No Hands Needed! Step-by-Step Guide to Ship a Money-Making Website in One Day with Codex

You don’t need to know Figma, React, Supabase, or Vercel. This article teaches you to skip all the red tape and go straight to the point with Codex — get a profitable website up and running.

Take sudoku.com: it gets 12.69 million organic monthly searches (SimilarWeb, April 2026). Most developers in the Chinese-speaking world haven’t yet built US-market word/number game sites — that’s the information asymmetry right there.

Last week I spent one day building an NYT Connections-style word grouping game site — Daily Word Categories.

Zero design experience, zero frontend/backend code, monthly cost is just one Codex subscription at 20**. The other 4 tools are all **0 to start.

I never typed a single command or clicked a single mouse button myself — Codex ran the commands, Codex controlled every app on my computer (browser/Finder/design software, anything), Codex configured the database.

Even better: Codex can now run tasks in multiple tabs in the background without occupying your browser. That means while Codex registers accounts/changes DNS for you, you can use your computer for other things at the same time.

No need to learn design, write code, or memorize deployment commands — you only talk to Codex.

What Codex Can Do Now — The 3 Things That Make It Hands-Off

Most people in the Chinese tech community still think Codex is just an “AI code-writing tool.” Actually, after May 2026, Codex can do 3 things — and those 3 things together = running your entire side-project site for you:

▸ CLI Command Execution — run npm / git / pnpm / vercel commands. When to use: installing tools / starting projects / deploying.

▸ Computer Use — control any app on your computer — Chrome / Safari / Finder / design software / any GUI. Authorize once, and Codex clicks / types / takes screenshots for you. Chrome has a dedicated extension (most reliable when using your logged-in session). When to use: registering 5 accounts / changing DNS / configuring Search Console / operating any app that can’t be handled via CLI.

▸ MCP Service Invocation (Supabase / GitHub / Stripe, etc.) — directly call external service APIs + configuration. When to use: setting up database schema / creating repositories / configuring payments.

What’s in the Stack?

5 tools combined, 1 paid + 4 free to start:

• Codex — main driver + Computer Use + MCP triple combo → $20/month (subscription)

• Open Design — design generation (open-source, 9 CLI compatible) → $0 (local-first)

• Supabase — database + auth + file storage (has MCP interface) → $0 (free tier: 500MB DB / 50k monthly active users)

• Vercel — deployment + domain hosting + CDN → $0 (free tier: 100GB bandwidth/month)

• Replicate — AI model API (when needed) → pay-per-use $0.001–0.01/request

• Domain (required) — your choice → $10/year (Namecheap)

→ **First year total cost ~250** (20×12 + $10 domain, excluding pay-per-use APIs).

Why Daily Word Categories as the Demo?

US-market word/number games are a blue ocean in 2026. 3 data points (publicly verifiable):

• sudoku.com: organic monthly searches 12.69 million (SimilarWeb, April 2026), still growing

• NYT Games: per The New York Times public figures, 10+ million daily active users

• Long-tail keywords like “Connections hints today” have large daily search volumes (per Google Keyword Planner)

Why Daily Word Categories is perfect for AI-powered site building:

• AI generates unlimited levels directly — 16 words + 4 themed groups per day, one sentence to Codex

• Beginners grasp the rules in 5 seconds — ultra-minimal UI, no complex states

• Clear monetization path — AdSense (traffic volume) + affiliate (promote similar tools) + premium subscription (daily hints)

• Information asymmetry holds — most Chinese developers don’t build US-market word games, competition is low

What is Open Design and Why You Must Install It

Open Design is an open-source alternative to Claude Design by @tuturetom’s nexu-io team (GitHub: github.com/nexu-io/open-design).

