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What you can do with Builder

AI Builder is an open-source, Apache 2.0 licensed web app where you describe a website or app in plain language and the AI builds, previews, and publishes it.

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HeyPuter/builder on GitHub

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What do you want to do?

4 use cases

  • Build a website from a plain-language description

    Describe a site in chat, watch the live preview update, and publish it to a public URL.

    View prompt
    Using the HeyPuter/builder repo's live demo at https://builder.puter.com/, describe a one-page website for <target project> in plain language, iterate on it in the live preview, and publish it. Expected output: a public URL for the published site. Verify that the URL loads and shows the content described.

  • Start from a template and adapt it to your needs

    Copy a finished app or site into your own account, then describe the changes you want.

    View prompt
    Using the HeyPuter/builder live demo at https://builder.puter.com/, copy a template that fits <target project> into a new project, then request changes that match its purpose. Expected output: an edited project copy in your account. Verify that the original template is unchanged and the copy shows your requested changes in the live preview.

  • Let the AI use your other services via MCP

    Connect a remote MCP server so the AI can call its tools while it builds your project.

    View prompt
    Using the HeyPuter/builder live demo at https://builder.puter.com/, connect the remote MCP server at <target server URL> and ask the AI to use one of its tools to update <target project>. Expected output: a project change that uses the tool's result. Verify that the tool call result appears in the live preview and that the connection was made to the URL you provided.

  • Run AI Builder locally and fork it to customize

    Clone the repo, install dependencies, start the dev server, and change the Builder for your own use.

    View prompt
    Clone the HeyPuter/builder repo, run npm install and npm run dev, then change <target file or feature> to add a small customization. Expected output: the builder running locally with your change visible. Verify that the dev server starts without errors and the change appears after reloading the page.

How to use Builder

  1. Check you have what it needs: A web browser for the live demo at https://builder.puter.com/; Git, Node.js, and npm for running the repo locally; A project idea described in plain language.
  2. Open HeyPuter/builder on GitHub and read the README and license.
  3. Open https://builder.puter.com/ in your browser.
  4. Describe the website you want in plain language in the chat.
  5. Check the live preview and ask for changes until the site looks right.
  6. Publish the project to a public URL when you are ready to share it.

These steps come from our top use case, Build a website from a plain-language description, which also has a copy-paste agent prompt.

Builder alternatives · Best AI repos for Software and DevOps

About this repo

  • Who it is forNon-developers who want a working site or app from a description, and developers who want a forkable AI app builder to customize.
  • Why it is hot
  • LanguageJavaScript
  • Sourcegithub.com/HeyPuter/builder · Back to Hot repos

Requirements

  • A web browser for the live demo at https://builder.puter.com/
  • Git, Node.js, and npm for running the repo locally
  • A project idea described in plain language
  • For MCP connections: the URL of a remote MCP server you want the AI to use
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Questions about Builder

What is Builder?

AI Builder is an open-source, Apache 2.0 licensed web app where you describe a website or app in plain language and the AI builds, previews, and publishes it. It is an open-source project on GitHub: https://github.com/HeyPuter/builder.

Who is Builder for?

Non-developers who want a working site or app from a description, and developers who want a forkable AI app builder to customize.

What can I do with Builder?

4 use cases so far, for example: Build a website from a plain-language description; Start from a template and adapt it to your needs; Let the AI use your other services via MCP. Each has steps and a copy-paste agent prompt.

What do I need to run Builder?

A web browser for the live demo at https://builder.puter.com/; Git, Node.js, and npm for running the repo locally; A project idea described in plain language; For MCP connections: the URL of a remote MCP server you want the AI to use.

What are alternatives to Builder?

Other hot AI repos in Software and DevOps: Harness2, iFixAi, Orca, Diagram Design, AI Memory.

Is Builder safe to run?

Deduped does not own, audit or vouch for it. Read the README and license, run it on your own systems first and review every command before you run it.