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Human-in-the-Loop Automation with n8n — Liam McGarrigle
Takeaway
n8n's visual workflows plus human-in-the-loop nodes let non-developers build inspectable, fixable agentic automations rather than opaque end-to-end agents.
Summary
- n8n DevRel walks through building a Gmail+Google Calendar management agent in n8n's visual workflow builder with human-in-the-loop approvals.
- n8n predates ChatGPT (2019) as a low-code integration tool — triggers (form, schedule, webhook, Slack), action nodes, and inline JavaScript when needed.
- Emphasizes that the differentiator in the agent-builder space is observability and the ability to tweak workflows when they go wrong, not just ease of build.
- Workshop is hands-on with self-hosted vs cloud setup, version 214.2, and a year of Cloud Pro provided to attendees.
n8nautomationhuman-in-the-loop
Original description
What does it actually take to build an AI workflow that can do useful work without becoming a black box? This workshop shows how to build secure, human-in-the-loop automations in n8n, using a Gmail and Google Calendar management agent as the concrete example. Liam McGarrigle walks through how to wire it together with n8n's visual automation system and combine chat triggers, tools, credentials, approvals, and access control into a workflow that can actually be observed and controlled. The session also covers how to extend the agent beyond the demo, including Slack-based interaction, scheduled runs, sub-workflows, and specialized subagents for larger real-world automation systems. Speaker info: - https://www.linkedin.com/in/liam-mcgarrigle - https://github.com/liamdmcgarrigle