChatGPT, and ask for the thing you have been meaning to build.