MinIO Model-Context Protocol (MCP)

This project implements a Model-Context Protocol (MCP) server and client for MinIO object storage. It provides a standardized way to interact with MinIO.

Features

Server

Resources

Exposes MinIO data through Resources. The server can access and provide:

• Text files (automatically detected based on file extension)

• Binary files (handled as application/octet-stream)

• Bucket contents (up to 1000 objects per bucket)

Tools

• ListBuckets

  • Returns a list of all buckets owned by the authenticated sender of the request

  • Optional parameters: start_after (pagination), max_buckets (limit results)

• ListObjects

  • Returns some or all (up to 1,000) of the objects in a bucket with each request

  • Required parameter: bucket_name

  • Optional parameters: prefix (filter by prefix), max_keys (limit results)

• GetObject

  • Retrieves an object from MinIO

  • Required parameters: bucket_name, object_name

• PutObject

  • Uploads a file to MinIO bucket using fput method

  • Required parameters: bucket_name, object_name, file_path

Client

The project includes multiple client implementations:

1. Basic Client - Simple client for direct interaction with the MinIO MCP server

2. Anthropic Client - Integration with Anthropic's Claude models for AI-powered interactions with MinIO

Related MCP server: MCP File Server

Installation

1. Clone the repository:

2. Install dependencies using pip:

Or using uv:

Environment Configuration

Create a .env file in the root directory with the following configuration:

Usage

Running the Server

The server can be run directly:

Using the Basic Client

Using the Anthropic Client

1. Configure the servers in src/client/servers_config.json:

2. Run the client:

3. Interact with the assistant:

   • The assistant will automatically detect available tools

   • You can ask questions about your MinIO data

   • The assistant will use the appropriate tools to retrieve information

4. Exit the session:

   • Type quit or exit to end the session

Integration with Claude Desktop

You can integrate this MCP server with Claude Desktop:

Configuration

On MacOS: ~/Library/Application\ Support/Claude/claude_desktop_config.json
On Windows: %APPDATA%/Claude/claude_desktop_config.json

Development

Project Structure

Running Tests

Code Formatting

Debugging

Since MCP servers run over stdio, debugging can be challenging. For the best debugging experience, we recommend using the MCP Inspector:

Upon launching, the Inspector will display a URL that you can access in your browser to begin debugging.

License

This project is licensed under the MIT License - see the LICENSE file for details.