n8n Review: The Self-Hosted Automation Engine

Most automation tools charge you by the operation. Send a Slack message? One operation. Update a Google Sheet row? Another. Run a thousand workflows a month and the math gets ugly fast. n8n flips this model entirely: host it yourself and run as many operations as your server can handle without paying a cent.

I set up n8n on a $20 VPS three months ago and have been running it alongside a paid Zapier account to compare. Here's where it shines and where it still needs work.

Setup and Self-Hosting

Getting n8n running takes about 15 minutes if you know Docker. The one-liner on their docs works: docker run -p 5678:5678 n8nio/n8n. For production use you'll want to set up Postgres as the database backend and configure HTTPS through a reverse proxy, which adds an hour or two.

I hit one snag during setup. The default SQLite database caused noticeable slowdowns after about 200 workflow executions a day. Swapping to Postgres fixed it immediately, and the migration took five minutes. The docs mention this in the production checklist, but it's easy to miss.

If you don't want to manage a server, n8n Cloud handles hosting for you starting at €20/month for 2,500 executions. It's simpler, though the cloud dashboard feels less mature than the self-hosted version. Billing notifications and team invite flows still have some quirks.

The Workflow Builder

The editor is where n8n earns its reputation. Each workflow is a canvas of connected nodes. You drag a trigger (webhook, schedule, form submission) onto the canvas, then chain action nodes. The visual feedback is immediate: run a test step and you see the raw JSON output from each node inline.

This matters more than it sounds like. When a Zapier zap breaks, you stare at a linear list of steps and guess which one failed. n8n shows you the exact data each node received and sent, which cuts debugging time significantly.

The node library covers 400 services. It's not Zapier's 7,000. Google Sheets, Slack, Notion, Gmail, Airtable, and OpenAI are all well-supported. For everything else there's an HTTP Request node that can talk to any REST API. Between that and the Webhook node for receiving data, you can integrate with basically anything that has an API.

The standout feature is the Code node. You can drop plain JavaScript into any workflow step to transform data in ways the built-in nodes can't. Need to parse a weird date format, merge two JSON payloads with custom logic, or call a SOAP endpoint? Write it in the Code node. It turns n8n from a no-code tool into a low-code tool, which is a meaningful upgrade.

AI Features

n8n added an AI node category that connects to OpenAI, Anthropic, and Hugging Face. You can build workflows that summarize incoming emails with GPT-4, classify support tickets, or generate reports from spreadsheet data. The LangChain integration lets you chain LLM calls with tool use.

It works well enough, though the AI nodes are clearly newer than the core automation ones. Error messages can be vague when an API call fails, and rate limiting is on you to handle. If you need production-grade AI automation, n8n gets you most of the way there but expect some trial and error.

Pricing and Value

n8n's pricing model is its strongest selling point:

At 10,000 operations, Zapier costs about $300/month with comparable features. n8n on a $20 VPS costs exactly $20. The gap grows wider the more you automate.

The tradeoff is maintenance. You are responsible for n8n's uptime, security patches, and database backups. My instance has needed attention twice in three months: once for a version upgrade that broke a Slack node configuration, and once when the disk filled up with execution logs. Neither took more than 30 minutes to fix, but they happened.

Who Should Use n8n

Start with n8n if you're technical enough to run Docker, want to automate at volume, or handle sensitive data that can't leave your infrastructure. The cost savings are real and the product is solid.

Stick with Zapier or Make if you want zero maintenance overhead, need a specific integration n8n doesn't have, or don't want to think about server uptime. The managed competitors earn their markup on convenience.

For agencies building client automations, n8n is close to a no-brainer. You pay one server cost and run unlimited workflows across unlimited clients. Just make sure each client gets its own Docker instance for data isolation.