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Describe your website in a conversation with ChatGPT or Claude. The assistant builds it with Fimo, shows you a live preview, and puts it online when you say so. You don’t need to install anything or write code.

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Before you start

You need:
  • A Fimo account. Sign up at fimo.ai if you don’t have one.
  • A ChatGPT or Claude account.

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Connect Fimo

You do this once. Afterwards, Fimo is available in any new conversation.
1

Open Plugins

In the ChatGPT sidebar, select Plugins. Select + next to the search box, then Create custom MCP server.
2

Add Fimo

In the New plugin window, choose Create MCP app and fill in:
  • Name: Fimo
  • Server URL: https://api.fimo.ai/api/mcp
  • Authentication: OAuth
Check I understand and want to continue, then choose Create.If ChatGPT says custom servers are turned off, open Settings, then Security and login, and turn on Developer mode.
3

Sign in to Fimo

ChatGPT opens a Fimo sign-in page. Sign in, then choose Allow. Keep every access option checked so the assistant can build and publish your site.
4

Use Fimo in a conversation

Start a new conversation, select +, and choose Fimo.

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Create your site

Tell the assistant what you want, in your own words. For example:
  • “Build a website for my bakery in Lyon. We sell bread and pastries and take orders for events.”
  • “Make a portfolio site for my photography, with a gallery and a contact form.”
  • “Rebuild my current website, www.example.com, with a fresher look.”
The assistant may ask a few questions first: the site’s name, its purpose, the pages you need, and the look you like. Share any real content you already have, such as your opening hours, prices, or a description of your business. The assistant won’t make those up.

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Look at your site

When the first version is ready, the assistant gives you a preview link. Open it to see the site as visitors will. In ChatGPT, you can also open Site preview from the side panel to watch the site change as you talk. Ask for any change, the same way you would ask a person:
  • “Make the header darker and the buttons orange.”
  • “Add an About page with a photo of the team.”
  • “Translate the site into French.”

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Put your site online

When you are happy with it, say “Publish my site”. The assistant asks you to confirm, then returns your public address. To keep improving the site, come back to any conversation and ask for more changes. Publish again when you want visitors to see them.

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Edit the site yourself

Your site also appears in Fimo Studio, where you can change text and images by clicking on them, see who visits, and connect your own domain name. Changes you make in Studio and changes the assistant makes stay in sync.

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If something goes wrong

Check that Fimo is turned on for the conversation, then ask again and mention Fimo: “Use Fimo to build my site.”
You may have approved read-only access. Remove the Fimo connector, add it again, and keep every access option checked when you choose Allow.
Ask the assistant to invite a teammate or connect a domain name you already own. To buy a new domain name, use Fimo Studio.
Ask the assistant to “send a report to Fimo support” and describe the problem. It shows you the message before sending it.

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What’s next

Fimo Studio

Edit your site by clicking on it.

Custom domains

Use your own web address.

For developers

See every tool the Fimo MCP server provides.

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Site knowledge

Before site recommendations, planning, design, copy, or code work, agents should read shared site knowledge. Fimo skills include this prerequisite; MCP clients use knowledge_get with the site ID. Empty knowledge does not block work. Updates require an explicit request and permission.