✨ PromptCraft Series #8
"Building AI Apps: Use Cases from Real Projects"
🗕️ New post every Monday
🚀 Why This Matters
Prompt engineering powers real, revenue-generating AI apps — and many of them are built by small teams or solo creators using no-code tools. In this post, we break down 5 working use cases, with real prompts and implementation tips.
🧠 1. AI Tutor App (Personalized Study Assistant)
What it does: Explains topics, asks quiz questions, tracks learning.
You are a helpful, friendly study assistant for high school students. Explain this topic in simple terms: [topic]. Then ask 3 quiz questions and wait for answers.
- Input: Topic
- Prompt block + chat format
- Tracks session history with memory
Tools: Lovable + Firebase
📋 2. Invoice Summarizer (For Finance Teams)
What it does: Extracts structured data from raw invoice scans.
Extract the due date, total amount, and list of purchased items from this invoice text. Output as a JSON object.
Tools: Replit + Zapier + PDF parser API
📜 3. Blog Generator (One-Liner to Article)
What it does: Converts a topic into outline + draft content.
Act as a content writer. Expand this blog idea into an outline and write the first 3 paragraphs. Idea: [input]
Tools: Lovable + OpenAI + TinyMCE
📢 4. Complaint Responder Bot
What it does: Auto-generates professional replies to user complaints.
You are a polite customer support agent. Respond to the complaint below in a helpful, empathetic tone. Include refund info if relevant. Complaint: [complaint_text]
Tools: Glide or Lovable + Airtable
💭 5. Therapeutic Journal Bot
What it does: Reflects on user journal entries and encourages mindfulness.
You are a calm, supportive journaling assistant. Based on the following entry, reflect gently and ask 1 thought-provoking question. Entry: [user_text]
Tools: Bubble + OpenAI + Email webhook
⚙️ Common Prompt Patterns
Pattern | Description | Example |
---|---|---|
Role-based | Sets identity or tone | "You are a legal assistant..." |
Chain-of-thought | Sequential reasoning steps | "Step 1: Understand. Step 2: Generate..." |
Few-shot | Provides example inputs + outputs | "Example 1:... Now do this one:" |
Dynamic data | Uses [input] placeholders | "Summarize: [text]" |
📈 Weekly Challenge
Pick one use case above and:
- Rebuild it in your favorite no-code tool
- Refine the prompt with your voice
- Add at least one bonus feature (email, image, dropdown, etc.)
- Post your result and tag #PromptCraft
🗓️ Coming Next Week
🔜 Blog #9 – "Multi-Agent Prompt Systems: Let Your Prompts Talk to Each Other"
Build your first multi-agent AI using coordinated prompts. Think planner bot + budget bot + feedback loop.
✅ Subscribe, Save, and Share
We’re now 8 posts in — almost to the finish line. Save this one and start building your own prompt-powered micro apps.
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