How to Calculate Meal Calories with OpenClaw
Meal calorie calculation with OpenClaw and ToolRouter. Total nutrition for any combination of foods.
Tool
OpenClaw processes meal calculations systematically, looking up each ingredient and returning aggregated totals in a structured format. It excels at batch processing multiple meals at once, making it the right choice when you need to calculate nutrition for an entire week of meal prep or a full restaurant menu.
Connect ToolRouter to OpenClaw
1Install the CLI
npm install -g toolrouter-mcp2Call tools directly from OpenClaw
toolrouter-mcp call web-search search --query "AI tools"
toolrouter-mcp toolsSteps
Once connected (see setup above), use the Nutrition Data tool:
- Ask OpenClaw: "Calculate total calories for a meal of pasta (200g), marinara sauce (100g), and parmesan (30g)"
- OpenClaw looks up each ingredient and totals the nutrition
- Ask: "What is the macro split for this meal?"
- Use the results for your nutrition tracking
Example Prompt
Try this with OpenClaw using the Nutrition Data tool
Add up the calories and macros for dinner: 200g spaghetti, 150g tomato sauce, 100g ground beef, and 20g parmesan cheese.
Tips
- Include cooking oils and sauces -- they often add significant calories
- Ask for per-serving calculations if the meal is for multiple people
- Track meals over several days to see patterns in your nutrition