Build AI Agents with Think-Plan-Act Architecture Using Llama-4 Reasoning
 A plug-and-play n8n workflow that adds LLM-powered reasoning, planning, and action to your automations - with prompts, schemas, and full agent logic included.
**Ever wish your n8n flows could think before they act?**
**Now they can.** Say hello to the ultimate agent-based upgrade:
**Think – Plan – Act** - fully automated. Fully intelligent.
**What Is This?**
This product is a ready-to-use AI-powered workflow template for n8n, featuring a smart **Thinking Agent** that: Analyzes tasks, Generates a step-by-step plan, Executes actions intelligently, and Returns structured JSON outputs for your next steps.
Inspired by the Hugging Face agent architecture, this template gives your automations a brain before they press the red button.
**A clean 2-step process:**
THINK mode – Generates structured reasoning (goal, subgoals, tools, assumptions)
ACT mode – Executes subgoals step-by-step using tools and AI.
**What's Inside?**
This isn't just a flow - it's a framework. You get:
- Modular Agent Loop
- A demonstration workflow
**Requirements**
- OpenRouter API Key (or any other provider like OpenAI, Groq...)
**Built-in Parsers**
- Structured JSON parser for reliable outputs
- Natural language and unstructured parsing fallback
Plug in your own goals, tools, and OpenRouter keys.
**Includes a demo (e.g., "get the weather") to get started fast**
**Why You'll Love It**
- Plug & Play - Drop into any existing n8n flow
- Tool-Aware Reasoning - Plans include which tool to use and why
- Composable - Build workflows like agents: Reason – Plan – Execute
- Customizable by anyone - Even your intern can tweak the prompts
**Agent Customization**
Feel free to customize the agent settings by changing the `Config` node. Here's the default configuration:
```ts
const config = {
THINK: {
CONTEXT: ``, // Add the necessary context to the AI.
CONSTRAINTS: [`Rule 1`, `Rule 2`], // These are the rules that your AI should follow
TOOLS: [
{
tool: ,
description: ,
},
], // Add here the list of the tools that the AI will call in your backend or workflow.
},
};
return {
json: {
config: config,
input: $input.last().json,
},
};
```
After updating the configuration file, you will see the AI reasoning for your input. Feel free to connect with any other node creating smart tasks!
Platform
n8n
Category
AI
Price
Free
Creator
Lucas Dias
code
noOp
webhook
stickyNote
agent
lmChatOpenRouter
outputParserAutofixing
outputParserStructured
How to import this workflow into n8n
1Purchase or download the workflow to get the n8n workflow JSON file.
2In your n8n instance, open Workflows and choose "Import from File" (or paste the JSON with Ctrl+V on the canvas).
3Open each node marked with a credential warning and connect your own accounts and API keys.
4Run the workflow once manually to verify the data flow, then toggle it to Active.