Step 1 Register at n8n.com
Step 2 on your Dashboard click create work flow
Step 3 Click on + Open Node Agent
select Ai AGent
Then click outside the canvas
Then Save
1. Chat Model
A chat model is the core AI engine that generates responses during a conversation.
It’s a large language model trained on vast amounts of data so it can understand questions, follow instructions, and provide helpful, human-like answers.
Key Characteristics of a Chat Model
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Understands natural language (text inputs)
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Generates context-aware responses
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Can reason, summarize, explain, and create content
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Adapts to conversation flow
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Does not store personal information unless explicitly allowed
What a Chat Model does
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Responds to prompts
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Maintains conversation context
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Performs tasks like writing, coding, explaining, solving problems
2. Memory
Memory allows an AI system to remember important user preferences across conversations—but only when the user explicitly wants it saved.
How Memory Helps
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Saves user preferences (tone, style, recurring details)
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Remembers ongoing projects or long-term goals
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Makes future responses more personalized
What Memory Does NOT Do
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It does not store personal details without permission
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It does not automatically remember everything
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It does not keep sensitive information unless the user clearly requests it
Examples of Memory
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“Remember I prefer short answers.”
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“Remember my business name is CloudWave Tech.”
3. Tools
Tools are extensions that the chat model can call to perform specialized tasks.
They allow the model to go beyond text generation and interact with systems, APIs, or external capabilities.
Why Tools Matter
Tools expand what AI can do. They let the model:
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Access real-time information (web search tools)
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Generate images
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Analyze code or run environments
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Create documents (PDF, Word, Excel)
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Use APIs for specific workflows
Examples of AI Tools
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Web browsing tool: fetches up-to-date information
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Python sandbox: executes code securely
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Image generation tool: creates images based on prompts
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Document generation tool: outputs PDFs, slides, spreadsheets
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Developer tools: run code snippets, test scripts, debug
How Tools Work
The chat model detects when a tool is needed → calls the tool → receives the result → integrates it into the final answer.
In Simple Terms
| Component | Purpose | Analogy |
|---|---|---|
| Chat Model | Brain that thinks and responds | A smart assistant |
| Memory | Saves preferences | A planner that remembers your style |
| Tools | Special abilities | Apps the assistant can use |
We will skip creating credentials for now. Click outside the canvas to go back to work flow
A context window is the amount of text or information an AI model can “hold in mind” at one time during a conversation. It includes the user’s messages, the AI’s replies, and any additional data provided.
The larger the context window, the more the AI can remember within a single session—allowing it to follow long conversations, understand complex documents, and maintain continuity. Once the limit is exceeded, older parts of the conversation roll off and the model can no longer reference them directly.
Connect your Gmail credential select Oauth2, Sign in with Google and select your Account. Let the Agent define the To field, Subject and Message.
It works
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