MLflow Prompt Registry

Model Context Protocol (MCP) Server for MLflow Prompt Registry, enabling access to prompt templates managed in MLflow.

This server implements the MCP Prompts specification for discovering and using prompt templates from MLflow Prompt Registry. The primary use case is to load prompt templates from MLflow in Claude Desktop, allowing users to instruct Claude conveniently for repetitive tasks or common workflows.

Tools

• list-prompts
  • List available prompts
  • Inputs:
    • cursor (optional string): Cursor for pagination
    • filter (optional string): Filter for prompts
  • Returns: List of prompt objects
• get-prompt
  • Retrieve and compile a specific prompt
  • Inputs:
    • name (string): Name of the prompt to retrieve
    • arguments (optional object): JSON object with prompt variables
  • Returns: Compiled prompt object

Setup

1: Install MLflow and Start Prompt Registry

Install and start an MLflow server if you haven't already to host the Prompt Registry:

pip install mlflow>=2.21.1
mlflow server --port 5000

2: Create a prompt template in MLflow

If you haven't already, create a prompt template in MLflow following this guide.

3: Build MCP Server

npm install
npm run build

4: Add the server to Claude Desktop

Configure Claude for Desktop by editing claude_desktop_config.json:

{
  "mcpServers": {
    "mlflow": {
      "command": "node",
      "args": ["<absolute-path-to-this-repository>/dist/index.js"],
      "env": {
        "MLFLOW_TRACKING_URI": "http://localhost:5000"
      }
    }
  }
}

Make sure to replace the MLFLOW_TRACKING_URI with your actual MLflow server address.