Weave websites that rank.

Four AI assistants scored a site built with Croftweaver

The Builder Lab at GenAI Wednesday gave four AI assistants the same prompt about genai-wednesday.de on 20 August 2026. SEO is how well Google can find and read a site. GEO, short for generative engine optimization, is how well AI assistants such as ChatGPT, Perplexity or Gemini can read and quote it. GEO has no official scorer, and the SEO scores here are the assistants' own opinions too, not a Google metric. They are not rankings, they vary from run to run, and they do not show that an assistant would recommend the site. The site belongs to the maintainer of Croftweaver.

Scores out of 10, as the Builder Lab shows them (read on 8 October 2026). Gemini (Antigravity) answers out of 100 and the Lab shows it out of 10. The Lab warns that scores are not comparable between assistants, so read the average as a rough guide. GEO ranges from 6.5 to 9.2.

Try it on your own site

Paste this into your own AI assistant and replace the part in brackets with your site's address. Your scores will differ from these: they are opinions. The Lab's own prompt is on More proof.

Score genai-wednesday.de for SEO and GEO, with one sentence of reason for each score. Then do the same for [your site's address].

More proof covers Google's PageSpeed Insights for three sites and how the same four assistants score trust. One site in depth has its clicks from Google and a count of how often assistants name it.

Every change waits on someone else

Many sites start from an old page nobody dares to touch, or from nothing at all. Every update means asking someone else: a brief, a wait, often a bill. So changes pile up, and the site falls behind.

The work that gets a site found is the first to go. A description goes missing, a link breaks, a share card shows the wrong picture, and nothing tells you.

Croftweaver takes the other route: you and your assistant make the changes, the search and AI work is done by default, and the tests check it by default. Why build for search and AI visibility makes the full case, for the person who decides.

Three steps to a site people can find

1. DescribeSay new website to your assistant and answer its questions. It works out what the site says before it writes a word.
2. Build and checkYour assistant builds the pages with the search and AI work done by default, and 12 test suites check every change by default.
3. Publish and keep improvingPublish on hosting you control, such as Cloudflare's free plan. Once you connect Google Search Console, your own data points to the next edit, week by week.

Rebuilding an old site? Tell your assistant what the old site says. There is no automatic import yet; the roadmap says what is missing.

What changes for you

A change, start to finish. You tell your assistant: make the opening line of the About page shorter. It edits the page, the test suites check the change, and you publish it yourself. There is no brief to write and no one to wait for.

What Croftweaver is, and what people ask

Croftweaver is a free, open-source suite of website skills for AI coding assistants. It turns an assistant such as Claude Code into a careful website builder: fast, accessible Astro sites, built to rank on Google and show up in AI answers, in a repository you own.

The search and AI work is the part that gets skipped when a site has to go live fast. Croftweaver does that work by default, and by default the tests check it. The proof is above. More proof and one site in depth are measured and dated.

Do I need to code?

Not to start. You work with your assistant in plain language, and the starter prompt asks it to explain every command and to install a tool only when the site needs it.

Will it rank my site?

Croftweaver builds in the search and AI basics and, by default, tests them. It cannot promise a ranking: that depends on your content and your competition.

What does it cost?

Croftweaver itself is free and MIT-licensed, and a GitHub account and a Cloudflare account are free to open. Your domain, your hosting and your AI assistant can still cost money, and so can the optional weekly AI check.

Built in from the first build, checked on every change

You do not switch any of this on. The skills build it into every page:

• Titles and descriptions kept within set length limits.
• Structured data (schema.org JSON-LD) on every page, so a search engine can tell what the page is.
• An llms.txt file that maps your site for AI assistants.
• A sitemap, clean addresses and internal links that all resolve.
• A share card for every page, sized so messengers show a proper preview.
• Accessible markup and colours, in light and dark.

Every Croftweaver site also carries its own tests: 12 test suites. By default they run before every push, and again on GitHub for every pull request. A change that breaks a rule fails there, so by default it does not reach your visitors.

A green run proves that the tests passed, nothing more. The positioning test, for example, proves that this page carries its key term in its title, description and opening, not that the positioning is good. The test gate, suite by suite, says what each suite checks and what a pass does not prove. How the positioning itself is worked out, before any copy: Positioning first.

After launch, search data drives the next edit

A launch is the start. Once you connect Google Search Console and it has data on your site, the skills read it and point at the two or three edits most worth making this week:

• Searches where you sit just below the first page of results.
• Pages that people see in the results but rarely click.
• An optional weekly check, run with your own API keys, that asks AI assistants the questions your customers ask and counts how often they name you.

The skills cover the whole life of a site, and every edit goes back through the same tests:

1. BuildBrief, positioning, content, design.
2. VerifyThe test suites, then a two-pass review.
3. LaunchPublish, and register with Search Console.
4. GrowRead the data, make the edits, weekly.

From Grow, every edit returns to Verify.

The site is yours

Your code sits in your repository, your domain is in your name, and your pages are static files that any host can serve. Croftweaver is MIT-licensed. It has no account and no subscription, and nothing runs on our servers.

Install guides cover Claude Code, Codex and Antigravity.

A croft is a small farm in the Scottish Highlands, worked by the family that lives on it: a modest piece of ground that feeds the people who tend it. Croftweaver offers the same deal for the web, on ground you own. The weaver is your AI assistant. The plot stays yours.

A good first AI project, alone or with your team

AI stops being abstract when it works on your own site. You know what it should say, you see each change take shape, and you decide what stays. In my experience it is a real learning curve, and a happy one. Questions along the way? I am glad to help. Write to hello [at] croftweaver [dot] com.

Daniel Melter, maintainer of Croftweaver

Where Croftweaver fits, and where it does not

A contact form or one live widget is fine: the output supports a single serverless function when a site truly needs one.

Croftweaver and its alternatives says when another kind of tool is the better choice, and the roadmap says what is still missing.

Quickstart

The easy way is one prompt. The starter prompt asks your assistant to do the typing, explain every command and install a tool only when the site needs it.

1. Install an AI coding assistant, such as Claude Code, and open it. You also need a free GitHub account and a computer (what you need).
2. Paste the starter prompt and send it.
3. Answer its questions. It builds the site from your answers.

Or install by hand

1. Clone the repository and run the installer. This one is for Claude Code:

git clone https://github.com/karero/croftweaver.git
cd croftweaver && ./scripts/install.sh

2. Restart your assistant, then open it in a new, empty folder.
3. Say: new website. The interview and the pipeline take it from there.

The full quickstart has the starter prompt in full, the installers for Codex and Antigravity, and the six questions the assistant asks.