# Convert documents to Markdown with MinerU API and OpenAI: n8n workflow

> Started by someone opening a chat with it. It calls services over plain HTTP rather than through connectors. It hands the judgement calls to OpenAI.

Source: https://millionrounds.com/workflow/convert-documents-to-markdown-with-mineru-api-and-openai (Millionrounds; every figure on the page links to its filing or article)

[Automation library](https://millionrounds.com/workflows) · [Documents and files](https://millionrounds.com/workflows?category=Documents+and+files#library)

# Convert documents to Markdown with MinerU API and OpenAI

Started by someone opening a chat with it. It calls services over plain HTTP rather than through connectors. It hands the judgement calls to OpenAI. 8 steps, 1 branch: small enough to read in one sitting and change without fear.

Small Calls a model: OpenAI

[Download free](https://millionrounds.com/login?next=%2Fapp%2Fworkflow%2Fconvert-documents-to-markdown-with-mineru-api-and-openai)

**8 steps** Small: readable in one sitting

**1** Branch: places the flow splits

**0** Loops or waits

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

## The flow

Starts it 1 Model 3 Logic 3 Service 1

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

- 1 **MCP Client** Mcp Client Tool *Model*
- 2 **OpenAI Chat Model** Lm Chat Open Ai *Model*
- 3 **When chat message received** Chat trigger *Starts it*
- 4 **AI Agent** Agent *Model*
- 5 **初始化files** Set *Logic*
- 6 **If 还没遍历结束** If *Logic*
- 7 **文件保存到本地** Read Write File *Service*
- 8 **添加文件路径到** Set *Logic*

## How it's built

- **Starts on:** Someone opening a chat with it
- **Steps:** 8, with 1 branch
- **Size:** Small: readable in one sitting
- **Connects to:** Nothing by connector; it calls services over plain HTTP
- **Model:** OpenAI

## Questions

What does it need to run?

An n8n account, and a key for OpenAI. You connect your own accounts after importing it; none are included.

What starts it?

It starts on someone opening a chat with it.

Does it use AI?

Yes. It calls OpenAI. Model calls are billed by the provider, not by n8n.

How long does it take to set up?

Not long. At 8 steps it can be read in one sitting and changed without fear.

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 8 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-documents-to-markdown-with-mineru-api-and-openai)
- **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.

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Also documents and files, with the same services where possible, closest in size first.

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