🧠 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!