Quiz — Advanced + Certificate

Historic moment — all three levels completed! 🎉🎓

You have gone through 24 articles and now master Claude AI from first prompt to product building with API. You are among the most competent Claude users in the world. Very few have systematically learned all the layers from beginner to expert.

✅ Level 3 — summary:
— Claude API: console.anthropic.com, API key, PHP and Python
— Streaming: instant response with text/event-stream
— Tokens: input vs output, max_tokens, stop_reason
— Chatbots: stateless API + conversation history in session/MySQL
— Agentic use: tool use, multi-agent, security boundaries
— Automation: cron, batch, webhook, rate limiting
— Product building: system prompt as product, MVP, niche
— Prompt engineering: XML, meta-prompting, self-critique, format locking

What now? 🚀

1️⃣

Build something — take a concrete idea and create an MVP. It does not need to be perfect. It just needs to exist.

2️⃣

Share the knowledge — teach a colleague, write a post, show someone what Claude can do. Teaching is the best way to learn.

3️⃣

Stay updated — the AI field moves fast. Follow the Anthropic newsletter and come back here when we publish new articles.

"You started as a beginner. You are now an expert. The only thing that separated you was the willingness to learn — step by step." — To you who completed all three levels

🎯 Test your knowledge

Test yourself — completely optional, but fun! 🎯

Question 1 of 5

What is the most important security rule for the API key?

Never store the API key in the code — use environment variables or a secrets file outside public_html.

Question 2 of 5

Why must a chatbot send the full conversation history in every API call?

The Claude API is stateless — Claude remembers nothing between calls. The history must be sent for Claude to have context.

Question 3 of 5

What is the role of the system prompt in an AI product?

The system prompt is the secret sauce — domain knowledge and instructions that make Claude a specialist for the audience.

Question 4 of 5

What does it mean if stop_reason in the API response is "max_tokens"?

The answer was cut off because it reached the max_tokens limit — Claude is not finished. Increase max_tokens to get the full answer.

Question 5 of 5

What is the most common pitfall in expert prompt engineering?

Over-engineering — a 2,000 word prompt is rarely better than a 200 word one. Always test with the simplest possible prompt first.