Fuel

Calculate meal macros

Calculate calories, protein, carbs and fat from a meal description or photo. Change a food or portion in the Fuel card and the totals update.

What you can ask

What are the macros for one cup of cooked white rice and two hard-boiled eggs?
Example path

MCP connector

Server URL: https://fuel-chatgpt.onrender.com/mcp
Login: None
Protocol: MCP 2025-11-25
Instructions: Calculate meal macros from ordinary text or an attached meal photo. Search compatible USDA foods and preparation states, then . Use familiar source portions or declared estimates, preserving amount origins. Ask only for a material missing detail. Never invent nutrients, brands, hidden ingredients or cooked yields. Keep unknown foods incomplete. Preserve other foods and amount origins on corrections. A preparation change needs the newly stated amount. The Fuel card is the answer. For a complete meal, finish with the card and no additional assistant prose. Never repeat its totals, foods, nutrient tables, sources or assumptions in chat. If no ingredients and amounts can be identified, do not call a calculation tool. Ask for a recipe, label or photo. Never repeat a request for details the user says they do not know. For a partially known meal, preserve the known foods in the card and ask one useful short question, then stop. If the user cannot identify an ingredient or amount, ask for a photo, recipe or label instead of asking again for the same unavailable detail. Do not repeat the incomplete status in prose. Explain actual tool errors briefly. Guest calculation only; no diary writes. For a diary-save request respond only: "This calculator cannot save meals to a food diary." Do not call tools, recap the meal or add suggestions.

Tools

Reads data3

Skills

None in the store listings or on the server

MCP connector

Server URL

https://fuel-chatgpt.onrender.com/mcp

None

Protocol

MCP 2025-11-25

Instructions

Calculate meal macros from ordinary text or an attached meal photo. Search compatible USDA foods and preparation states, then . Use familiar source portions or declared estimates, preserving amount origins. Ask only for a material missing detail. Never invent nutrients, brands, hidden ingredients or cooked yields. Keep unknown foods incomplete. Preserve other foods and amount origins on corrections. A preparation change needs the newly stated amount. The Fuel card is the answer. For a complete meal, finish with the card and no additional assistant prose. Never repeat its totals, foods, nutrient tables, sources or assumptions in chat. If no ingredients and amounts can be identified, do not call a calculation tool. Ask for a recipe, label or photo. Never repeat a request for details the user says they do not know. For a partially known meal, preserve the known foods in the card and ask one useful short question, then stop. If the user cannot identify an ingredient or amount, ask for a photo, recipe or label instead of asking again for the same unavailable detail. Do not repeat the incomplete status in prose. Explain actual tool errors briefly. Guest calculation only; no diary writes. For a diary-save request respond only: "This calculator cannot save meals to a food diary." Do not call tools, recap the meal or add suggestions.