FatSecret MCP Server

[!IMPORTANT] This is not an official MCP server by FatSecret. It uses the FatSecret Platform API which requires a free developer account.

An MCP (Model Context Protocol) server that connects Claude/Cursor to the FatSecret Platform API. Search foods, track your diet, manage recipes, and monitor weight directly from your AI assistant.

Available on NPM: npx fatsecret-mcp | Claude Desktop Extension: fatsecret-mcp.mcpb

✨ Features

• 🔐 Authentication — Interactive credential setup and OAuth authorization
• 🔍 Food Search — Search FatSecret's extensive food database with detailed nutrition data
• 📷 Barcode Lookup — Find foods by GTIN-13 barcode
• 🍳 Recipe Search — Browse and filter recipes by calories, macros, and prep time
• 📝 Food Diary — Add, edit, copy, and delete food diary entries
• 🍽️ Saved Meals — Create and manage reusable meal templates
• ⚖️ Weight Tracking — Record and view weight history
• 🏃‍♂️ Exercise Tracking — View exercises and manage activity entries
• ⭐ Favorites — Manage favorite foods and recipes

🚀 Quick Start

Add to your MCP client configuration:

{
  "mcpServers": {
    "fatsecret": {
      "command": "npx",
      "args": ["-y", "fatsecret-mcp"]
    }
  }
}

That's it! On first use, the AI will guide you through setup:

1. check_auth_status — detects missing credentials and tells you what to do
2. setup_credentials — you provide your API keys (saved to ~/.fatsecret-mcp/config.json)
3. start_auth → complete_auth — authorize your FatSecret account for diary/weight tools

Alternatively, you can pass credentials as environment variables:

{
  "mcpServers": {
    "fatsecret": {
      "command": "npx",
      "args": ["-y", "fatsecret-mcp"],
      "env": {
        "FATSECRET_CLIENT_ID": "your_client_id",
        "FATSECRET_CLIENT_SECRET": "your_client_secret",
        "FATSECRET_CONSUMER_SECRET": "your_consumer_secret"
      }
    }
  }
}

🔑 Where to Get Credentials

1. Create a free account at platform.fatsecret.com
2. Navigate to My Account → API Keys
3. You'll see three values:
   • Client ID (used for both OAuth 2.0 and OAuth 1.0)
   • Client Secret (OAuth 2.0 - for public food/recipe search)
   • Consumer Secret (OAuth 1.0 - for user profile/diary access)

📖 Step-by-step guide: Getting Started with FatSecret API

Claude Desktop (Extension)

Download and open fatsecret-mcp.mcpb with Claude Desktop. You'll be prompted to enter your FatSecret credentials — secrets are stored securely in the OS keychain.

See Building Desktop Extensions with MCPB for more details.

Claude Desktop (Manual)

~/Library/Application Support/Claude/claude_desktop_config.json

Claude Code (CLI)

claude mcp add fatsecret -- npx -y fatsecret-mcp

Or with env vars:

claude mcp add fatsecret \
  -e FATSECRET_CLIENT_ID=your_client_id \
  -e FATSECRET_CLIENT_SECRET=your_client_secret \
  -e FATSECRET_CONSUMER_SECRET=your_consumer_secret \
  -- npx -y fatsecret-mcp

Verify with claude mcp list.

Cursor

• Settings UI — Settings → MCP → + Add new MCP server, then fill in the command, args, and env
• Project config — add JSON to .cursor/mcp.json in your project root
• Global config — add JSON to ~/.cursor/mcp.json

🛠️ Available Tools

Tool	Description
🔐 Setup & Auth
check_auth_status	Check if credentials and profile auth are configured. Call this first.
setup_credentials	Save FatSecret API credentials to persistent config
start_auth	Start OAuth 1.0 authorization — returns URL for user to visit
complete_auth	Complete OAuth with verifier PIN from authorization page
🔍 Food Search (public)
search_foods	Search the food database
get_food	Get detailed nutrition info for a food
find_food_by_barcode	Find food by GTIN-13 barcode
autocomplete_foods	Get search autocomplete suggestions
🍳 Recipes (public)
search_recipes	Search recipes with filters
get_recipe	Get recipe details with ingredients and directions
📚 Reference (public)
get_food_categories	Get food categories
get_food_sub_categories	Get food sub categories
get_brands	Get food brands
get_recipe_types	Get recipe types
📝 Food Diary (profile auth)
get_food_entries	Get food diary entries for a date
get_food_entries_month	Get monthly nutrition summary (calories & macros per day)
create_food_entry	Add a food diary entry
edit_food_entry	Edit a food diary entry
delete_food_entry	Delete a food diary entry
copy_food_entries	Copy entries from one date to another
copy_saved_meal_entries	Copy a saved meal to a date
⭐ Favorites (profile auth)
get_favorite_foods	Get favorite foods
delete_favorite_food	Remove food from favorites
get_most_eaten_foods	Get most eaten foods
get_recently_eaten_foods	Get recently eaten foods
get_favorite_recipes	Get favorite recipes
add_favorite_recipe	Add recipe to favorites
delete_favorite_recipe	Remove recipe from favorites
🍽️ Saved Meals (profile auth)
get_saved_meals	Get saved meals
create_saved_meal	Create a saved meal
edit_saved_meal	Edit a saved meal
delete_saved_meal	Delete a saved meal
get_saved_meal_items	Get items in a saved meal
add_saved_meal_item	Add food to a saved meal
edit_saved_meal_item	Edit saved meal item
delete_saved_meal_item	Remove item from saved meal
⚖️ Weight (profile auth)
update_weight	Record weight for a date
get_weight_month	Get weight history for a month
🏃‍♂️ Exercise (profile auth)
get_exercises	Get exercise types
edit_exercise_entries	Shift exercise time between activities
get_exercise_entries_month	Get exercise data for a month
save_exercise_template	Save exercise template for weekdays
👤 Profile (profile auth)
get_profile	Get user profile info
create_food	Create a custom food (Premier)

API reference: FatSecret Postman Collection

🧪 Test Connection

npx fatsecret-mcp

Or with env vars:

FATSECRET_CLIENT_ID='...' FATSECRET_CLIENT_SECRET='...' FATSECRET_CONSUMER_SECRET='...' npx fatsecret-mcp

📋 Requirements

• Node.js 18+
• FatSecret Platform API account (platform.fatsecret.com)
• MCP-compatible client (Claude Desktop, Cursor, etc.)

🔧 Development

1. Clone the repository
2. npm install
3. Copy .env.example to .env and fill in your credentials
4. npm run dev to run in development mode

Debugging with MCP Inspector:

FATSECRET_CLIENT_ID=X FATSECRET_CLIENT_SECRET=X FATSECRET_CONSUMER_SECRET=X npx -y @modelcontextprotocol/inspector npx <local-path>/fatsecret-mcp

📄 License

MIT License - see LICENSE file for details.