Build AI Apps & Sell Them: Complete Claude Code Course
Learn to create profitable AI-powered applications using Claude Code and Anthropic's tools without coding knowledge. Build landing pages, WhatsApp automation systems, and knowledge bases that solve real business problems, then sell them to companies for €5,000–€10,000+ per project.
The Vibe Coding Revolution
Ordinary people earning €20,000/month with AI
Non-programmers like Agustín Medina are creating complete applications using AI and selling them to companies for €500–€10,000 each, plus monthly maintenance fees. This business model is called Vibe Coding and represents a shift from traditional employment to building AI-powered businesses.
You don't need to be a programmer
Claude Code can program for you. The skill is not writing code but understanding business problems, communicating clearly with AI, and packaging solutions that solve real pain points. Prior coding knowledge is optional but not required.
Break the limiting beliefs
The biggest obstacle to starting is not the market but the excuses you tell yourself: needing higher education, needing to know how to program, needing to be an expert salesman. None of these are true. The Ailink manifesto teaches that you sell solutions, not technology.
The Ailink Business Model
Three core rules of the Ailink manifesto
Rule 1: Sell solutions, not technology. Rule 2: Excellence is your habit—be premium, never mediocre. Rule 3: You are a premium architect, not a cheap technician. This mindset separates you from 99% of AI entrepreneurs and justifies higher pricing.
Connect technology to real business problems
The wall between non-technical people and AI solutions has fallen. You don't create new technology; you connect existing powerful tools (Claude, Gemini, APIs) to solve specific client problems. This is where the money is.
Charge based on the problems you solve
Income is proportional to the size of problems solved. Solving a small repetitive task earns little; solving a major business bottleneck that saves the client thousands per month justifies €5,000–€10,000+ fees. It's mathematical: if you save them €1,000/month, a €5,000 solution pays for itself in 5 months.
Getting Started: IDE & Claude Code Setup
Google Antigravity is your development environment
Antigravity is an IDE (integrated development environment) that acts as a file explorer and text editor. It's where you create folders, files, and interact with AI agents. Download it free for your operating system; it's simply a visual way to organize and manipulate code.
Claude Code is more powerful than Google's default agent
While Antigravity comes with Google's model, Claude (from Anthropic) is more precise, better at coding, and more deterministic. Install the Claude Code extension in Antigravity, then subscribe to Claude Pro (€15/month) for development or Claude Max (€90/month) for intensive client work.
Understand the context window
Every AI model has a limit on how much information it can process in one session (the context window). Tokens are the unit of measurement. As you fill the context window, the model becomes less precise and more expensive. Keeping it clean saves money and improves accuracy.
Core Concepts: Prompts, Cloud.md & Skills
Write clear, structured, specific prompts
Good prompts have three qualities: clarity (so AI understands), structure (so AI knows the order of tasks), and specificity (so AI knows exactly what to do). Avoid vague instructions. Give restrictions (what NOT to do) rather than just instructions. Keep prompts short to save tokens.
Cloud.md preloads instructions before each session
Cloud.md is a Markdown file that sits in your project and loads before every conversation. It contains guidelines, rules, and context about your project so Claude understands how to behave from the start. This saves tokens and improves consistency compared to repeating instructions in every prompt.
Skills are reusable, efficient workflows
Skills are specialized tools stored in .cloud/skills/ that Claude can call when needed. Unlike cloud.md (which loads fully and consumes tokens), skills only load their first sentence until Claude detects they're needed. This lets you have many tools without bloating the context window. Over 91,000 free skills exist online; never pay for them.
Sub-agents handle parallel, specific tasks
Sub-agents are specialized Claude instances that the main agent can call to perform very specific subtasks. This breaks the limitation of one context window and lets you use different models (e.g., cheaper Haiku for light tasks, expensive Opus for complex ones) for different jobs, saving money and improving efficiency.