3 core features:

• Local-first: installed on your machine, no data uploaded

• BYOK (bring-your-own-key — use your own API key): cost controllable

• 19 Skills + 71 brand-grade Design Systems: covering e-commerce / SaaS / games / personal sites

• 9 CLI compatible: works with Codex / Claude Code / Cursor / Gemini / OpenCode / Qwen / Copilot / Hermes / Kimi

It solves the biggest pain point for vibe coding enthusiasts — UI design.

Step-by-Step Walkthrough

5 steps. Each step clearly states “What you do / What Codex does for you” — what you do is just talk.

1. Codex Registers 5 Accounts for You (15 minutes)

You only do 3 things: tell Codex “help me register 5 accounts” → watch the screen + enter email / password / verification code → click “Allow” during OAuth authorization.

Codex does for you: opens the browser with Computer Use → opens each registration page one by one → automatically fills forms + handles OAuth redirects + records account info → guides you to confirm + switch to the next website.

Send this prompt to Codex:

“Use Computer Use to sequentially register these for me: GitHub / Vercel / Supabase / Namecheap / Replicate. Prioritize using GitHub OAuth login (Vercel/Supabase both support it). I’ll enter my email and password, you run the flow + finally compile all 5 account details into a list.”

Codex automatically opens Chrome (recommended to use the Chrome extension because it uses your already logged-in session, more stable) and goes through each site. You only need to watch the screen, enter personal info, and click Allow.

2. Codex Installs Open Design + Full Toolchain for You (10 minutes)

You only do 2 things: send one prompt → press y to agree at each step.

Codex does for you: checks local environment → installs whatever is missing → installs Open Design → starts it → runs all commands + shows progress → tells you the local address when done.

Send:

“Go to github.com/nexu-io/open-design and install Open Design into ~/Tools/open-design. On Mac, prefer the official signed app. Also install Supabase CLI + Vercel CLI. When done, tell me the local Open Design address + confirm all 3 tool versions are installed.”

Codex automatically runs (recommended for Mac users to use the official app, most stable):

3–8 minutes complete, Codex tells you the local Open Design address.

3. Codex Operates Open Design to Produce Designs (5 minutes)

You only do 2 things: send a prompt describing your game site → choose 1 design you like.

Codex does for you: uses Computer Use to open the Open Design interface → enters design requirements → waits for output → presents 3 candidates to you → saves the chosen design to the project directory.

Send:

“Use Computer Use to open local Open Design. Create a Daily Word Categories game site design — similar to NYT Connections, 16 English words grouped into 4 categories daily. Dark theme, mobile-first, reference NYT Games’ minimal style. Generate 3 candidates for me to choose from.”

Codex automatically operates the Open Design interface + generates images.

4. Codex Writes Frontend + Configures Database via Supabase MCP (15–20 minutes)

You only do 2 things: send a prompt describing the features → wait for Codex to finish.

Codex does for you: writes the React frontend + uses Supabase MCP to directly configure the database schema + RLS + writes API + fully automates cron job setup (you don’t need to open the Supabase dashboard).

Send:

“Convert the second design into a Next.js project. Use Supabase MCP to directly configure 2 tables: (1) puzzles (date + 16 words + 4 categories) (2) userprogress (userid + puzzledate + solvedat). Set up basic RLS rules. Configure a daily cron job at 6 AM to generate new levels using GPT-5.”

Codex automatically calls Supabase MCP to configure the database directly (you don’t need to open the Supabase SQL editor) + writes frontend code + sets up the cron job.

7–15 minutes, localhost:3000 is playable.

5. Codex Deploys to Vercel + Uses Computer Use to Change DNS on Namecheap (15 minutes)

You only do 3 things: send prompt → enter Namecheap login password → enter Google Search Console password.

Codex does for you: runs git push + vercel deploy + syncs environment variables via CLI → uses Computer Use to open browser → operates Namecheap dashboard to change DNS → switches to Google Search Console for verification + sitemap submission.

Send:

“Push to a new GitHub repo, deploy to Vercel, auto-sync environment variables. Use Computer Use to log into my Namecheap and change the DNS for dailywordcat.com to the nameservers Vercel gave me. Also go to Google Search Console, set it up, and submit sitemap.xml.”

