🧠 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
🧾 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:

const config = {
  THINK: {
    CONTEXT: ``, // Add the necessary context to the AI.
    CONSTRAINTS: [`Rule 1`, `Rule 2`], // here 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!