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Log and triage inbound calls with Twilio, Whisper, Claude, and Google Sheets

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Log and triage inbound calls with Twilio, Whisper, Claude, and Google Sheets preview
Open on n8n.io

1. Workflow Overview

Quick overview This workflow handles Twilio recording complete webhooks, downloads the call audio, transcribes it with OpenAI Whisper, and uses Anthropic Claude to extract structured call insights....

Best for

  • Ticket Management automation workflows
  • AI Summarization automation workflows
  • advanced n8n builders looking for reusable templates

Tools used

n8n-nodes-base.stickynote, n8n-nodes-base.webhook, n8n-nodes-base.set, n8n-nodes-base.httprequest, n8n-nodes-base.code, n8n-nodes-base.googlesheets, n8n-nodes-base.if, n8n-nodes-base.gmail

Source and attribution

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

Original n8n.io source

1.1 Workflow description

Title
Log and triage inbound calls with Twilio, Whisper, Claude, and Google Sheets
Workflow name
Log and triage inbound calls with Twilio, Whisper, Claude, and Google Sheets

Quick overview

This workflow handles Twilio recording-complete webhooks, downloads the call audio, transcribes it with OpenAI Whisper, and uses Anthropic Claude to extract structured call insights. It logs every call to Google Sheets, emails urgent calls via Gmail, and returns an empty TwiML response to close the Twilio request.

How it works

  1. Receives a Twilio Recording Status Callback webhook when an inbound call recording is completed.
  2. Normalizes the webhook payload to capture the call SID, caller/recipient numbers, recording URL, duration, and a timestamp.
  3. Downloads the MP3 recording from Twilio using HTTP Basic Auth and sends the audio to OpenAI Whisper to generate a transcript.
  4. Sends the transcript and call metadata to Anthropic Claude and parses its JSON output into fields like intent, urgency, summary, sentiment, and whether a callback is needed.
  5. Appends the combined call metadata, transcript, and AI analysis to a Google Sheets tab for logging and reporting.
  6. If the call is flagged as urgent (high urgency or a complaint), sends a detailed HTML alert email via Gmail.
  7. Returns an empty TwiML XML response to Twilio to complete the webhook response cleanly.

Setup

  1. Configure Twilio call recording (TwiML Bin/Studio/Voice setup) and set the Recording Status Callback URL to this workflow’s webhook endpoint.
  2. Add Twilio HTTP Basic Auth credentials in n8n (Account SID as username and Auth Token as password) and attach them to the Twilio recording download request.
  3. Add an OpenAI API key as an HTTP Header Auth credential (Authorization: Bearer ) for the Whisper transcription request.
  4. Add an Anthropic API key as an HTTP Header Auth credential (x-api-key: ) for the Claude messages request.
  5. Connect Google Sheets credentials, replace the spreadsheet ID, and create an “Inbound Calls” sheet with columns matching the logged fields.
  6. Connect Gmail credentials and replace the recipient address ([email protected]) with the operator inbox for urgent-call alerts.

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 - Sticky Note

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

Block 2 - Sticky Note1

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

Block 3 - Sticky Note2

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

Block 4 - Sticky Note3

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

Block 5 - Sticky Note4

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

Block 6 - Sticky Note5

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

Block 7 - Receive Call Recording

Type / Role
n8n-nodes-base.webhook - webhook
Config choices
Version 2

Block 8 - Set Call Metadata

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

Block 9 - Download Call Recording

Type / Role
n8n-nodes-base.httpRequest - httpRequest
Config choices
Version 4.2

Block 10 - Transcribe Audio with Whisper

Type / Role
n8n-nodes-base.httpRequest - httpRequest
Config choices
Version 4.2

Block 11 - Analyze Intent with AI

Type / Role
n8n-nodes-base.httpRequest - httpRequest
Config choices
Version 4.2

Block 12 - Merge Analysis with Metadata

Type / Role
n8n-nodes-base.code - code
Config choices
Version 2

Block 13 - Append Call Data to Sheets

Type / Role
n8n-nodes-base.googleSheets - googleSheets
Config choices
Version 4.5

Block 14 - Evaluate Urgent Call Status

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

Block 15 - Dispatch Urgent Email Alert

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

Block 16 - Respond with TwiML Message

Type / Role
n8n-nodes-base.respondToWebhook - respondToWebhook
Config choices
Version 1.1

3. Summary Table

Workflow Log and triage inbound calls with Twilio, Whisper, Claude, and Google Sheets
Complexity advanced
Nodes 16
Categories Ticket Management, AI Summarization
Author Milos Vranes
Published 27 May 2026

4. Reproducing the Workflow from Scratch

  1. 1. Download the workflow JSON

    Use the JSON export at /data/workflows/15990/15990.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 Log and triage inbound calls with Twilio, Whisper, Claude, and Google Sheets do?

Quick overview This workflow handles Twilio recording complete webhooks, downloads the call audio, transcribes it with OpenAI Whisper, and uses Anthropic Claude to extract structured call insights....

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 Ticket Management, AI Summarization use case.