# Introduction

### **Welcome to the Nutrition AI Platform!**

**Nutrition AI** by [Passio](https://www.passio.ai/nutrition-ai) gives developers a single integration point for AI-powered food tracking and nutrition intelligence. Send a photo, a voice note, a barcode scan, or a text query — and get back structured nutritional data from a 2.5M+ food database, ready to use in your app.

The platform combines cloud-based AI models (LLM-powered food recognition and natural language understanding) with a comprehensive nutrition database covering branded products, generic foods, and recipes. You send input, Passio identifies the food, matches it to the database, and returns structured nutrition data — calories, macros, micros, portions, and serving sizes.

### **Who is this for?**

* Developers building **health, fitness, nutrition, or wellness apps** who need food logging, meal tracking, or dietary analysis.
* Teams adding **food recognition or nutrition features** to an existing mobile or web application.
* Companies building **AI-powered nutrition coaching**, personalized meal planning, or food shopping experiences.

### **What can you do with it?**

* **Image Recognition** — take a photo of any meal and get identified ingredients with nutritional data.
* **Food Database** — search and retrieve detailed nutritional information from a 2.5M+ food database.
* **Voice Logging** — speak or type what you ate and get structured food entries with portions.
* **Barcode Scanning** — scan packaged foods to get full product nutrition.
* **Nutrition Facts Scanning** — photograph a nutrition label to extract structured data.
* **Text Search** — semantic and keyword search across the entire food database.
* **Meal Plans** — generate AI-powered personalized meal plans.
* **Nutrition Advisor** — conversational AI for nutrition questions, recipes, and suggestions.

### **How to integrate**

With a single **Nutrition AI key**, you gain access to:

* **REST API** for web and backend development
* **Mobile SDKs** for iOS, Android, React Native, and Flutter
* **Easy AI** for custom no-code AI endpoints and workflows

Not sure which to use? See [REST API vs Mobile SDKs](https://passio.gitbook.io/nutrition-ai/getting-started/api-vs-sdk).

Before diving into specific SDKs or REST API details, we recommend first reviewing the [Getting Started section to obtain your Nutrition AI key](https://passio.gitbook.io/nutrition-ai/getting-started/get-your-nutrition-ai-key). It provides essential setup instructions, authentication details, and guidance on managing your credits.

### Jump right in

<table data-card-size="large" data-view="cards"><thead><tr><th></th><th data-hidden data-card-target data-type="content-ref"></th><th data-hidden data-card-cover data-type="image">Cover image</th></tr></thead><tbody><tr><td>Mobile SDKs Installation And Setup Guide</td><td><a href="mobile-sdks/mobile-sdk-overview">mobile-sdk-overview</a></td><td><a href="https://872966647-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FES2kGechp4srgCTrBTxs%2Fuploads%2FL2HpsHVgJHpKfmTQV8Lm%2Fmobile%20sdks.png?alt=media&#x26;token=1b64fa7e-06b1-4e92-b59b-58e3e45653a3">mobile sdks.png</a></td></tr><tr><td>REST API Installation And Setup Guide</td><td><a href="rest-api/api-overview">api-overview</a></td><td><a href="https://872966647-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FES2kGechp4srgCTrBTxs%2Fuploads%2FaoWQyXxTafzliUgk4o9F%2Fweb%20and%20apis.png?alt=media&#x26;token=d861c1b8-470e-4bc3-a713-9f0707b53534">web and apis.png</a></td></tr></tbody></table>

{% hint style="info" %}
**For AI agents and AI-assisted development:** If you are an AI agent reading this documentation, or if you want to use these docs inside an AI assistant, chatbot, or RAG system, use the [AI / LLM Friendly Docs](https://passio.gitbook.io/nutrition-ai/fundamentals/ai-docs-summary). It contains a complete, condensed overview of all endpoints, authentication, key concepts, and common patterns in a single file.
{% endhint %}