Codex automatically:

• CLI part: git init + push + vercel deploy + sync environment variables

• Computer Use part: opens browser → operates Namecheap to change DNS → switches to Google Search Console for verification + sitemap submission

Throughout, you only enter Namecheap/Google account passwords when Codex prompts you — everything else Codex clicks for you.

20–30 minutes for DNS to resolve.

At this moment you already have a live online website.

3 Common Pitfalls to Avoid

Pitfall 1: Computer Use not authorized — will get stuck in Step 1/3/5

The first time Codex’s Computer Use controls each app, a pop-up will appear asking you to click “Allow”. If you haven’t previously authorized Codex App’s Computer Use, go to Settings → Privacy → Accessibility/Screen Recording and authorize Codex once to avoid a 5-minute search for the permission pop-up mid-process. For Chrome, use the Chrome extension (most stable — uses your logged-in session).

Pitfall 2: Supabase RLS (Row Level Security) not configured = database exposed

Codex using MCP to configure RLS is a basic version. Before going live, you must review the RLS rules to confirm they make sense. Detailed configuration will be covered in a follow-up article.

Pitfall 3: Chrome background parallel tasks ≠ all Computer Use tasks can be parallel

Since the 5/21 OpenAI announcement, Codex tasks in Chrome run in the background in parallel without occupying your browser — Step 1 account registration / Step 5 DNS changes are Chrome tasks, so you can use your computer for other things at the same time.

However: when Codex operates native apps (Finder / Photoshop / any non-browser app), it is still sequential — during those moments, don’t grab the mouse / don’t cmd+Tab away; wait for it to finish that step before using the computer. Steps 2-4 occasionally use native mode when interacting with local Open Design, so watch out.

What Sites Can You Build with This Stack?

4 profiles to match:

You want to build US-market word/number game sites (blue ocean first choice) → Wordle variants / Connections variants / Sudoku / crossword puzzles

You want to build daily puzzle answer sites (long-tail traffic harvester) → “Connections hints today” / “Wordle answer today” style sites. The sudoku category leader gets 12.69M monthly organic searches

You want to build hot-keyword tool sites (“AI XX Generator” type) → ride new model releases to build tool landing pages

You want to build SaaS with login + payments → Supabase auth + Stripe + Vercel = complete commercial site

Monthly Cost vs. Revenue Expectations

• Month 1: monthly cost $20–30 / monthly revenue $0–50 (building + waiting for Google indexing)

• Month 3: monthly cost $30–50 / monthly revenue $50–300 (single site traffic picks up)

• Month 6: monthly cost 50–100 / monthly revenue **500–1000+** (multiple sites accumulate / AdSense + affiliate)

Revenue figures are common industry ranges; refer to your actual AdSense/affiliate dashboard. Reference ceiling: sudoku.com alone gets 12.69M organic monthly searches.

Final Words

In the past, launching a website required 3 roles: designer + frontend + backend. Or one person learning 3 skill sets and spending 3 months.

Now, with one Codex subscription + open-source Open Design = you cover all 3 roles. At $20/month, it’s barely more than a Starbucks coffee.

More importantly — Codex can now not only write code, but also use Computer Use to control any app on your computer (not just the browser — Finder / Photoshop / any GUI) + call MCPs to configure backend services. Today (5/21) OpenAI added another trick: Chrome tasks run in the background across multiple tabs without occupying your browser. Beginners truly need zero hands-on + zero waiting: you only talk, watch the screen, and press y; the rest of the time you can scroll Twitter or attend meetings as usual.

US-market word/number game sites are still a blue ocean — sudoku.com’s 12.69 million monthly searches are still growing, and most Chinese developers haven’t moved yet. Information asymmetry is money.

Pick a day and run through these 5 steps. After the first successful run, each new site launch takes about 30 minutes. Won’t mess up your weekend plans.