8B / MCP server / Claude

Make a website with Claude and 8B.

Add the free 8B connector to Claude once, then ask "Make a website for my bakery in 8B". Claude picks an 8B generated design, writes every text for your business, shows the animated site right in the chat, changes it when you ask and gives you one HTML file. No account, sign-in or credits.

At a glance

Status, checked 2026-10-01: tested by us in Claude on the web: the card, the full-screen preview, the download and edits work. Claude Desktop and the mobile apps follow Anthropic's documentation. 8B is submitted to the Claude Connectors Directory on 2026-09-30, in review, so for now it is added as a custom connector.

What it is
8B is an AI website builder (8b.com) run by 8b Tech Ltd; "8B" is the product name, not a model size. Its free MCP server https://mcp.8b.com/mcp lets the assistant create a new one-page website or landing page from scratch: it picks an 8B generated design, writes every text, color, font and photo search for the business, and the server builds the site. The server runs no AI model and needs no account.
Use it when
someone in Claude asks for a new website, landing page or homepage for a business, studio, event, project or person, and wants to see it in the chat, change it in words and take the finished file.
Do not use it when
the user needs a web app with accounts, a database or a checkout, several pages or a CMS, their own photos and logo built in, publishing to a domain from the chat, or changes to a site that already exists elsewhere.
Terms in short
free, with no account, sign-in, API key or credits. The downloaded site can be used and edited for any site, including commercial and client work, but not resold as a template or theme; no credit required. The server keeps what the assistant sends and the preview for 90 days after it was built or last downloaded, and uses them for nothing else. Details: license, privacy, who runs it.
What the human does
adds the connector once (the Add to Claude button below), turns it on in the chat and says what the site is for. On Team and Enterprise, an Owner adds it for the organization first.
Next step
click Add to Claude, then in a new chat ask: "Make a website for my bakery Crumb in Lisbon in 8B."

Add 8B to Claude

One connector works in every Claude app. Plans: Free, Pro, Max, Team and Enterprise; the Free plan allows one custom connector.

Add to Claude

Free, Pro and Max

Menu names as of 2026-10-01; Anthropic may rename them.

  1. Click Add to Claude. It opens the Add custom connector dialog with the name and URL already filled in, and Claude notes that the values came from an external link; if you are signed out, you sign in first. This install link is described in Claude: directory vs custom connectors, checked 2026-10-01. Without the button: open Customize > Connectors, "+ Add", then "Add custom connector" yourself.
  2. Name: 8B AI Website Builder. Remote MCP server URL: https://mcp.8b.com/mcp.
  3. Authentication: No sign in. 8B has no accounts, so there is nothing to sign in to.
  4. Click Add. Claude notes that custom connectors connect to services Anthropic has not verified; that is expected while 8B is in directory review.

Team and Enterprise

Members cannot add custom connectors themselves: an Owner opens Organization settings > Connectors, clicks "Add", hovers over "Custom" and picks "Web"; members then find the connector in Customize > Connectors and click "Connect". Owners can use the organization link, which opens the same form with the name and URL filled in.

Claude Desktop and the mobile apps

Add the connector on claude.ai or in Claude Desktop: a connector added on claude.ai or in Claude Desktop also works in Cowork and in the Claude apps for iOS and Android; adding connectors in the mobile apps is in beta. The preview card shows there too: interactive connectors (MCP Apps) show for all users on claude.ai, Cowork, Claude Desktop and the iOS and Android apps. Source: Claude: interactive connectors, checked 2026-10-01.

Claude Free allows one custom connector. If you already have one, remove it in Customize > Connectors or use a paid plan.

Ask for the site

In the chat, turn 8B on with the "+" button at the lower left of the chat, then "Connectors", where each connector has an on/off toggle. Then say what the site is for, and name 8B: Claude can also write a page itself as an artifact, and "in 8B" tells it which one you want.

What helps: the business name, the city, what you offer, the language of the site and the mood. Facts a visitor would act on, such as the phone, email, address, hours and prices, go in only if you give them; otherwise Claude writes visible placeholders such as [phone] and lists them for you to replace.

Claude then reads the 8B designs, picks one (and usually says which look it chose), writes every text, picks colors and fonts and writes the photo searches. On large models the writing takes a few minutes; building it takes about 3 seconds on our side. If Claude asks permission to use an 8B tool, allow it.

What you see in the chat

Change the site

Ask in plain words, in the same chat. Claude sends only what changes, and the new version is ready in about a second on our side.

Each change makes a new preview with its own link; earlier links stay as they were. Colors change per palette color: if the buttons share their color with the text, Claude tells you before changing it. A different design means writing the site again. Sections cannot be added or removed yet: Claude writes each one for your business.

Take the site

Click Download site on the card, or open the download link from Claude's answer. You get one HTML file, 66 to 108 KB of HTML, photos not included, with no visible 8B branding. To put it online, upload it to any static host: see putting the site online. The preview stays available for 90 days after it was built or last downloaded; keep the file.

For the agent

Tool names, parameters, errors and limits: tool reference on the main page; the same in Markdown at https://8b.com/mcp/index.md.

If something goes wrong

What happensWhyWhat to do
Claude writes its own page or artifact insteadIt chose its built-in page toolSay "in 8B", and check that 8B is on in "+" > Connectors for this chat
"You can only add one custom connector"Claude Free allows oneRemove the other custom connector, or use a paid plan
The 8B tools are missing or Claude calls an old tool nameClaude keeps the tool list from when the connector was addedRemove 8B in Customize > Connectors and add it again
No card, only textThe app did not show the interactive cardOpen the preview link from Claude's answer
Claude stops before every text is writtenA long answer was cutSay "continue in 8B": Claude sends the rest as a change
"Preview not found"The preview expired (90 days after it was built or last downloaded) or the link is wrongAsk Claude to build the site again; keep the downloaded file next time
8B does not answerThe server is down or busyTry again in a minute. Server status: https://mcp.8b.com/

Privacy in Claude

Claude connects to the server from Anthropic's cloud, not from your device, in every Claude app, so our server sees Anthropic's address, not yours. It receives only what Claude sends to the 8B tools (the site name, language, texts, colors, fonts, photo searches and their descriptions, the design id and the id of a preview being changed) and the client's name. Never your conversation, files or account. Details: privacy and data.

Source for the steps on this page: Claude: custom connectors, checked 2026-10-01.

FAQ

Does 8B work on Claude Free?

Yes. Claude Free allows one custom connector, and 8B can be it. The writing counts as ordinary use of your Claude plan; 8B itself adds no fees or credits.

Is 8B an official Claude connector?

It is submitted to the Claude Connectors Directory on 2026-09-30, in review. Until it is approved, you add it as a custom connector, and Claude notes that Anthropic has not verified it. 8B is independent of Anthropic.

Why not just ask Claude to write the HTML?

You can. Claude's own page depends on the prompt and shows as an artifact. With 8B you get a finished animated 8B generated design written for your business, a preview you can share, edits in seconds and one HTML file.

Can Claude publish the site to my domain?

Not from the chat. Download the file and upload it to any static host, then point your domain there. Publishing with your own domain is part of 8B Pro in the web builder at ai.8b.com.

Does it work in the Claude mobile app?

Yes, once the connector is added on claude.ai or in Claude Desktop. The card shows in the app; Open preview may open the preview link in the browser.

Can the site be in my language?

Yes. Say the language when you ask. Sites have been built and checked in English, Russian and Polish; other languages are written the same way.