Building AI Agents with n8n and GPT-4

The era of sequential automation is ending. We are now entering the age of agentic workflows.

Why n8n?

n8n provides the perfect visual layer for debugging complex agent states. Unlike purely code-based frameworks like LangChain, n8n allows you to see the data flow in real-time.

INFO

Always use the "AI Agent" node for high-autonomy tasks that require tool selection.

The Core Loop

Input: User trigger (Webhook/Slack/Email).
Context: Fetching relevant data from Supabase or Vector DB.
Execution: GPT-4 selects the right tool.
Output: Result delivered back to the user.

// Example tool function
function getLatestProjects() {
  return fetch('/api/projects').then(res => res.json());
}

Stay tuned for the next post on self-hosting your agent infrastructure.