# Convert Supabase support FAQs to audio with Google Cloud TTS: n8n workflow

> Started by another system calling it. It calls services over plain HTTP rather than through connectors.

Source: https://millionrounds.com/workflow/convert-supabase-support-faqs-to-audio-with-google-cloud-tts (Millionrounds; every figure on the page links to its filing or article)

[Automation library](https://millionrounds.com/workflows) · [Customer support](https://millionrounds.com/workflows?category=Customer+support#library)

# Convert Supabase support FAQs to audio with Google Cloud TTS

Started by another system calling it. It calls services over plain HTTP rather than through connectors. 16 steps, 1 loop or waits: a working afternoon to understand properly.

Medium

[Download free](https://millionrounds.com/login?next=%2Fapp%2Fworkflow%2Fconvert-supabase-support-faqs-to-audio-with-google-cloud-tts)

**16 steps** Medium: a working afternoon

**0** Branches: places the flow splits

**1** Loop or waits

**0** Services by connector: it calls them over plain HTTP

## The flow

Starts it 2 Logic 8 Service 6

The steps in the order they run, from what starts it.

- 1 **Webhook, Receive FAQ Audio Job Request** Webhook *Starts it*
- 2 **Code, Build Teams Card & Summary Object** Code *Logic*
- 3 **Supabase, Read Unprocessed FAQs** Http Request *Service*
- 4 **Microsoft Teams, Send FAQ Audio Summary Card** Http Request *Service*
- 5 **Code, Filter & Split FAQ Rows** Code *Logic*
- 6 **Respond to Webhook, Return JSON Summary** Respond To Webhook *Starts it*
- 7 **Item Lists, Deduplicate by FAQ ID** Item Lists *Logic*
- 8 **Item Lists, Sort by Category then ID** Item Lists *Logic*
- 9 **Code, Build SSML for Each FAQ** Code *Logic*
- 10 **Loop Over Items, Process One FAQ at a Time** Split In Batches *Logic*
- 11 **Google Cloud TTS, Synthesize FAQ Audio** Http Request *Service*
- 12 **Code, Decode Base64 Audio to Binary** Code *Logic*
- 13 **UploadToURL, Host FAQ MP3 on CDN** Http Request *Service*
- 14 **Code, Capture Audio URL + Timestamp** Code *Logic*
- 15 **Webflow, Patch FAQ CMS Item with Audio URL** Http Request *Service*
- 16 **Supabase, Write Audio URL & Status Back** Http Request *Service*

## How it's built

- **Starts on:** Another system calling it
- **Steps:** 16, 1 loop or waits
- **Size:** Medium: a working afternoon
- **Connects to:** Nothing by connector; it calls services over plain HTTP
- **Model:** None. This is plumbing, not judgement

## Questions

What does it need to run?

An n8n account. You connect your own accounts after importing it; none are included.

What starts it?

It starts on another system calling it.

Does it use AI?

No. Every step is fixed logic or a call to a service, so it does the same thing every time.

How long does it take to set up?

Plan an afternoon. 16 steps is enough that you should read each one before running it.

How do I import it?

Copy the workflow, open a new workflow in n8n and paste. The steps appear on the canvas, ready for your own accounts.

**Before you run it**

Nothing here has been tested by us. It is somebody's working automation, read and described from its own steps. Treat the connections it wants as a list of accounts it will touch, and read the 16 steps before you point it at anything that matters.

## Run it in n8n

- **Create your n8n account** Free to start. n8n is where the workflow runs. [Create an n8n account ↗](https://millionrounds.com/n8n)
- **Download the workflow** Free with a Millionrounds account. [Download free](https://millionrounds.com/login?next=%2Fapp%2Fworkflow%2Fconvert-supabase-support-faqs-to-audio-with-google-cloud-tts)
- **Paste it into n8n** Open a new workflow in n8n and paste. Then connect your own accounts.

Stored with the author's traces removed: canvas notes, instance identifiers, saved credential names and any live document they had left behind.

## Workflows like it

Also customer support, with the same services where possible, closest in size first.

- [**AI-powered support ticket classifier with Google Sheets** 16 steps · Email, Google Sheets](https://millionrounds.com/workflow/ai-powered-support-ticket-classifier-with-google-sheets)
- [**Answer customer questions and book jobs with OpenAI RAG** 16 steps · calls a model · Gmail, Google Calendar](https://millionrounds.com/workflow/answer-customer-questions-and-book-jobs-with-openai-rag)
- [**Answer customer questions and book jobs with OpenAI RAG** 16 steps · calls a model · Gmail, Google Calendar](https://millionrounds.com/workflow/answer-customer-questions-and-book-jobs-with-openai-rag-2)
- [**Answer electronics questions with Gemini and SerpAPI** 16 steps · calls a model · Supabase vectors](https://millionrounds.com/workflow/answer-electronics-questions-with-gemini-and-serpapi)
- [**Answer infrastructure questions in Slack with OpenAI** 16 steps · calls a model · Qdrant, Slack](https://millionrounds.com/workflow/answer-infrastructure-questions-in-slack-with-openai)
- [**Answer support FAQs with Gemini and Supabase** 16 steps · calls a model · Google Sheets, Supabase vectors](https://millionrounds.com/workflow/answer-support-faqs-with-gemini-and-supabase)