AI Productivity Assistant in n8n

The problem

Day-to-day admin for a founder or a busy professional is spread across five tools: a search engine for research, a calendar, email, a contact list and a social account. Each task is small, but switching between them all day is not. I wanted one assistant that takes a plain-language request and carries it out across those tools, and I wanted to build it in n8n so the whole thing stays visible and editable as a workflow instead of hidden in code.

What I built

• An n8n agent workflow with OpenAI GPT-4o as the model, covering both embeddings and content generation.
• A web research tool, so the assistant can look into any topic on request.
• Google Calendar integration that creates, updates and deletes events from a conversation.
• Gmail integration that composes and sends email.
• A contact-capture step that saves names and details to Google Sheets.
• A post generator for X (formerly Twitter) that drafts content ready to publish.

How it was delivered

n8n's low-code canvas makes the design explicit: every capability is a tool node attached to the agent, and the agent decides from the request which tool to call. A new capability is a new node rather than a code change, and anyone who opens the workflow can see exactly what the assistant is allowed to do. I published it as an open workflow on GitHub so others can import it and connect their own Google and X accounts.

Outcome

One assistant covering web research, calendar management, email, contact capture and X post generation, built without a custom back end and published as a reusable open workflow. It is a compact demonstration of how far n8n and GPT-4o go for everyday productivity automation.