Turn meeting transcripts or audio into Google Docs action summaries with Groq Whisper, OpenRouter, and Google Docs

Meeting Transcript → AI Summary & Google Doc (Text + Audio)

Turn raw meeting transcripts or audio recordings into structured, ready-to-share Google Docs — automatically. No manual note-taking, no copy-pasting.

What It Does

Send a meeting transcript (text or audio file) via a webhook and this workflow will:

• Auto-detect whether you sent text or an audio file
• Transcribe audio using Groq Whisper (free — 28,800 sec/day)
• Use AI to extract a structured summary via OpenRouter
• Create a formatted Google Doc with 4 clearly defined sections:
• 📌 Executive Summary (2–3 sentences)
• ✅ Key Decisions Made
• 📋 Action Items (with Owner & Deadline)
• 🗓️ Suggested Next Meeting Agenda
• Return the Google Doc link instantly in the webhook response

Who Is This For

• Teams and managers who want automatic meeting notes without extra tools
• Anyone recording calls or meetings who needs structured follow-ups fast
• Operations and project managers tracking decisions and action items

How It Works

1. Trigger — Send a POST request to the webhook with either:

• JSON body: transcript, meeting_title, meeting_date
• Multipart form-data: audio file (.mp3, .mp4, .wav, .m4a)

1. Route — An If node detects whether text or audio was sent
2. Transcribe (audio path only) — Groq Whisper transcribes the audio
3. Summarize — OpenRouter AI (GPT-4o-mini) structures content into JSON
4. Format — A Code node builds the final document content
5. Publish — A Google Doc is created and the summary is written into it
6. Respond — Webhook returns the doc title, URL, and summary preview

Requirements

Setup Steps

1. Groq Credential

• Get a free API key at console.groq.com
• In n8n → Settings → Credentials → New → Header Auth
• Set Name: Authorization, Value: Bearer YOUR_GROQ_KEY
• Select this credential in the Transcribe Audio node

1. OpenRouter Credential

• Get a free API key at openrouter.ai
• In n8n → Settings → Credentials → New → Header Auth
• Set Name: Authorization, Value: Bearer YOUR_OPENROUTER_KEY
• Select this credential in the Call AI API node

1. Google Docs

• In n8n → Settings → Credentials → New → Google Docs OAuth2
• Sign in and allow access
• Select this credential in both Google Docs nodes

1. Activate the workflow and copy the webhook URL from the trigger node

Example Request (Text)

POST to your webhook URL with:

{
 "transcript": "John: Let's move the launch to Q3...",
 "meeting_title": "Q2 Planning Sync",
 "meeting_date": "2025-05-05"
}

Example Request (Audio)

POST with multipart/form-data:

• audio → your audio file (.mp3, .mp4, .wav, .m4a)
• meeting_title → optional
• meeting_date → optional