NutritionAPIs

MCP server for nutrition data. Search foods, calculate meals, track daily intake — powered by USDA FoodData Central and Open Food Facts.

Install

npx nutritionapis

Or install globally:

npm install -g nutritionapis

Configure in Claude Desktop

Add to your claude_desktop_config.json:

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

With your own USDA API key (optional, higher rate limits):

{
  "mcpServers": {
    "nutritionapis": {
      "command": "npx",
      "args": ["-y", "nutritionapis"],
      "env": {
        "USDA_API_KEY": "your-key-here"
      }
    }
  }
}

Get a free key at https://fdc.nal.usda.gov/api-key-signup.

Tools

| Tool | Description | |------|-------------| | search_food | Search USDA + Open Food Facts for foods. Returns nutrition per 100g. | | get_food | Get full nutrition profile for a food by ID with portion scaling. | | calculate_meal | Calculate total nutrition for multiple foods with portions. | | log_meal | Log foods to daily intake tracker. | | daily_summary | Get daily nutrition totals and meal log. | | save_favorite | Save a food with default portion for quick access. | | list_favorites | List saved favorites with nutrition. | | remove_favorite | Remove a saved favorite. | | compare_foods | Side-by-side nutrition comparison table. | | delete_meal_entry | Remove a logged meal entry. |

Data Sources

• USDA FoodData Central — 400,000+ foods, government-quality data. Foundation and SR Legacy databases.
• Open Food Facts — 3M+ packaged products with barcodes. Community-maintained, global.

All data is cached locally in SQLite (~/.nutritionapis/nutrition.db) for fast repeat lookups.

Examples

"What's in a chicken breast?" → Agent calls search_food with query "chicken breast"

"I had 3 eggs and 2 slices of toast for breakfast" → Agent calls search_food for each, then log_meal with portions

"How does salmon compare to chicken for protein?" → Agent calls search_food for both, then compare_foods

"What have I eaten today?" → Agent calls daily_summary

License

MIT