# How to Vibe Code Your Own Semrush (and Stop Paying for It)

> Your Unfair Advantage for Growing Brand Visibility

- Site: https://semrush.com
- Category: SEO & Digital Marketing SaaS
- Platforms: Web app
- Verdict: **Don't bother** (18/100 vibecodeable)
- Estimated effort: 6+ months of full-time work for a crippled subset, forever for the full platform

## Verdict

Build a personal wrapper or local rank-tracker for your own domains, but you cannot clone Semrush because its core value lives inside petabyte-scale proprietary databases and web-crawler infrastructure.

Semrush is a data enterprise masquerading as a web app. While an AI coding agent can spin up a polished Next.js dashboard with charts, auth, and database models in an afternoon, an empty database makes the application completely useless. You cannot replicate a 28-billion keyword index, 43-trillion backlink database, and global clickstream panel as a solo developer without spending millions of dollars on data acquisition and distributed scraping infrastructure. Building a personal clone means scaling down to tracking your own custom keywords using direct Google Search APIs and local cron jobs.

### What you can't replicate

- 28B+ keyword database across 142 regional search databases
- 43T+ backlink index updated continuously
- Global clickstream behavioral panel of 200M+ users for traffic estimation
- Enterprise-scale distributed web crawler network bypassing bot walls

## What it does

An all-in-one online visibility, SEO, competitor intelligence, and content marketing SaaS platform tracking billions of keywords and domain profiles across traditional search engines and AI discovery engines.

### Core features

- Keyword Magic Tool and difficulty metrics
- Domain Overview and traffic estimators
- Position Tracking for custom keyword lists
- Technical Site Health crawler
- AI Search & Brand Sentiment tracking (AEO)
- Competitor gap analysis
- Scheduled reporting and PDF exports

## The business

### Pricing

- Free: $0/mo
- SEO: $117.33/mo
- Starter: $165.17/mo
- Pro+: $248.17/mo
- Advanced: $455.67/mo

### Funding

$40,000,000 raised.
- Venture Round - April 2018
Investors: Greycroft, Headline, Siguler Guff & Company

Founded 2008.
Team size: 1,001 to 5,000.

## The hard parts

- Massive multi-billion keyword database acquisition and storage
- High-throughput distributed web crawler bypassing Cloudflare/Akamai bot defenses
- Clickstream traffic estimation algorithms processing billions of events
- Orchestrating live recurring queries across external LLMs for AEO sentiment tracking

## How to vibe code Semrush

### Prerequisites

- Node.js (free): Runtime environment for building the TypeScript web application.
- GitHub (free): Source control and deployment pipeline integration.

### Recommended AI tools

- Claude Code: Best-in-class agentic coding tool for scaffolding full-stack features and complex React state management directly in the terminal.
- Cursor: Ideal AI-native editor for refining dashboard layouts, charts, and Tailwind styling components.

### Stack

- Frontend: Next.js
- Backend: Next.js API Routes
- Database: Turso
- Auth: better-auth
- Payments: none
- Other: Vercel AI SDK, Tailwind CSS, Shadcn/ui

### Hosting

- Vercel (Hosting the Next.js frontend and serverless API functions with zero configuration.): $0/mo
- Turso (Serverless SQLite database storage for user projects, custom keywords, and tracked rank histories.): $0/mo

### Build guide

1. **Project Scaffolding & Design System Setup** — Initialize the Next.js application with Tailwind CSS, TypeScript, and Shadcn/ui components configured for a dark-themed analytics dashboard layout.

```
Scaffold a new Next.js 16 application with TypeScript, Tailwind CSS v4, and App Router. Set up a professional enterprise SaaS dashboard layout styled similarly to Semrush, featuring a collapsible sidebar navigation, top header with user profile dropdown, and a main content viewport with a dark/light theme toggle. Install Lucide React icons and configure Shadcn/ui foundational components (card, table, dialog, dropdown-menu, tabs).
```

2. **Database Schema & Authentication** — Configure Turso SQLite database with Drizzle ORM and implement local user authentication using better-auth.

```
Configure Drizzle ORM to connect to Turso SQLite using the HTTP client driver. Create database schemas for users, projects (tracking domain URLs), tracked_keywords (domain, keyword, target region, search volume, difficulty, current rank), and rank_history (date, keyword_id, position). Implement better-auth for secure email/password authentication with session management and protecting dashboard routes.
```

3. **Domain Overview & Keyword Research Subset** — Build the Domain Overview dashboard view and a mock Keyword Magic Tool interface that queries external search or AI fallback data for personal domain analysis.

```
Build a Domain Overview page where users input a target domain URL. Create backend API endpoints that fetch basic site metrics (organic traffic estimate, keyword count, backlink count) using web scrapers or Firecrawl API fallback. Implement a Keyword Magic Tool interface with a searchable table displaying keyword ideas, search volume, keyword difficulty score, and intent badges, backed by your Turso SQLite database.
```

4. **Position Tracking & Rank History Charts** — Implement daily position tracking charts using Recharts to visualize keyword rank fluctuations over time.

```
Create a Position Tracking module with a form to add custom keywords for user projects. Build interactive time-series line charts using Recharts that display daily rank positions (1 to 100) over 7, 30, and 90-day periods. Implement background cron triggers or manual update buttons that simulate or fetch rank updates and store historical data points in the rank_history table.
```

5. **AI Visibility & Brand Sentiment Tracker** — Integrate LLM prompt testing to track how AI search engines cite and mention brand names.

```
Build an AI Brand Sentiment tracking module. Create an API route utilizing the Vercel AI SDK and Anthropic/OpenAI APIs to programmatically query live models with custom user prompts (e.g., 'What are the top software tools for X?'). Parse the LLM responses to determine if the user's configured brand domain is cited, calculate brand visibility share of voice, and display sentiment breakdown charts on the dashboard.
```

### Cost vs paying

**Starting costs (one-time):**

- Custom Domain: $12.00 one-time
- Total: ~$12.00 one-time

**Ongoing costs (monthly):**

- AI API Usage (Prompt Tracking): ~$5.00/mo
- Total: ~$5.00/mo

- Paying for the SaaS instead: $139.00/mo
- Build time: 40-60 hours
- AI tool credits: $20.00 (Claude Pro)
- Break-even: Not applicable (commercial data cannot be replicated)

## Sources

- [Semrush Official Website & Pricing](https://semrush.com)