# How to build a website with Antigravity and publish it to your own domain Add PageHub to Antigravity's MCP settings, then describe the site you want. Antigravity builds it, checks it with screenshots, and puts it on your domain. You end up with a real site that anyone can edit visually, not a folder of code you still have to host. **What you need:** Antigravity (the agy CLI or the app), a free PageHub account, and a domain if you want one. Without a domain, the site publishes to a pagehub.dev subdomain. Coming from Gemini CLI? This is the guide to follow now. ## How it works PageHub runs an MCP server, which is a set of tools an AI agent can call. Antigravity supports remote MCP servers over HTTP with OAuth sign-in, so once you add PageHub, Antigravity can call tools like `create_site`, `set_theme`, `screenshot_site`, and `publish_site` for you. The site lives in PageHub, not in your project folder. PageHub also sends its own build rules to Antigravity when it connects, so you don't paste any instructions. ## Step 1: Create a free PageHub account Go to pagehub.dev/signin and enter your email. You'll get a magic link and a 6-digit code. Use either one to sign in. The free plan has no credit card and no time limit. It includes 1 published site, 20 pages per site, and hosting with SSL, and you can connect 1 domain you own. Connecting Antigravity works on every plan. ## Step 2: Add the PageHub MCP server to Antigravity Open `~/.gemini/config/mcp_config.json`, or create it if it isn't there, and add PageHub: ```json { "mcpServers": { "PageHub": { "serverUrl": "https://pagehub.dev/api/mcp" } } } ``` If the file already lists other servers, add the `PageHub` entry inside the `mcpServers` object you already have. Use `serverUrl` exactly. Antigravity doesn't accept `url` or `httpUrl` here. This file is global, so PageHub is there in every project. To add it to one project only, put the same entry in `.agents/mcp_config.json` in that project instead. Now start `agy` and type `/mcp` to open the MCP Manager. When PageHub asks you to sign in, a PageHub page opens in your browser. Sign in with your email, then click **Approve** on the Authorize PageHub screen. There's no API key to paste. PageHub should show as active in the MCP Manager. Then ask: "List my PageHub sites." ## Step 3: Prompt Antigravity to build the site Start agy in a terminal, or open a chat in the Antigravity app, and describe the site. Say who it's for, which pages you want, and what visitors should do. Real details (hours, prices, your email) beat placeholders. Swap the bracketed parts in these prompts for your own. A local business site: ```text Use PageHub to build a website for [business name], a [type of business] in [city]. Pages: Home, Services (with prices), and Contact. Hours: [days and times]. Address: [address]. Phone: [phone]. Add a contact form that asks for name, email, and what they need. Keep the look [warm and simple / bold / minimal]. Screenshot it on desktop and mobile before you tell me it's done. Don't publish yet. ``` A portfolio: ```text Use PageHub to create a portfolio site for me. I'm a [job title] in [city]. Home page: a short intro, then a grid of 6 projects, each with a title, a one-line summary, and an image. Add an About page and a contact section with my email, [you@example.com]. Clean layout with lots of white space. Use stock photos for now and I'll swap in my own. Show me screenshots before publishing. ``` A landing page for a side project: ```text Use PageHub to make a one-page site for my side project, [name]: [one sentence on what it does]. Sections: a hero with an email sign-up form, 3 features, a short FAQ, and a footer. Suggest 3 color palettes and let me pick one before you build. When it's built, run an SEO check and fix what it finds. Don't publish until I say so. ``` From there, Antigravity looks up PageHub's templates and section blocks, creates the site with `create_site`, sets colors and fonts with `set_theme`, adds sections, and finds stock photos with `find_image`. Then it checks its work with `screenshot_site`. ## Step 4: Review the draft and edit it yourself Everything Antigravity builds lands in a draft. Nobody else sees it until you publish. Ask for screenshots at any point. `screenshot_site` takes a real browser screenshot of the draft, one section at a time if you like, and at phone width (390 pixels). Antigravity reads the screenshots itself and fixes what it sees. To look for yourself, open the site in your PageHub dashboard. To edit by hand, open your PageHub dashboard, pick the site, and click **Design**. That opens the visual editor. Drag sections around, change colors and fonts, and rewrite text. Antigravity reads the same draft, so it sees your edits the next time you ask for changes. Before you publish, ask Antigravity to run `audit_seo` and `audit_accessibility` and fix what they find. ## Step 5: Publish and connect your domain Ask Antigravity: "Connect [example.com] to this site and tell me the DNS records to add." It calls `set_domain`, which attaches the domain and returns the records. Add them where you bought the domain: - The bare domain (example.com) gets an **A** record at `@`. - A subdomain such as `www` gets a **CNAME** record. - Sometimes there's also a **TXT** record, to prove you own the domain. Copy each value exactly as Antigravity gives it to you. The values are specific to your site, so a value from another guide won't work. PageHub sets up both example.com and www.example.com, and by default sends www visitors to the bare domain. SSL certificates are issued automatically and can take a few minutes once DNS is in place. Then ask: "Is my domain working yet?" Antigravity checks with `get_domain_status`. Connecting a domain doesn't publish the site, so finish with: "Publish the site." That calls `publish_site`, and the site is live. Rather click? The Domains page for your site in the PageHub dashboard shows