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Send pre-meeting attendee context with OpenAI, Google Calendar, and Slack

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Send pre-meeting attendee context with OpenAI, Google Calendar, and Slack preview
Open on n8n.io

Important notice

This workflow is provided as-is. Please review and test before using in production.

1. Workflow Overview

Overiew This workflow builds an AI meeting assistant who sends information dense pre meeting notifications for a user's upcoming meetings. How It Works A scheduled trigger fires hourly and checks f...

Best for

  • Personal Productivity automation workflows
  • AI Chatbot automation workflows
  • advanced n8n builders looking for reusable templates

Tools used

n8n-nodes-base.gmail, n8n-nodes-base.set, n8n-nodes-base.googlecalendar, @n8n/n8n-nodes-langchain.informationextractor, n8n-nodes-base.stickynote, n8n-nodes-base.scheduletrigger, n8n-nodes-base.if, n8n-nodes-base.splitout

Source and attribution

This workflow is cataloged by N8N Workflows and links back to its original n8n.io source page by Satoshi.

Original n8n.io source

1.1 Workflow description

Title
Send pre-meeting attendee context with OpenAI, Google Calendar, and Slack
Workflow name
Send pre-meeting attendee context with OpenAI, Google Calendar, and Slack

Overiew

This workflow builds an AI meeting assistant who sends information-dense pre-meeting notifications for a user's upcoming meetings.

How It Works

  • A scheduled trigger fires hourly and checks for upcoming meetings within the hour.
  • When found, a search for last correspondence + recent activity is performed for each attendee.
  • Using available correspondance, an AI/LLM is used to summarize this information and generate a short notification message which should help the user prepare for the meeting.
  • The notification is finally sent to the user's Slack.

Set up Steps

Google Cloud

Create the credentials and replace them in the workflow. Please enable the following APIs:

  • Gmail API
  • Google Calendar API
OpenAI
  • Create the credentials as instructed
  • Replace your credentials and connect.
Slack
  • Create the credentials as instructed
  • Replace your credentials and connect.

1.2 Logical Blocks

This catalog entry is organized from the workflow JSON. The node-level section below shows the executable blocks available for review before importing the template.

2. Block-by-Block Analysis

Block 1 - Get Message Contents

Type / Role
n8n-nodes-base.gmail - gmail
Config choices
Version 2.1

Block 2 - Simplify Emails

Type / Role
n8n-nodes-base.set - set
Config choices
Version 3.4

Block 3 - Check For Upcoming Meetings

Type / Role
n8n-nodes-base.googleCalendar - googleCalendar
Config choices
Version 1.2

Block 4 - Extract Attendee Information

Type / Role
@n8n/n8n-nodes-langchain.informationExtractor - informationExtractor
Config choices
Version 1

Block 5 - Get Last Correspondence

Type / Role
n8n-nodes-base.gmail - gmail
Config choices
Version 2.1

Block 6 - Sticky Note

Type / Role
n8n-nodes-base.stickyNote - stickyNote
Config choices
Version 1

Block 7 - Schedule Trigger

Type / Role
n8n-nodes-base.scheduleTrigger - scheduleTrigger
Config choices
Version 1.2

Block 8 - Sticky Note1

Type / Role
n8n-nodes-base.stickyNote - stickyNote
Config choices
Version 1

Block 9 - Sticky Note3

Type / Role
n8n-nodes-base.stickyNote - stickyNote
Config choices
Version 1

Block 10 - Sticky Note4

Type / Role
n8n-nodes-base.stickyNote - stickyNote
Config choices
Version 1

Block 11 - Sticky Note5

Type / Role
n8n-nodes-base.stickyNote - stickyNote
Config choices
Version 1

Block 12 - Return Email Success

Type / Role
n8n-nodes-base.set - set
Config choices
Version 3.4

Block 13 - Has Emails?

Type / Role
n8n-nodes-base.if - if
Config choices
Version 2.2

Block 14 - Attendees to List

Type / Role
n8n-nodes-base.splitOut - splitOut
Config choices
Version 1

Block 15 - Has Email Address?

Type / Role
n8n-nodes-base.if - if
Config choices
Version 2.2

Block 16 - Sticky Note12

Type / Role
n8n-nodes-base.stickyNote - stickyNote
Config choices
Version 1

Block 17 - Sticky Note13

Type / Role
n8n-nodes-base.stickyNote - stickyNote
Config choices
Version 1

Block 18 - Correspondance Recap Agent

Type / Role
@n8n/n8n-nodes-langchain.chainLlm - chainLlm
Config choices
Version 1.4

Block 19 - Attendee Research Agent

Type / Role
@n8n/n8n-nodes-langchain.chainLlm - chainLlm
Config choices
Version 1.4

Block 20 - OpenAI Model

Type / Role
@n8n/n8n-nodes-langchain.lmChatOpenAi - lmChatOpenAi
Config choices
Version 1

Block 21 - Send a message

Type / Role
n8n-nodes-base.slack - slack
Config choices
Version 2.3

Block 22 - OpenAI Model3

Type / Role
@n8n/n8n-nodes-langchain.lmChatOpenAi - lmChatOpenAi
Config choices
Version 1

Block 23 - OpenAI Model2

Type / Role
@n8n/n8n-nodes-langchain.lmChatOpenAi - lmChatOpenAi
Config choices
Version 1

Block 24 - Return Email Error

Type / Role
n8n-nodes-base.set - set
Config choices
Version 3.4

Showing the first 24 of 25 workflow blocks. Download the JSON for the full node graph.

3. Summary Table

Workflow Send pre-meeting attendee context with OpenAI, Google Calendar, and Slack
Complexity advanced
Nodes 25
Categories Personal Productivity, AI Chatbot
Author Satoshi
Published 23 Nov 2025

4. Reproducing the Workflow from Scratch

  1. 1. Download the workflow JSON

    Use the JSON export at /data/workflows/11148/11148.json as the source template for this automation.

  2. 2. Import the template into n8n

    Open n8n, import the downloaded JSON, and review each node before activating the workflow.

  3. 3. Configure credentials and variables

    Replace placeholder credentials, API keys, webhook URLs, account IDs, and environment-specific values with your own settings.

  4. 4. Test with sample data

    Run the workflow manually or in a staging workspace, inspect node output, and confirm downstream systems receive the expected data.

  5. 5. Activate and monitor

    Enable the workflow only after testing, then monitor executions, errors, and rate limits during the first production runs.

5. General Notes & Resources

Review imported nodes carefully before activation. This catalog entry is intended to help you inspect the workflow structure, understand required services, and find related templates faster.

Node names, credentials, schedules, webhook paths, and external service limits may need adjustment for your workspace.

Frequently asked questions

What does Send pre-meeting attendee context with OpenAI, Google Calendar, and Slack do?

Overiew This workflow builds an AI meeting assistant who sends information dense pre meeting notifications for a user's upcoming meetings. How It Works A scheduled trigger fires hourly and checks f...

What do I need before importing this workflow?

Review the workflow JSON, configure any required credentials in n8n, and test the automation in a safe workspace before using it in production.

Can I customize this workflow?

Yes. Use the block-by-block analysis and the downloadable JSON to inspect each node, then adjust credentials, prompts, schedules, filters, or destinations for your Personal Productivity, AI Chatbot use case.