Convert documents to Markdown with MinerU API and GPT-4o-mini
Needs changesNeeds changes. This template uses 1 thing(s) that n8n 3.0 removes: AI Agent v1 (old agent modes). 1 breaking item(s) found. Static check, last run 2026-10-19.
What this workflow does
This AI workflow has 8 nodes and runs when a chat message arrives. Along the way it connects MCP Client and OpenAI Chat Model.
How it runs
Trigger: When a chat message arrives.
- 初始化files (Edit Fields (Set)): sets 2 fields: files, index
- If: checks a condition and branches into true / false
- 文件保存到本地 (Read/Write Files from Disk): writes a file to disk
- AI Agent: runs an AI agent, with model: OpenAI Chat Model; 1 tool (MCP Client)
- 添加文件路径到 (Edit Fields (Set)): sets 2 fields: files, index
Services it uses
Before you upgrade to n8n 3.0
1 thing in this workflow is removed in n8n 3.0. Fix it before you upgrade:
- AI Agent v1 (old agent modes) in AI Agent (v1.9): replace with Latest AI Agent node (Tools Agent). For SQL Agent, use a Postgres or MySQL tool with a recent AI Agent.
Rather not rewrite it? Many of these flows can be rebuilt in Make (free plan).
| Removed in 3.0 | Replace with |
|---|---|
| AI Agent v1 (old agent modes) AI Agent (v1.9) | Latest AI Agent node (Tools Agent). For SQL Agent, use a Postgres or MySQL tool with a recent AI Agent. |
Nodes used (7)
- If
n8n-nodes-base.if - Edit Fields (Set)
n8n-nodes-base.set - MCP Client Tool
@n8n/n8n-nodes-langchain.mcpClientTool - OpenAI Chat Model
@n8n/n8n-nodes-langchain.lmChatOpenAi - AI Agent
@n8n/n8n-nodes-langchain.agent - Chat Trigger
@n8n/n8n-nodes-langchain.chatTrigger - Read/Write Files from Disk
n8n-nodes-base.readWriteFile
From the author
How it works - This workflow automates the conversion of various document formats (such as PDF, Word, and PPT) into Markdown. It connects to the MinerU API service, which leverages OCR, formula, and table recognition to produce high-quality output. Users can…