the same records. ## Step 6: Make changes later You have two ways in, and both edit the same draft. - **From Antigravity:** ask, for example, "In my PageHub site [name], add a reviews section under Services." Check the screenshot, then say "publish." - **From the editor:** open the site, click **Design**, make your changes, and publish. If a change goes wrong, the site's History page lets you restore an earlier version of the whole site or one page. The free plan keeps 15 versions. ## Other ways to ship from Antigravity PageHub is one way to publish a website from Antigravity. You can also have Antigravity write the site as code in your project, then deploy the code yourself. That's how most people deploy a website from Antigravity today. - **Vercel or Netlify:** connect your Git repository, and each push builds and deploys the site. You add your domain in their dashboard and set DNS at your registrar. A good fit when the site is really an app with its own code. - **GitHub Pages:** serves static files straight from a repository. A good fit for simple static sites and project docs. The tradeoff: you own every line and can build anything. You also handle Git, builds, and DNS yourself, and every text change is a code change. Someone who doesn't use Antigravity can't easily update it. PageHub fits when you want a site that people can edit visually. It isn't the right tool for custom app logic. ## Troubleshooting ### PageHub doesn't connect Type `/mcp` to open the MCP Manager. It shows each server's status and its connection log. - **Not listed:** check the file is at `~/.gemini/config/mcp_config.json` and is valid JSON, then reload from the MCP Manager. - **Disconnected:** check the entry uses `serverUrl` and the URL is exactly `https://pagehub.dev/api/mcp`. ### Sign-in doesn't finish Antigravity signs you in through a browser on the same computer, so it won't work over SSH or in a remote container. In the browser window, sign in with the email link or the 6-digit code, then click **Approve**. If the browser sign-in still won't complete, use an API key instead. Create one at pagehub.dev/dashboard/api-key and change PageHub's entry to this, with your key in place of `ph_your_key_here`: ```json { "mcpServers": { "PageHub": { "serverUrl": "https://pagehub.dev/api/mcp", "headers": { "Authorization": "Bearer ph_your_key_here" } } } } ``` ### Antigravity says a tool isn't available If you edited the file while Antigravity was running, reload from the MCP Manager, then check PageHub's tools are listed. If you see a rate-limit error, wait a minute. The server allows 120 requests per minute for each sign-in. ### The domain isn't working - Compare each record at your registrar with what Antigravity gave you, character for character. A wrong value fails the same way slow DNS does. - The bare domain needs an A record. It can't be a CNAME. - If Antigravity gave you a TXT record, add it as well as the others. - DNS changes can take a while to spread. Ask Antigravity to check the domain again later. - If the domain is already attached to another Vercel project, remove it there first, then ask Antigravity to try again. - Each site takes 1 domain, plus its www version. Want the full tool list and other clients? See the MCP server docs at pagehub.dev/developers/mcp, or compare plans at pagehub.dev/pricing. ## FAQ ### Can Antigravity host a website? No. Antigravity writes and runs code, so the site has to be hosted somewhere else. In this guide PageHub hosts it, with SSL included. If you have Antigravity write the site as code instead, you deploy that code to a host such as Vercel, Netlify, or GitHub Pages. ### I used Gemini CLI. Do I need this guide? If you signed in to Gemini CLI with a free, Google AI Pro, or Ultra Google account, yes. Google stopped serving those sign-ins on June 18, 2026 and moved them to Antigravity. If you use Gemini CLI with a paid API key or a company license, the Gemini CLI guide still works. ### Is it free? PageHub's free plan costs $0 with no credit card and no time limit. It includes 1 published site, 20 pages per site, and hosting with SSL, and you can connect 1 domain you own. Pro is $7 a month per site ($5 billed annually) and raises the limit to 300 pages. You buy the domain itself from a registrar. ### Do I need to know how to code? No. You describe the site in plain words, and Antigravity calls PageHub's tools to build it. No code files are written to your project. The technical steps are adding one entry to a settings file and adding DNS records at your domain registrar, and Antigravity tells you exactly which records to add. ### Does this put any files in my project? Only if you choose to. The global settings file, ~/.gemini/config/mcp_config.json, lives in your home folder. If you add PageHub to .agents/mcp_config.json instead, that file sits in your project. The site itself is stored in PageHub. You can export it as static HTML on any plan. ### Can someone who doesn't use Antigravity edit the site? Yes. Every PageHub site opens in a visual editor where you drag sections, change colors and fonts, and rewrite text. Antigravity reads the same draft, so it sees those edits the next time you ask for changes. You can invite 1 teammate per site on Free, and unlimited on Pro and up. ### Is it safe to let Antigravity edit my site? Every change Antigravity makes goes to a private draft, and visitors keep seeing the published version until someone publishes. If a change goes wrong, restore an earlier version from the site's History page. ### Are sites built this way good for SEO? PageHub renders pages to HTML on the server, and each custom domain gets its own sitemap.xml and robots.txt. Ask Antigravity to run audit_seo, which checks titles, descriptions, headings, image alt text, and link text, then fix what it finds. --- Google Antigravity and Gemini are trademarks of Google LLC. PageHub isn't affiliated with or endorsed by Google.