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BYOB New inbox in every project

AI Code Editor

An AI code editor should shorten the distance between a clear request and a correct edit. BYOB applies AI changes to the actual files in your SvelteKit project, shows you what moved, and leaves manual editing available for the parts that need a human hand.

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

Online
Today4
Done11
Streak6d
Open live app ↗
Prompt Product

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.

Postcards website
Postcards Email builder with clear template previews. Visit ↗
#paid website
#paid Creator marketplace with social proof up front. Visit ↗
Config website
Config Hardware-team page with direct, plain copy. Visit ↗
observIQ website
observIQ Telemetry product with a technical hero. Visit ↗
Miro website
Miro Collaborative whiteboard with an inviting hero. Visit ↗
Vooma website
Vooma Logistics AI with a clear industry pitch. Visit ↗

Fresh from the community

See what builders ship, or start from an example.

View showcase →

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'>
2type Task = { id: string; title: string; done: boolean }
3let tasks = $state<Task[]>([])
4
5function toggleTask(id: string) {
6task.done = !task.done // just added by BYOB
7}
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

Online
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.

  1. 01 Describe the product Start with the outcome, audience, and any constraints. BYOB turns the idea into a practical build plan.
  2. 02 Shape the UX Review the proposed flows, screens, data needs, and visual direction before code starts moving.
  3. 03 Generate the app Tool Mode writes SvelteKit code, connects integrations, and keeps each change visible in preview.
  4. 04 Test and refine Ask for edits, roll back when needed, run checks, and keep the project editable instead of disposable.
  5. 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
npm
npx -y byob-cli codex install

Approve 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.

Rated 4.9/5 by builders shipping with BYOB.

Start building
  • Clean SvelteKit code you own
  • One-click deploy + rollback
  • Pay as you go pricing

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

Popular

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 plans
View full pricing

Need white-label and SSO? Talk to us →

An AI code editor uses a language model to propose and apply changes to source files. BYOB reads your existing routes, components and schema, drafts the edit you describe, and presents it as a reviewable diff in a real Git repository, so you can accept, adjust or rewrite the result instead of trusting a black box.

It edits files, not a sandbox

Some assistants produce code in a panel you then copy somewhere else. That breaks the moment the snippet depends on your imports, your route structure or your component props. BYOB's editor writes to the project itself, so a request like adding a validation check lands in the form component that already exists, uses the utilities already imported, and respects the naming your codebase follows. The edit is real immediately, which is what makes the loop fast.

Describe the change, review the diff

Reviewing an AI edit should feel like reading a colleague's pull request. In BYOB each change is committed, so you can see exactly which lines were added or removed before you continue. If the direction is slightly wrong, you refine it in conversation; if it is close, you tweak a line by hand. Nothing is applied invisibly, and history gives you a clean way back to a known-good state when a change misses the mark.

Context pulled from the whole project

An editor is only as good as what it can see. BYOB gives the assistant awareness of your routes, components and database schema, so it can update the places a change touches. Ask it to rename a field and it can follow that name through the form, the endpoint and the query. That project-level context is what separates a useful editor from autocomplete, because most real edits ripple across several files rather than living in one.

Your hands still work here

AI should not be the only way to change code. The browser editor supports ordinary typing, so you can write a function, fix an indentation problem or restructure a file without prompting. Some developers draft with AI and polish by hand; others do the reverse. Because both paths act on the same project, you never have to choose one workflow for the whole codebase or keep two copies in sync.

Preview and rollback as guardrails

Reading code and seeing behavior are different checks. A live preview shows what the edit does when rendered, which catches layout regressions that look fine in source. Paired with version history, that gives you two safety nets: inspect the change before you commit to it mentally, and recover a previous commit if the rendered result is wrong. Fast iteration is only safe when undoing it is easy too.

Where an AI editor earns its place

It shines on the repetitive middle of a project: wiring a new screen into existing navigation, adjusting a query when a column changes, or converting a mockup into components that match your conventions. It is less suited to novel algorithms or code with strict external constraints, where you will want to write the core yourself. BYOB supports both modes, so the tool accelerates the routine and steps aside for the genuinely hard parts.

FAQ

Frequently Asked Questions

Does the AI edit my existing files or create separate ones?

It edits your project directly. Changes are applied to the relevant routes and components rather than dropped into an isolated scratch file.

Can I undo an AI change?

Yes. Every change is committed to Git, so you can inspect the diff and roll back to an earlier commit if the result is not what you wanted.

Can I still type code myself?

Yes. The browser editor supports manual editing, syntax highlighting and file navigation alongside the AI workflow.

What language and framework does it target?

BYOB generates and edits SvelteKit projects with TypeScript and Tailwind, so the editor works within that stack.

Does it understand my database schema?

Yes. The assistant can reference your schema when editing queries and forms, which helps keep data changes consistent across files.

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.