Kroger MCP server

The Kroger MCP Server is a FastMCP implementation that allows AI assistants like Claude to interact with Kroger's grocery shopping services. It enables searching for stores, browsing products, managing shopping carts, and accessing Kroger's grocery data through a standardized Model Context Protocol interface.

Prerequisites

Before using the Kroger MCP Server, you'll need to obtain Kroger API credentials:

1. Create a developer account on the Kroger Developer Portal
2. Register your application
3. Get your CLIENT_ID, CLIENT_SECRET, and set your REDIRECT_URI

When you first run a tool requiring user authentication, you'll be prompted to authorize your app through your web browser. You're only granting permission to your own registered app.

Installation Options

Option 1: Using uvx with Claude Desktop (Recommended)

Edit Claude Desktop's configuration file:

macOS: ~/Library/Application Support/Claude/claude_desktop_config.json
Linux: ~/.config/Claude/claude_desktop_config.json
Windows: %APPDATA%/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "kroger": {
      "command": "uvx",
      "args": [
        "kroger-mcp"
      ],
      "env": {
        "KROGER_CLIENT_ID": "your_client_id",
        "KROGER_CLIENT_SECRET": "your_client_secret", 
        "KROGER_REDIRECT_URI": "http://localhost:8000/callback",
        "KROGER_USER_ZIP_CODE": "10001"
      }
    }
  }
}

Option 2: Using uv with a Local Clone

First, clone the repository:

git clone https://github.com/CupOfOwls/kroger-mcp

Then, edit Claude Desktop's configuration file with:

{
  "mcpServers": {
    "kroger": {
      "command": "uv",
      "args": [
        "--directory",
        "/path/to/cloned/kroger-mcp",
        "run",
        "kroger-mcp"
      ],
      "env": {
        "KROGER_CLIENT_ID": "your_client_id",
        "KROGER_CLIENT_SECRET": "your_client_secret", 
        "KROGER_REDIRECT_URI": "http://localhost:8000/callback",
        "KROGER_USER_ZIP_CODE": "10001"
      }
    }
  }
}

Option 3: Installing From PyPI

# Install with uv (recommended)
uv pip install kroger-mcp

# Or install with pip
pip install kroger-mcp

Option 4: Installing From Source

# Clone the repository
git clone https://github.com/CupOfOwls/kroger-mcp
cd kroger-mcp

# Install with uv (recommended)
uv sync

# Or install with pip
pip install -e .

Configuration

Create a .env file in your project root or pass environment variables via the JSON config:

# Required: Your Kroger API credentials
KROGER_CLIENT_ID=your_client_id_here
KROGER_CLIENT_SECRET=your_client_secret_here
KROGER_REDIRECT_URI=http://localhost:8000/callback

# Optional: Default zip code for location searches
KROGER_USER_ZIP_CODE=90274

Running the Server

# With uv (recommended)
uv run kroger-mcp

# With uvx (directly from PyPI without installation)
uvx kroger-mcp

# Or with Python directly
python server.py

Available Tools

Location Tools

• search_locations: Find Kroger stores near a zip code
• get_location_details: Get detailed information about a specific store
• set_preferred_location: Set a preferred store for future operations
• get_preferred_location: Get the currently set preferred store
• check_location_exists: Verify if a location ID is valid

Product Tools

• search_products: Search for products by name, brand, or other criteria
• get_product_details: Get detailed product information including pricing
• search_products_by_id: Find products by their specific product ID
• get_product_images: Get product images from specific perspective (front, back, etc.)

Cart Tools

• add_items_to_cart: Add a single item to cart (requires authentication)
• bulk_add_to_cart: Add multiple items to cart in one operation (requires authentication)
• view_current_cart: View items currently in your local cart tracking
• remove_from_cart: Remove items from local cart tracking
• clear_current_cart: Clear all items from local cart tracking
• mark_order_placed: Move current cart to order history
• view_order_history: View history of placed orders

Information Tools

• list_chains: Get all Kroger-owned chains
• get_chain_details: Get details about a specific chain
• check_chain_exists: Check if a chain exists
• list_departments: Get all store departments
• get_department_details: Get details about a specific department
• check_department_exists: Check if a department exists

Profile Tools

• get_user_profile: Get authenticated user's profile information (requires authentication)
• test_authentication: Test if authentication token is valid (requires authentication)
• get_authentication_info: Get detailed authentication status (requires authentication)
• force_reauthenticate: Clear tokens and force re-authentication

