The glue that connects every tool in the operation — without writing a server, without paying per execution.
Trigger = what fires it · Nodes = what processes it · Action = what delivers it · Self-hosted = unlimited executions
Every digital operation connects tools. CRM, ad platforms, database, WhatsApp, email. When they need to talk to each other, the classic options are three: write an API from scratch, pay for Zapier or Make, or depend on native integrations that never do exactly what you need.
At an agency managing five clients simultaneously, this problem multiplies by five. Each client has their own stack. Each integration becomes a separate account, a separate limit, a separate cost.
The solution we found wasn't hiring a backend dev. It was installing N8N.
N8N is an open-source workflow automation tool. You connect services by dragging nodes in a visual editor — without writing a server from scratch. Each workflow has a trigger and a chain of actions.
Every N8N workflow follows the same model: a trigger fires the execution, nodes process and transform the data, a final action delivers the result. Each node receives the output of the previous one and passes it forward.
→ This workflow replaces an entire Node.js server. No deploy, no dependencies, no extra process running on the VPS besides N8N itself.
At POSTEP, N8N became the default backend for any integration that doesn't justify a dedicated server. Some real examples:
→ Each item on this list would be a separate microservice. With N8N, it's a 3-node workflow.
Zapier and Make charge per execution. With five active clients, an agency can easily reach tens of thousands of operations per month — and the cost scales right along with it.
$49/mo → 2,000 tasks included
$29/mo → 10,000 operations included
$20/mo → 2,500 executions included
included in existing VPS → unlimited executions
The VPS was already paying for the client's infra. N8N is just one more container in the Swarm — no extra cost, unlimited executions.
Install with Docker: docker run -p 5678:5678 n8nio/n8n. Or create an account on n8n.cloud to test without a VPS. Open the editor and explore the available nodes.
Build your first workflow: a webhook that receives a POST and saves to Supabase or sends an email. Goal: understand the trigger → node → action flow.
Identify 2 or 3 integrations you do manually every week. Copying data from one place to another, sending notifications, updating a spreadsheet. Automate those first.
N8N becomes the default backend for any new integration. You stop opening Zapier. Any new webhook starts in N8N by default.
Start with the most tedious workflow you do every week. If you're manually copying data from one place to another, that becomes N8N. The ROI of the first workflow pays back the learning time in under a month.