Built a landing page / marketing site with Codex CLI?
We'll make it production-ready.
Landing pages are your first impression. Speed, SEO, and conversion optimization matter more here than anywhere else — a slow landing page or broken form directly costs you customers. AI tools build visually appealing pages, but they often miss the technical details that determine whether your page ranks, loads fast, and converts visitors.
Landing Page / Marketing Site challenges in Codex CLI apps
Building a landing page / marketing site with Codex CLI is a great start — but these challenges need attention before launch.
Page speed
Landing pages must load in under 2 seconds. AI tools generate bloated CSS, unoptimized images, and unnecessary JavaScript that slow loading. A 1-second delay in load time reduces conversions by 7%.
SEO fundamentals
Missing meta descriptions, incorrect heading hierarchy, no Open Graph tags, no structured data, and no sitemap. AI tools build the visible content but skip the invisible SEO infrastructure.
Form handling
Your contact form, waitlist signup, or demo request form must work flawlessly. AI-generated forms often lack validation, error messages, success confirmations, and backend integration.
Mobile responsiveness
Over 60% of traffic is mobile. AI-generated layouts sometimes break on small screens — overlapping elements, unreadable text, and inaccessible buttons. Every pixel matters for conversion.
Analytics and tracking
You need to know where visitors come from, what they click, and where they drop off. AI tools don't set up analytics, conversion tracking, or UTM parameter handling.
What we check in your Codex CLI landing page / marketing site
Common Codex CLI issues we fix
Beyond landing page / marketing site-specific issues, these are Codex CLI patterns we commonly fix.
API keys and secrets written directly into generated source files
Codex CLI generates code with placeholder credentials that developers often replace with real values inline, leaving secrets committed to version control. There is no .env scaffolding or secret management setup by default.
No authentication or authorization on generated API endpoints
When Codex generates Express or FastAPI backends, routes are created without middleware for authentication, meaning every endpoint is publicly accessible immediately after deployment.
Single-file output breaks apart for any real project structure
Codex frequently outputs all logic into one or two files rather than organizing code into modules, services, and utilities — making the result hard to maintain and extend as the codebase grows.
Generated code lacks awareness of existing project context
Because Codex operates from a prompt without full codebase indexing, it generates code that duplicates existing utilities, ignores established conventions, and introduces conflicting patterns alongside your real code.
Start with a self-serve audit
Get a professional review of your Codex CLI landing page / marketing site at a fixed price.
External Security Scan
Black-box review of your public-facing app. No code access needed.
- OWASP Top 10 vulnerability check
- SSL/TLS configuration analysis
- Security header assessment
- Expert review within 24h
Code Audit
In-depth review of your source code for security, quality, and best practices.
- Security vulnerability analysis
- Code quality review
- Dependency audit
- Architecture review
- Expert + AI code analysis
Complete Bundle
Both scans in one package with cross-referenced findings.
- Everything in both products
- Cross-referenced findings
- Unified action plan
100% credited toward any paid service. Start with an audit, then let us fix what we find.
Frequently asked questions
Can I build a landing page / marketing site with Codex CLI?
Codex CLI is a great starting point for a landing page / marketing site. It handles the initial scaffolding well, but landing page / marketing sites have specific requirements — page speed and seo fundamentals — that need professional attention before launch.
What issues does Codex CLI leave in landing page / marketing sites?
Common issues include: api keys and secrets written directly into generated source files, no authentication or authorization on generated api endpoints, single-file output breaks apart for any real project structure. For a landing page / marketing site specifically, these issues are compounded by the need for page speed.
How do I make my Codex CLI landing page / marketing site production-ready?
Start with our code audit ($19) to get a clear picture of what needs fixing. For most Codex CLI-built landing page / marketing sites, the critical path is: security review, then fixing core flow reliability, then deployment. We provide a fixed quote after the audit.
How much does it cost to fix a Codex CLI-built landing page / marketing site?
Our code audit is $19 and gives you a complete report of issues. Fixes start at $199 with our Fix & Ship plan. For larger landing page / marketing site projects, we provide a custom fixed quote after the audit — no hourly billing.
Get your Codex CLI landing page / marketing site production-ready
Tell us about your project. We'll respond within 24 hours with a clear plan and fixed quote.