Paper Minimal canvas product with crisp copy. Visit ↗
BYOB New inbox in every project
Website Builder With Custom Domain
A custom domain is how visitors remember and trust a site. BYOB lets you build the website on a BYOB address, then connect your own domain when the site is ready, without rearranging the project.
Runs on the stack you trust
Prompt to product
From one-line brief to finished app.
Compare the one-line brief with what BYOB ships. Real layout, data, and deploy status, editable from the same workspace.
TD
Team Tasks
Shared task tracking
Today4
Done11
Streak6d
Open live app ↗
Drag the handle. Or focus it and use the arrow keys.
Get inspired
Sites like this, live today.
Real sites that do it well. Build something like this with BYOB.
Fresh from the community
See what builders ship, or start from an example.
Live workspace
Code, chat, and preview in one place.
The workspace is built for repeated product work, not disposable demos. Every generated file stays inspectable, every change is visible, and every follow-up can target the exact part of the app you care about.
01 · EDITOR
Generated code, ready to edit.
Every file BYOB writes stays visible and editable. Follow-ups target the exact lines you care about instead of regenerating from scratch.
- Added lines highlighted the moment they land
Code
Act mode TodoPage.svelte
schema.ts
1
<script lang='ts'>2
type Task = { id: string; title: string; done: boolean
}3
let tasks = $state<Task[]>([])4
5
function toggleTask(id: string) {6
task.done = !task.done // just added by BYOB7
}8
</script> main · 0 problems Preview ready
02 · AI COMMAND
Plan, build, and refine in one chat.
Describe the outcome once. BYOB turns it into a build plan, implements it step by step, and keeps every change visible while you iterate.
- Build plan with live progress you can inspect
B BYOB AI
Chat Act
Your prompt
“Build a todo app for beginners”
Build plan
80%- Task list UI + empty state
- Add + toggle actions
- Progress summary…
Add due dates and filter by done…
03 · LIVE PREVIEW
See every change the second it lands.
The preview updates as BYOB works, with deploy status attached, so the path from edit to production stays inspectable.
- Real app state, not a static mockup
Live preview
/TD
Team Tasks
Shared task tracking
Progress 2 of 3 done
- Wireframe landing page
- Task list component
- Responsive polish + QA
Ask BYOB to refine
Deployed · SvelteKit · SSL on
Prompt to app
From first prompt to a workspace you can ship.
Start conversationally, approve the shape, let Tool Mode implement, then refine and deploy from the same workspace.
- 01 Describe the product Start with the outcome, audience, and any constraints. BYOB turns the idea into a practical build plan.
- 02 Shape the UX Review the proposed flows, screens, data needs, and visual direction before code starts moving.
- 03 Generate the app Tool Mode writes SvelteKit code, connects integrations, and keeps each change visible in preview.
- 04 Test and refine Ask for edits, roll back when needed, run checks, and keep the project editable instead of disposable.
- 05 Deploy Ship the finished app, connect domains, and keep iterating from the same workspace.
Agent and backend
Code with your agent, ship with a real backend.
Connect Codex, Claude Code, or Antigravity to your project, then store data and ship to production without leaving the workspace.
- Approve project access from BYOB
- Installs the byob command
- Preview, deploy, git diff, DNS, credits, and code tools
npmnpx -y byob-cli codex installApprove only the projects your agent can touch, then read context, edit files, inspect diffs, test previews, and roll back from your terminal.
- 1
- prompt to start
- 3
- live panes
- 24/7
- edge preview
Loved by builders
Rated 4.9/5 by developers and founders using BYOB to move from idea to shipped product.
Built for shipping
The parts that usually slow you down are already here.
BYOB handles product planning, implementation, preview, testing, database work, and deployment from one focused interface, with coding-agent access and production analytics when you want to keep working from your own terminal.
This part is hands-on. The cards drift until you touch them. Drag to rearrange, or press and hold one to feel it push back.
Agent integrations
Give Codex, Claude Code, or Antigravity scoped access through BYOB CLI or Agent MCP. Your agent reads context, edits code, tests previews, and deploys from your terminal.
Git history and diffs
Every change lands as a commit. Inspect history, compare diffs, and see exactly what changed since the last deploy.
Inbox in every project
Every project ships with an inbox. Collect messages, leads, and feedback from your app without wiring a third party.
