# Answer support chat questions from uploaded documents: n8n workflow

> Started by someone submitting a form, and works across in-memory vectors. It puts OpenAI behind a retrieval step, so answers are drawn from documents you...

Source: https://millionrounds.com/workflow/answer-support-chat-questions-from-uploaded-documents (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 support chat questions from uploaded documents

Started by someone submitting a form, and works across in-memory vectors. It puts OpenAI behind a retrieval step, so answers are drawn from documents you supply rather than from the model alone. 13 steps: a working afternoon to understand properly.

Medium Calls a model: OpenAI Retrieval

[Download free](https://millionrounds.com/login?next=%2Fapp%2Fworkflow%2Fanswer-support-chat-questions-from-uploaded-documents)

**13 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 9 Logic 1

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

- 1 **Upload files to the knowledge base** Form trigger *Starts it*
- 2 **Embeddings - OpenAI** Embeddings Open Ai *Model*
- 3 **Data Loader - Split uploaded files** Document Default Data Loader *Model*
- 4 **Chat model - Knowledge base agent** Lm Chat Open Ai *Model*
- 5 **Receive chat message** Webhook *Starts it*
- 6 **Chat model - Support agent** Lm Chat Open Ai *Model*
- 7 **Conversation memory** Memory Buffer Window *Model*
- 8 **Store documents in vector store** Vector Store In Memory *Model*
- 9 **Search knowledge base** Vector Store In Memory *Model*
- 10 **Knowledge base agent** Agent Tool *Model*
- 11 **Support agent** Agent *Model*
- 12 **Format reply** Set *Logic*
- 13 **Send reply** Respond To Webhook *Starts it*

## How it's built

- **Starts on:** Someone submitting a form
- **Steps:** 13
- **Size:** Medium: a working afternoon
- **Connects to:** in-memory vectors
- **Model:** OpenAI
- **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 in-memory vectors account, and a key for OpenAI. 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 OpenAI. 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. 13 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 13 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-support-chat-questions-from-uploaded-documents)
- **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.

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

## Workflows like it

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

- [**Run a RAG support copilot with Claude and OpenAI** 13 steps · calls a model · Gmail, in-memory vectors](https://millionrounds.com/workflow/run-a-rag-support-copilot-with-claude-and-openai)
- [**Answer code of conduct questions in Slack with OpenAI and RAG** 14 steps · calls a model · Google Drive, Slack](https://millionrounds.com/workflow/answer-code-of-conduct-questions-in-slack-with-openai-and-ra)
- [**Answer support questions from a knowledge base with OpenAI** 12 steps · calls a model · in-memory vectors](https://millionrounds.com/workflow/answer-support-questions-from-a-knowledge-base-with-openai)
- [**WhatsApp support bot with Gemini and in-memory vectors** 12 steps · calls a model · in-memory vectors](https://millionrounds.com/workflow/whatsapp-support-bot-with-gemini-and-in-memory-vectors)
- [**Dual-path customer support system with Google Sheets** 15 steps · calls a model · Google Sheets, in-memory vectors](https://millionrounds.com/workflow/dual-path-customer-support-system-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)