• DATA
  • MATH
  • ANALYSIS
  • HUMAN

How to calculate meal macros with your AI

Connect FatSecret to your AI client to turn meal descriptions into nutritional data. Your agent handles the database lookups and the math.

Ask AI about this page

Short answer

How can I use AI to track my macros?

Tell your AI what you ate and the portion size. It pulls the nutritional profile from FatSecret and calculates the protein, carbs, and fats for you. You'll get a complete macro breakdown.

The outcomes

What you get from your agent

The AI does the heavy lifting by pulling data and scaling it to your specific meal.

DATA

Nutritional profiles

The AI fetches specific calorie, fat, protein, and carb counts from the FatSecret database. You get the raw numbers for any food item.

MATH

Portion scaling

The agent adjusts the nutritional data based on the weight or volume you provide. It calculates the exact macros for your specific serving size.

ANALYSIS

Meal composition

Your AI can sum up multiple ingredients to show the total macro split for a single dish. This gives you a clear view of your meal's impact.

HUMAN

Manual verification

You review the data the AI pulls to ensure it matches what you actually ate. The AI provides the numbers, but you confirm the accuracy.

The workflow

What your AI does when you describe a meal.

The AI acts as a bridge between your chat and the FatSecret database.

  1. Identify food

    Your agent parses your text to find the specific food item you're describing.

    get_fatsecret_food_details

  2. Fetch data

    The AI pulls the nutritional profile for that item from the database.

    get_fatsecret_food_details

  3. Scale portions

    The agent applies the nutritional data to the specific weight or serving size you mentioned.

    get_fatsecret_food_details

  4. Calculate totals

    The AI sums the nutrients to provide a final macro count for the meal.

    get_fatsecret_food_details

Try it

Copy these to start.

Use these prompts to begin your nutritional analysis.

Starting points

Replace the food names and amounts with your actual meal details.

FatSecret Connector

You're all set. Choose your MCP client and follow the setup instructions.

Connector linkhttps://edge.vinkius.com/vk_preview_ltoVus2qK1BQ5r7C33cCY2nztaYw2SE4eC1Hkl37/mcp

Claude Desktop

Follow the steps below to connect in seconds.

  1. 1In Claude Desktop, open Settings → Connectors.
  2. 2Click “Add custom connector” and paste the connector link above as the remote MCP server URL.
  3. 3Click Add and start a new chat — FatSecret capabilities are ready to use.
Configuration · claude_desktop_config.jsonCopy
{
  "mcpServers": {
    "fatsecret-mcp": {
      "url": "https://edge.vinkius.com/vk_preview_ltoVus2qK1BQ5r7C33cCY2nztaYw2SE4eC1Hkl37/mcp"
    }
  }
}
Copy into chat04

  • Calculate the macros for 250g of cooked chicken breast.

  • What are the nutritional details for a large Fuji apple?

  • I just ate 150g of Greek yogurt and 30g of granola. Give me the macro breakdown.

  • Find the protein and carb content for 1 cup of cooked quinoa.

  • Claude
  • ChatGPT
  • Cursor
  • VS Code
  • Windsurf
  • Claude Code
  • JetBrains
  • Cline

Start here

Connect FatSecret once, then ask.

Connect the FatSecret MCP to your AI client in one click. Your credentials stay encrypted on our side, and you can start asking about food immediately.

Connect FatSecret to your AI

FAQ

How this task behaves

  • 01

    Can the AI log my meals directly into the FatSecret app?

    No. The AI only pulls data from the database to show you in your chat. You have to log the meal in your app yourself.

  • 02

    Does the AI know the exact brand of food I ate?

    Only if that brand is in the FatSecret database. If you don't name a brand, the AI pulls data for the generic version.

  • 03

    Can the AI change my daily calorie goals?

    No. The AI only calculates the macros for the food you describe. It cannot modify your user profile or settings.

  • 04

    How accurate are the macro calculations?

    The accuracy depends on the data in FatSecret. The AI performs the math based on the specific serving sizes you provide.

  • 05

    Can I ask for the macros of a recipe?

    Yes. If you list the ingredients and their amounts, the AI will fetch the data for each item and sum them up.

  • More questions about FatSecret? See everything the FatSecret Connector can do

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