# Answer backlog questions from Slack with Supabase and Gemini: n8n workflow

> Started by someone submitting a form, and works across Supabase vectors. It puts Gemini and OpenRouter behind a retrieval step, so answers are drawn from...

Source: https://millionrounds.com/workflow/answer-backlog-questions-from-slack-with-supabase-and-gemini (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)

# Answer backlog questions from Slack with Supabase and Gemini

Started by someone submitting a form, and works across Supabase vectors. It puts Gemini and OpenRouter behind a retrieval step, so answers are drawn from documents you supply rather than from the model alone. 12 steps: a working afternoon to understand properly.

Medium Calls a model: Gemini, OpenRouter Retrieval

[Download free](https://millionrounds.com/login?next=%2Fapp%2Fworkflow%2Fanswer-backlog-questions-from-slack-with-supabase-and-gemini)

**12 steps** Medium: a working afternoon

**0** Branches: places the flow splits

**0** Loops or waits

**1** Service it connects to

## The flow

Starts it 3 Model 7 Service 2

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

- 1 **On form submission** Form trigger *Starts it*
- 2 **Default Data Loader** Document Default Data Loader *Model*
- 3 **Embeddings Google Gemini** Embeddings Google Gemini *Model*
- 4 **Slack Slash Command Trigger** Webhook *Starts it*
- 5 **OpenRouter Chat Model** Lm Chat Open Router *Model*
- 6 **Embeddings Google Gemini1** Embeddings Google Gemini *Model*
- 7 **Extract from File** Extract From File *Service*
- 8 **Supabase Vector Store** Vector Store Supabase *Model*
- 9 **Respond to Webhook** Respond To Webhook *Starts it*
- 10 **RAG Agent** Agent *Model*
- 11 **search_backlog** Vector Store Supabase *Model*
- 12 **Post Answer to Slack** Http Request *Service*

## How it's built

- **Starts on:** Someone submitting a form
- **Steps:** 12
- **Size:** Medium: a working afternoon
- **Connects to:** Supabase vectors
- **Model:** Gemini, OpenRouter
- **Retrieval:** Answers are drawn from documents you supply, not from the model alone

## Questions

What does it need to run?

An n8n account, plus your own Supabase vectors account, and a key for Gemini and OpenRouter. You connect your own accounts after importing it; none are included.

What starts it?

It starts on someone submitting a form.

Does it use AI?

Yes. It calls Gemini and OpenRouter. Its answers draw on documents you give it, not on the model alone. Model calls are billed by the provider, not by n8n.

How long does it take to set up?

Plan an afternoon. 12 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 12 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%2Fanswer-backlog-questions-from-slack-with-supabase-and-gemini)
- **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.

## Connects to

Each opens the other workflows that use it.

[Supabase vectors](https://millionrounds.com/workflows?service=Supabase+vectors#library)

## Workflows like it

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

- [**RAG: Support Claim Playbook Assistant with Slack** 12 steps · calls a model · Google Drive, Slack](https://millionrounds.com/workflow/rag-support-claim-playbook-assistant-with-slack)
- [**Build a support RAG chatbot for Volta Bikes with OpenAI** 14 steps · calls a model · Supabase vectors](https://millionrounds.com/workflow/build-a-support-rag-chatbot-for-volta-bikes-with-openai)
- [**Draft personalized Outlook support email replies** 10 steps · calls a model · Google Sheets, Outlook](https://millionrounds.com/workflow/draft-personalized-outlook-support-email-replies)
- [**AI-powered Zendesk support responses with RAG and OpenAI** 9 steps · calls a model · Supabase vectors](https://millionrounds.com/workflow/ai-powered-zendesk-support-responses-with-rag-and-openai)
- [**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 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)