Utility Tools

• get_current_datetime: Get current system date and time

Local Cart Tracking

Since the Kroger API doesn't provide cart viewing functionality, this server maintains local tracking:

• Current Cart: Stored in kroger_cart.json
• Order History: Stored in kroger_order_history.json (use mark_order_placed to move items from cart to history)

API Limitations

• View Only: The remove_from_cart and clear_current_cart tools ONLY affect local tracking, not the actual Kroger cart
• Local Sync: Use these tools only when the user has already removed items from their cart in the Kroger app/website
• One-Way: Items can be added to the Kroger cart but not removed through the Public API

Basic Workflow

1. Set up a preferred location:

   User: "Find Kroger stores near 90274"
   Assistant: [Uses search_locations tool]
   User: "Set the first one as my preferred location"
   Assistant: [Uses set_preferred_location tool]
   

2. Search and add products:

   User: "Add milk to my cart"
   Assistant: [Uses search_products, then add_items_to_cart]
   
   User: "Add bread, eggs, and cheese to my cart"
   Assistant: [Uses search_products for each, then bulk_add_to_cart]
   

3. Manage cart and orders:

   User: "What's in my cart?"
   Assistant: [Uses view_current_cart tool to see local memory]
   
   User: "I placed the order on the Kroger website"
   Assistant: [Uses mark_order_placed tool, moving current cart to the order history]
   

Authentication Process

When Claude attempts to modify your Kroger account, you will be asked to insert a link into your browser that will handle authentication. Ensure you have already created a Kroger account (different from your Kroger developer account) before attempting to authenticate.

How to install this MCP server

For Claude Code

To add this MCP server to Claude Code, run this command in your terminal:

claude mcp add-json "kroger" '{"command":"uvx","args":["kroger-mcp"],"env":{"KROGER_CLIENT_ID":"your_client_id","KROGER_CLIENT_SECRET":"your_client_secret","KROGER_REDIRECT_URI":"http://localhost:8000/callback","KROGER_USER_ZIP_CODE":"10001"}}'

See the official Claude Code MCP documentation for more details.

For Cursor

There are two ways to add an MCP server to Cursor. The most common way is to add the server globally in the ~/.cursor/mcp.json file so that it is available in all of your projects.

If you only need the server in a single project, you can add it to the project instead by creating or adding it to the .cursor/mcp.json file.

Adding an MCP server to Cursor globally

To add a global MCP server go to Cursor Settings > Tools & Integrations and click "New MCP Server".

When you click that button the ~/.cursor/mcp.json file will be opened and you can add your server like this:

{
    "mcpServers": {
        "kroger": {
            "command": "uvx",
            "args": [
                "kroger-mcp"
            ],
            "env": {
                "KROGER_CLIENT_ID": "your_client_id",
                "KROGER_CLIENT_SECRET": "your_client_secret",
                "KROGER_REDIRECT_URI": "http://localhost:8000/callback",
                "KROGER_USER_ZIP_CODE": "10001"
            }
        }
    }
}

Adding an MCP server to a project

To add an MCP server to a project you can create a new .cursor/mcp.json file or add it to the existing one. This will look exactly the same as the global MCP server example above.

How to use the MCP server

Once the server is installed, you might need to head back to Settings > MCP and click the refresh button.

The Cursor agent will then be able to see the available tools the added MCP server has available and will call them when it needs to.

You can also explicitly ask the agent to use the tool by mentioning the tool name and describing what the function does.

For Claude Desktop

To add this MCP server to Claude Desktop:

1. Find your configuration file:

• macOS: ~/Library/Application Support/Claude/claude_desktop_config.json
• Windows: %APPDATA%\Claude\claude_desktop_config.json
• Linux: ~/.config/Claude/claude_desktop_config.json

2. Add this to your configuration file:

{
    "mcpServers": {
        "kroger": {
            "command": "uvx",
            "args": [
                "kroger-mcp"
            ],
            "env": {
                "KROGER_CLIENT_ID": "your_client_id",
                "KROGER_CLIENT_SECRET": "your_client_secret",
                "KROGER_REDIRECT_URI": "http://localhost:8000/callback",
                "KROGER_USER_ZIP_CODE": "10001"
            }
        }
    }
}

3. Restart Claude Desktop for the changes to take effect