FitAPI — The Most Detailed Food & Exercise Database API

Ask your AI agent about any food, nutrient, exercise, or barcode — and get precise, science-grade data instead of LLM guesses.

"How much omega-3 is in salmon?" — FitAPI returns the exact value from curated scientific databases, not an approximation from training data.

What you get

• 16,000+ foods with 120+ nutrients each — every vitamin, mineral, amino acid, fatty acid — curated from 5 international databases (USDA, NUTTAB, CNF2015, MEXT, FRIDA)
• 3 million+ branded products — scan or search any barcode (UPC/EAN) for nutrition facts
• 80,000+ local recipes from 48 languages — with ingredients matched to the nutrition database for accurate macros
• 5,000+ exercises — step-by-step instructions, tips, main/granular/synergist muscles, equipment, and muscle activation percentages
• Smart filtering — "foods highest in iron", "high protein low fat seafood", "most omega-3" — sorted by actual nutrient values, not keyword matching
• Personalized daily needs — calculate exact macro/micronutrient targets based on body stats and goals
• 48 languages — food names, exercise instructions, and recipe data translated natively

Why not just ask the LLM?

LLMs estimate. FitAPI knows. When you ask "how much protein in chicken breast", an LLM guesses ~31g from training data. FitAPI returns 22.5g per 100g from the USDA database — the actual measured value. For serious nutrition tracking, the difference matters.