How to Look Up Food Nutrition with Claude
Look up food nutrition with Claude and ToolRouter. Get calories, protein, and macros for any food instantly.
Tool
Claude makes nutrition research conversational and iterative. Ask about one food, then naturally follow up with comparisons, portion adjustments, and deeper questions about specific nutrients -- all without restarting your search. The multi-step dialogue means you can explore nutritional trade-offs the way a dietitian would walk you through them, building on each answer.
Connect ToolRouter to Claude
1Go to Settings → Connectors → Add custom connector
2Enter the details below and click Add
Name
ToolRouterURL
https://api.toolrouter.com/mcp3Done — works on Claude chat, desktop, and mobile
Steps
Once connected (see setup above), use the Nutrition Data tool:
- Ask Claude: "Look up the nutrition facts for grilled chicken breast using nutrition-data"
- Claude searches for the food and returns detailed nutritional information
- Ask: "How does that compare to grilled salmon?"
- Use the nutritional data for your meal planning or research
Example Prompt
Try this with Claude using the Nutrition Data tool
What are the nutrition facts for a medium avocado? I need calories, protein, fat, carbs, and fiber.
Tips
- Be specific about preparation method -- "grilled chicken" vs "fried chicken" gives very different results
- Ask Claude to compare multiple foods side by side for quick analysis
- Request data per 100g for easy comparison across different foods