Building Your First App: Landing Page with Lead Scoring
Replicate landing pages from references in minutes
Use Landingfolio or similar sites to find a landing page design you like. Screenshot it or copy the URL, then ask Claude to recreate it exactly in your branding. Claude will iteratively compare, correct, and refine until it matches. This takes minutes instead of days.
Integrate intelligent forms with lead scoring
A basic form is worthless; an intelligent form extracts prospect data, enriches it (e.g., scrapes their website), scores them 1–100 based on fit (B2B, budget, company size), and routes high-priority leads to sales. This uses Gemini API to analyze and Air Table to store data, creating a 24/7 lead qualification system.
Sell the ROI, not the technology
Don't pitch 'a landing page with a form.' Pitch 'a system that saves you 20 hours/month on lead qualification and increases conversion by prioritizing high-value prospects.' If it saves €1,000/month, a €5,000–€10,000 solution is a no-brainer.
WhatsApp Automation: Invoice Management System
The problem: Manual invoice entry is slow and error-prone
Companies with traveling staff (technicians, consultants) collect receipts and manually enter them into billing systems, wasting 2–3 hours/day and risking human errors that trigger expensive tax penalties. This is a massive pain point.
The solution: WhatsApp bot + Gemini + dashboard
Create a WhatsApp number linked to Claude. Users send invoice photos; Gemini extracts all data (vendor, date, amount, category), confirms via chat, and auto-populates a professional web dashboard. Everything is centralized, real-time, and error-free. Saves 20+ hours/month per employee.
Use Baileys skill to integrate WhatsApp quickly
Baileys is a library that lets you link your phone number to Claude without Meta's slow official integration. It's faster for MVPs but carries a small ban risk if misused. For production, switch to Meta's official integration once the client buys.
Charge €5,000–€10,000+ for this system
If the system saves 20 hours/month at €50/hour, that's €1,000/month saved. A €5,000 solution pays for itself in 5 months. Add maintenance fees (€200–€500/month) for ongoing support and updates.
Knowledge Bases & RAG: 24/7 Expert Systems
The problem: Employees waste time searching manuals
Technicians, customer service reps, and new hires spend hours searching through PDFs and manuals to answer questions. This delays response times, increases errors, and creates bottlenecks. Knowledge is siloed in star employees who leave, taking expertise with them.
RAG (Retrieval-Augmented Generation) bypasses context limits
RAG breaks large documents into small chunks, converts them to vectors (numerical representations), and stores them in a vector database (Pinecone). When a user asks a question, Claude retrieves only the relevant chunks, not the entire document. This lets you feed Claude unlimited information without hitting context limits or hallucinating.
Build a 24/7 sales or support agent
Upload all product manuals, FAQs, or technical docs to Pinecone. Users ask questions via web widget or WhatsApp. Claude retrieves relevant sections, answers instantly, and cites the exact page/image used. For e-commerce, this increases conversion; for support, it reduces response time from hours to seconds.
Solve staff turnover by replicating expert knowledge
Create an AI expert that embodies the knowledge of your best employee. New hires can ask it questions instead of interrupting the expert. The expert has more time for high-value work. Knowledge is preserved even if the person leaves. This is a massive efficiency gain.
Architecture: Gemini + Pinecone + Supabase
Gemini is the language model (conversational AI). Pinecone stores vector embeddings of documents (RAG). Supabase is the conventional database (user logins, conversation history, metadata). Together, they create a complete knowledge system.
Model Context Protocol (MCP): Standardized Tool Integration
MCP standardizes connections to external tools
Before MCP, each tool (Canva, Figma, Gmail) required custom integration. MCP is a universal standard that lets Claude connect to any tool via a single protocol. This makes integrations faster and more reliable.
Connect Canva, Gmail, Google Drive, Supabase via MCP
Log into Claude web, go to Settings > Connectors, and add MCPs for tools you need. Claude can then create designs in Canva, send emails via Gmail, access files in Drive, or manage databases in Supabase—all natively, without manual API keys.
