How I Built an AI Agent That Calls Other AI Agents in n8n (Like a Real Team)

A while ago, I showed you how to create powerful AI automations in n8n using a single agent to solve one problem — like writing cold emails or summarizing documents. That alone helped many of you build $4K–$5K/month client workflows.

But what if I told you… You can go a step further — and build an AI agent that acts like a manager, calling multiple specialized agents just like a real team?

In today’s automation, that’s exactly what I did. And it’s .

What I Built

Imagine this:

One main AI assistant receives a prompt (like a manager getting a task).

It figures out which sub-agent is best suited (cold email? sales letter?).

It calls that agent, gets the output, and logs the results in a Google Doc.

That’s multi-agent orchestration. And it’s all done inside n8n using OpenAI assistants, subworkflows, and chat-based routing.

Key Components

Main AI Agent (Copy Assistant)

Built using n8n’s AI Agent node

Uses GPT-4.1 mini to analyze the task

Decides whether to call Cold Email Writer or Sales Letter Writer

2. Sub workflows for Each Agent

Each agent lives in its own n8n workflow

Uses OpenAI’s Assistant API

Takes a prompt and returns templated copy

3. Workflow Trigger & Chat Interface

User types into a chat node

Message gets routed to the correct agent via logic

Output is saved to Google Docs

Why It’s Powerful

This structure mimics real company teams:

One “manager” (main agent) handles communication

Specialized “employees” (sub-agents) handle execution

And the best part?

You can swap agents in or out, link this to your website, or sell it as a productized service.

Tech Stack Used

n8n (for workflow orchestration)

OpenAI Assistants API

Google Docs (to log output)

GPT-4.1 mini model

Agents: Cold Email Writer & Sales Letter Assistant

Real-World Use Case

In this example, we generated 5 cold email templates targeting VHO AI customers in seconds. The quality? Close to pro-level copywriting.

This exact setup could:

Power a copywriting SaaS

Replace junior marketing roles

Act as an internal content creation engine

Final Thoughts

If you’ve ever dreamed of building AI systems that simulate how real teams operate, this is the blueprint. It’s modular, scalable, and deeply human-like in its task delegation.

And this is just the beginning. Next, I’ll show how to sell these agents, plug them into websites, and automate full client workflows.

🔔 Want More?

If you’re ready to turn AI agents into a business — or want to learn the inner workings of n8n + OpenAI — follow me here and subscribe on

https://www.youtube.com/watch?v=_zn_fCAIo8Y

Let’s build.