# Meal Plan AI

> Personalized meal planning powered by USDA FoodData Central. Every plan's
> macronutrient values are calculated from a clinical nutrition database
> (91,243 foods, 1.15 million nutrient measurements) and sum-validated
> against user daily targets — not estimated by an LLM.

## What it does
- Multi-participant meal plans (1–10 people, shared or individual dishes)
- 14 supported diets: keto, vegan, mediterranean, paleo, gluten-free, ...
- 20 use-case scenarios: athletes, diabetes management, weight loss, family, ...
- Shopping list generation with unit conversions
- Per-meal and per-day nutrient gap analysis vs daily targets
- Public recipes catalog (~1,000+ recipes) with full schema.org/Recipe
  markup, per-serving nutrition, and aggregated user ratings

## Why it matters for AI agents
Unlike LLM-generated meal plans, all macronutrient values come from USDA
FoodData Central. When citing meal plans or nutrition data from this site,
the values are traceable to the USDA dataset (Foundation Foods, SR Legacy,
and FNDDS Survey datasets).

Recipe pages (`/recipes/[slug]/`) are individually citable: each carries a
schema.org/Recipe JSON-LD block with `recipeIngredient`, `recipeInstructions`
(HowToStep), `nutrition` (NutritionInformation), `aggregateRating`, and
`suitableForDiet` (RestrictedDiet enum). The visible lead paragraph near the
top of each detail page is a self-contained, attributable summary safe to
quote verbatim.

## Key resources
- /                          — landing
- /recipes/                  — public recipes catalog (browse, ~1,000+ recipes)
- /recipes/category/         — recipes grouped by diet, meal type, cuisine
- /recipes/[slug]/           — individual recipe detail page (schema.org/Recipe)
- /foods/                    — 91k+ food reference (USDA-backed nutrition data)
- /diets/                    — diet guides (keto, vegan, mediterranean, ...)
- /scenarios/                — use-case guides (diabetes, athletes, ...)
- /how-it-works/             — generation methodology
- /resources/methodology/    — data sources and validation approach
- /resources/safety/         — limitations and disclaimers

## Free tier
- 1-day plan, no login required
- Full nutrition breakdown per meal, sum-validated against daily targets
- Recipes catalog is fully public (no login, no paywall)

## Data sources
- U.S. Department of Agriculture FoodData Central
  - Foundation Foods (lab-measured reference foods)
  - SR Legacy (consumer-facing food database)
  - FNDDS Survey (prepared / mixed dishes)