Convert Documents to Markdown with Mineru API and GPT-4o Mini

This n8n workflow leverages AI to convert various document formats into markdown, providing a structured and easily digestible output. It acts as an AI agent that can process documents and respond to chat messages, making it ideal for tasks requiring intelligent document understanding and transformation.

What it does

This workflow automates the following steps:

1. Listens for Chat Messages: The workflow is triggered by an incoming chat message, indicating a request for document processing.
2. Initializes AI Agent: An AI Agent is instantiated, configured to use an OpenAI Chat Model (specifically GPT-4o Mini) and a custom tool for interacting with the Model Context Protocol (MCP) Client.
3. Processes Document (via MCP Client Tool): The AI Agent uses the "MCP Client Tool" to interact with an external service (likely the Mineru API, as suggested by the directory name) to read and process the input document.
4. Generates Markdown Output: The OpenAI Chat Model, guided by the AI Agent, processes the content retrieved from the document and converts it into a markdown format.
5. Handles File Operations: The workflow includes a "Read/Write Files from Disk" node, suggesting it can either read documents from local storage or save the generated markdown output to disk.
6. Conditional Logic: An "If" node is present, implying that the workflow can apply conditional logic based on the processing results or input parameters, potentially for different output formats or follow-up actions.
7. Edits Fields: A "Edit Fields (Set)" node allows for transformation or manipulation of data fields within the workflow, which could be used to format the markdown output or extract specific information.

Prerequisites/Requirements

To use this workflow, you will need:

• n8n Instance: A running n8n instance to import and execute the workflow.
• OpenAI API Key: An API key for OpenAI to use the GPT-4o Mini chat model. This will need to be configured as an n8n credential.
• Mineru API Access (Implied): While not explicitly defined in the JSON, the directory name "mineru-api" strongly suggests that an external service like Mineru API is used by the "MCP Client Tool" for document processing. You would likely need an account or access to this API.
• Chat Service Integration: The "Chat Trigger" node implies integration with a chat service (e.g., Slack, Telegram, Discord) from which messages will be received.

Setup/Usage

1. Import the workflow: Download the provided JSON and import it into your n8n instance.
2. Configure Credentials:
   • Set up your OpenAI API Key as an HTTP Bearer Token or API Key credential in n8n.
   • Configure any necessary credentials for the MCP Client Tool or Mineru API, if required.
3. Configure Chat Trigger: Set up the "When chat message received" trigger to listen for messages from your desired chat service.
4. Customize AI Agent: Review and adjust the "AI Agent" and "OpenAI Chat Model" configurations as needed, including the model parameters or system prompts for optimal markdown conversion.
5. Configure File Operations: Adjust the "Read/Write Files from Disk" node to specify the input document location or the output markdown file path.
6. Activate the Workflow: Once configured, activate the workflow. It will now automatically process documents received via chat messages, converting them to markdown.