Master n8n: Install, Configure, and Build AI‑Powered Automated Workflows

Overview

n8n is an open‑source visual workflow automation platform that enables connecting applications, services, and AI capabilities without writing code.

Installation

1. npx

# Download and start n8n
npx n8n

2. Docker

Using a Docker volume (recommended)

# Create a Docker volume (handles permissions automatically)
docker volume create n8n_data
# Run the container
docker run -it --rm --name n8n -p 5678:5678 -v n8n_data:/home/node/.n8n docker.n8n.io/n8nio/n8n

Mounting a host directory

# Create a host directory and set permissions
mkdir data
sudo chown -R 1000:1000 ./data
sudo chmod -R 755 ./data
# Run the container with the host directory mounted
docker run -itd --name n8n -p 5678:5678 -v ./data:/home/node/.n8n docker.n8n.io/n8nio/n8n

Account Registration

Open http://localhost:5678 in a browser, create a user account, and optionally enter a free activation key received by email to unlock premium features.

Core Concepts

Workflow : A series of nodes that can be triggered manually or on a schedule.

Node : The basic building block. Types include trigger nodes, work nodes (e.g., HTTP request, database query), and logic nodes (IF, merge).

Connection : Arrows that define data flow between nodes.

Triggers

Manual execution

Webhook (HTTP request)

Scheduled timer

Form submission

Invocation from another workflow

Work Nodes

AI : Build autonomous agents, summarize or search documents.

Application actions : Operate on Google Sheets, Telegram, Notion, etc.

Data transformation : Filter, map, or convert data.

Flow control : Branch, merge, loops.

Core : Run custom code, make HTTP requests, set webhooks.

Human interaction : Wait for approval or manual input.

Sample Workflow – Weibo Hot Topics

1. Schedule Trigger

Add an On a Schedule trigger and configure it to run every 10 seconds (adjust the TimeZone as needed).

2. HTTP Request

Insert an HTTP Request node to call a Weibo hot‑topic API. Use the Test Step button to verify the raw response.

3. Data Transformation

Add an Edit Fields node, keep the data field, set its type to String, and test the output.

4. AI Agent

Insert an AI Agent node, provide a custom prompt, and drag the previous node’s output into the prompt. Select the DeepSeek model, supply the API token, and test to obtain a summarized result.

5. Send Information

Finally, add an Email node (or a database node) to deliver the AI‑generated summary to a target mailbox.

Running the Workflow

Use the Test Workflow button to validate the flow, then activate the workflow from the homepage. Monitor executions to confirm the workflow runs every 10 seconds.

Workflow Templates

n8n provides a library of ready‑made templates. Click a template, copy the JSON representation, and paste it (Ctrl + V) into a new workflow to import the preset configuration.

Application Integrations

n8n includes dozens of integrations such as MySQL, HTTP, and many SaaS services. Some integrations require a registered account for trial, but documentation and example templates are available.

References

GitHub repository: https://github.com/n8n-io/n8n

Official documentation: https://docs.n8n.io