Email sending built in
Send magic links, OTP codes, and transactional mail from your own sender address. Resend-backed, no SMTP setup.
Google and magic-link login
Offer Continue with Google plus passwordless email codes. Sessions and callbacks are handled.
Custom domains and SSL
Point your domain at BYOB with guided DNS checks. Certificates are automatic.
Visual editing
Click any element in the live preview and describe the change. Copy, spacing, color, behavior.
AI testing agent
Run full-site or feature checks and get implementation-level feedback you can apply in one step.
Version rollback
Step between saved states or redeploy a known commit when an experiment goes sideways.
One-click deploy
Builds publish to production hosting in one step. Deploys can auto-save the project state first.
Deployment analytics
Worker traffic, errors, CPU timing, subrequests, and custom-domain status from the workspace.
Supabase aware
Connect Supabase and BYOB reads schemas, drafts migrations, and generates types that match your app.
Team collaboration
Invite people in and keep sessions coordinated so work never overwrites work.
- Vision inputs
- Voice coding
- Project templates
- SEO-ready output
- Context tracking
- Model lock
Simple pricing
Start with credits, upgrade when usage is steady.
Pay as you go when you are exploring. Move to Pro or Max when BYOB becomes part of your regular build workflow.
Pay as you go
$0
$1 = 100 credits
Pro
$25
2,000+ credits/mo
Max
$79
8,000+ credits/mo
Live estimator
What will your app cost?
Try the cost calculator. Drag the pages slider, toggle the options, and watch the agency quote vs BYOB update instantly.
Open full cost calculator →Number of pages: 5
Traditional agency estimate
$5,750 upfront
Yearly maintenance
~$1,150 / year
BYOB estimate
~$45 in credits
BYOB builds the same site from one prompt and hosts it on the edge. Planning estimates, not quotes.
See BYOB plansView full pricing
Need white-label and SSO? Talk to us →
A website builder with domain support lets you attach a branded address to your site. BYOB publishes projects to a BYOB URL immediately and supports custom domains on paid plans, handling the connection as part of the same publishing workflow rather than a separate setup.
Subdomain first, custom domain later
You do not need to buy a domain before you start building. BYOB gives every project a shareable BYOB URL, which is perfect for previewing, gathering feedback, and testing on real devices. When the site is ready for customers, connect a custom domain on a paid plan. Building first keeps the domain decision from blocking progress. You can always point a domain at a project once the content, not the configuration, is settled.
Choosing a domain name
A domain should be easy to say, type, and remember, and ideally match your brand or category. Shorter is usually better, and a common extension such as.com builds familiarity, though endings like.studio or.shop can work when they reinforce the name. Check availability before you brand everything around it, and avoid names that are easy to misspell. Say it aloud and type it without looking to catch awkward spellings.
How the domain connection works
Custom domains involve DNS records and certificates, which are the parts most people find intimidating. BYOB treats the domain as part of the publishing workflow, so the project is published and then associated with your address. You supply the domain and confirm the settings; you are not assembling a publishing stack from scratch just to make it load. The mechanics are handled behind the publishing step, so the task becomes confirming settings rather than writing records from memory.
Secure by default
Modern browsers and search engines expect HTTPS, and visitors see warnings when it is missing. Linking a domain through the publishing workflow includes securing the connection, so your address serves over an encrypted protocol rather than plain HTTP. That protects form submissions and improves trust, without you manually issuing or renewing certificates. That protection matters most on pages where people type personal details into a form.
Life after the domain is live
Connecting a domain is not the finish line. You keep editing the same project, and updates publish to the live address as you make them. If the business is renamed or expands, the domain can be updated or additional ones added. The branded address and the codebase stay aligned, which keeps long-term maintenance simple instead of fragmented. This is why connecting a domain early still leaves room to change direction later.
FAQ
Frequently Asked Questions
Does BYOB include a free domain?
No. Building and previewing is free, but custom domains are a paid feature. You start on a BYOB URL.
Can I use a domain I already own?
Yes. You connect an existing domain as part of the publishing workflow.
Is HTTPS included?
Yes. Domains are served over a secure connection, so visitors are not shown warning pages.
Can I change my domain later?
Yes. You can update or add domains and keep publishing to the same project.
Build the first version today.
Start with one clear prompt. BYOB will help turn it into a product you can inspect, edit, test, and ship.