24d • General discussion
Smart Expense Tracker: AI Agents in Action with n8n
🧭 1. What is n8n?
- n8n is a workflow automation platform.
- Think of it like LEGO: you connect different blocks (called nodes) that represent actions (API calls, logic, storage, AI, etc.).
- You can start workflows with triggers (webhook, chat message, cron schedule, etc.) and then chain steps.
In your example:
- Trigger: When chat message received
- Actions: Store in Google Sheets, send via Gmail, process with OpenAI, etc.
🤖 2. What is an AI Agent in n8n?
- An AI Agent is a special node in n8n that combines:
👉 The agent doesn’t just respond with text.
It can reason about input, decide which “tool” to use, and take action automatically.
⚙️ 3. How the AI Agent Decides
- When the agent gets input (like "debit shopping 5000"), it runs a reasoning loop:
👉 Example in your Expense Tracker:
- Input: "debit shopping 5000"
- Agent thinks:
- Agent calls: Google Sheets Append Row tool
- Sheet gets updated: shopping | 5000 | debit
- If threshold exceeded (e.g., > $1000), agent might also call: Send Gmail tool.
🧾 4. How Your Expense Tracker Evolves
- Basic Automation (No AI)
- With LLM (AI Add-on)
- With AI Agent (Full Power)
This is the shift from rule-based automation → AI-driven decisions.
📊 5. High-Level Workflow from Your Screenshot
- Trigger: User sends expense text.
- AI Agent: Understands input and decides what to do.
- Tools:
- Memory: Keeps a running history of expenses.
- LLM: Powers reasoning & classification.
🎯 6. Why It’s Powerful
- Traditional automation: “If it contains ‘debit,’ then do X.”
- AI Agent automation: “I understand this natural language text. Let me classify, remember context, and decide which tool to use.”
- This makes it flexible, scalable, and closer to human reasoning.
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Smart Expense Tracker: AI Agents in Action with n8n
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