MCP Mistral OCR

MCP Mistral OCR

An MCP server that provides OCR capabilities using Mistral AI's OCR API. This server can process both local files and URLs, supporting images and PDFs.

Features

• Process local files (images and PDFs) using Mistral's OCR
• Process files from URLs with explicit file type specification
• Support for multiple file formats (JPG, PNG, PDF, etc.)
• Results saved as JSON files with timestamps
• Docker containerization
• UV package management

Environment Variables

• MISTRAL_API_KEY: Your Mistral AI API key
• OCR_DIR: Directory path for local file processing. Inside the container, this is always mapped to /data/ocr

Installation

Using Docker

1. Build the Docker image:

docker build -t mcp-mistral-ocr .

2. Run the container:

docker run -e MISTRAL_API_KEY=your_api_key -e OCR_DIR=/data/ocr -v /path/to/local/files:/data/ocr mcp-mistral-ocr

Local Development

1. Install UV package manager:

pip install uv

2. Create and activate virtual environment:

uv venv
source .venv/bin/activate  # On Unix
# or
.venv\Scripts\activate  # On Windows

3. Install dependencies:

uv pip install .

Claude Desktop Configuration

Add this configuration to your claude_desktop_config.json:

{
  "mcpServers": {
    "mistral-ocr": {
      "command": "docker",
      "args": [
        "run",
        "-i",
        "--rm",
        "-e",
        "MISTRAL_API_KEY",
        "-e",
        "OCR_DIR",
        "-v",
        "C:/path/to/your/files:/data/ocr",
        "mcp-mistral-ocr:latest"
      ],
      "env": {
        "MISTRAL_API_KEY": "<YOUR_MISTRAL_API_KEY>",
        "OCR_DIR": "C:/path/to/your/files"
      }
    }
  }
}

Available Tools

1. process_local_file

Process a file from the configured OCR_DIR directory.

{
    "name": "process_local_file",
    "arguments": {
        "filename": "document.pdf"
    }
}

2. process_url_file

Process a file from a URL. Requires explicit file type specification.

{
    "name": "process_url_file",
    "arguments": {
        "url": "https://example.com/document",
        "file_type": "image"  // or "pdf"
    }
}

Output

OCR results are saved in JSON format in the output directory inside OCR_DIR. Each result file is named using the following format:

• For local files: {original_filename}_{timestamp}.json
• For URLs: {url_filename}_{timestamp}.json or url_document_{timestamp}.json if no filename is found in the URL

The timestamp format is YYYYMMDD_HHMMSS.

Supported File Types

• Images: JPG, JPEG, PNG, GIF, WebP
• Documents: PDF and other document formats supported by Mistral OCR

Limitations

• Maximum file size: 50MB (enforced by Mistral API)
• Maximum document pages: 1000 (enforced by Mistral API)