MCPs consume context but enable powerful automation
MCPs are preloaded and consume ~16% of context window even if unused. Use them for prototyping and validation. Once validated, convert to skills (which load only when needed) for production to save tokens and money.
Deployment & Going to Production
MVP vs. production: Know the difference
An MVP (minimum viable product) is a demo on your computer to validate demand. Production is a deployed, stable, secure system running 24/7 for real customers. MVPs are fast to build; production requires security, backups, monitoring, and support.
Iterate with customers before deploying
Show the MVP, gather feedback, iterate. Once the customer validates demand and agrees to buy, then invest in production deployment. This avoids building features nobody wants.
Customize for each client's ecosystem
Don't sell generic SaaS; integrate into the client's existing systems (their CRM, database, website). This is where you differentiate from big competitors and justify premium pricing. Customization is your blue ocean.
Real Success Stories from Ailink Community
Santiago: €4,000 in 4 days
Applied Ailink methodology to build a simple automation. Sold it within days.
Francisco: €10,000 for an MVP in 3 months
Built a chatbot for a mayor's office to answer bureaucratic FAQs. Sold for €10,000 in 3 months.
Javier: €10,000+ in 7 months
Billed over €10,000 in 7 months using Ailink system. Described as a tough but rewarding journey.
Cristian: €35,000 financing in Colombia
Secured €35,000 in financing by applying Ailink methodology to build AI solutions.
Key Mindset Shifts
You are a CEO, not a programmer
Claude is your employee. You give strategic direction; Claude executes. Your job is to understand problems, communicate clearly, and ensure quality. You don't write code; you manage an AI that does.
60% of ideas fail; execute many imperfectly
Don't obsess over one perfect idea. Create MVPs quickly, test them, and move on. Quantity and speed beat perfection. Fail fast, learn, and iterate.
Differentiate by customization, not innovation
You can't out-innovate Google or big SaaS companies. But you can customize solutions for specific clients' ecosystems. This is your competitive advantage.
Don't get lost in technical details
Focus on the outcome, not the implementation. If Claude struggles with something, tell it to solve it however it can. Don't debug; delegate.
Analysis paralysis kills progress
Don't overthink. Start now. Take action. The course provides free resources in the Ailink WhatsApp community to build the three apps immediately.
Notable quotes
We don't sell technology, we sell solutions. We solve problems and we make money from it. — Agustín Medina
The wall has fallen. Today, thanks to Vibe Coding, we can do it simply with natural language. — Agustín Medina
We charge proportionally to how big the problems we solve are. — Agustín Medina
Action items
- Download Google Antigravity IDE for your operating system and install the Claude Code extension.
- Subscribe to Claude Pro (€15/month) to access Claude within Antigravity for development.
- Create a Google AI Studio account and generate an API key for Gemini to use in your projects.
- Join the Ailink WhatsApp community (link in video description) to access free resources and skills for building the three applications.
- Build your first MVP: a landing page with intelligent lead scoring using the cloud.md template provided in the community.
- Build your second MVP: a WhatsApp invoice automation system using the Baileys skill and Gemini API.
- Build your third MVP: a knowledge base system using Pinecone, Supabase, and Gemini for a specific industry or use case.
- Test each MVP with a real customer or prospect to validate demand before investing in production deployment.
- Set up environment variables (.env file) correctly with API keys for Gemini, Air Table, Pinecone, and Supabase.
- Use plan mode in Claude Code for complex projects to ensure Claude thinks through the architecture before executing.
- Always save your files (Cmd+S or Ctrl+S) after making changes to avoid losing work.
- Monitor context window usage with the /context command to keep costs low and accuracy high.
- Start with Sonnet model for most tasks; use Opus only for complex projects; use Haiku for light, repetitive tasks.
- Never pay for skills; search free repositories like the MCP library with 91,000+ free skills.
- Disconnect unused MCPs to reduce context consumption and save tokens in production.