---
title: "Obtaining API Keys and Authenticating API"
slug: "obtaining-api-keys-and-authenticating-api"
updated: 2024-02-13T05:43:48Z
canonical: "docx.syndigo.com/obtaining-api-keys-and-authenticating-api"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://docx.syndigo.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Obtaining API Keys and Authenticating API

Any client that requires API authentication must obtain a APP ID, APP KEY, and enable API authentication in the configuration. This is a one time procedure and the responsibility of the implementation team to provide required details to the client or partners.

#### Signup for Nutritionix API

Before you begin using the Nutritionix API, you must signup for an API key.

**If you are signing up for the first time, then**:

1. Open the [URL](https://developer.nutritionix.com) in the browser.  

**Result**: The Nutritionix **Home** page is displayed.

![home-page-nutrionix](https://cdn.document360.io/381abf0c-f631-4d76-a7c0-e955ad2c7aa6/Images/Documentation/home-page-nutrionix.png?sv=2026-02-06&spr=https&st=2026-11-04T20%3A16%3A55Z&se=2026-11-04T21%3A16%3A55Z&sr=c&sp=r&sig=3RVcpUwV%2Fh%2FHta1JNNlx49J67uOyWe3Gq9opBgxuOto%3D)

1. Click the **signup for your API key** link.

![sign-up-link](https://cdn.document360.io/381abf0c-f631-4d76-a7c0-e955ad2c7aa6/Images/Documentation/sign-up-link.jpg?sv=2026-02-06&spr=https&st=2026-11-04T20%3A16%3A55Z&se=2026-11-04T21%3A16%3A55Z&sr=c&sp=r&sig=3RVcpUwV%2Fh%2FHta1JNNlx49J67uOyWe3Gq9opBgxuOto%3D)

**Result**: The **Signup** page is displayed.

1. Enter **User Information** and **Contact Details**.

![sign-up-nutrionix](https://cdn.document360.io/381abf0c-f631-4d76-a7c0-e955ad2c7aa6/Images/Documentation/sign-up-nutrionix.png?sv=2026-02-06&spr=https&st=2026-11-04T20%3A16%3A55Z&se=2026-11-04T21%3A16%3A55Z&sr=c&sp=r&sig=3RVcpUwV%2Fh%2FHta1JNNlx49J67uOyWe3Gq9opBgxuOto%3D)

              **Note**:

              

Before signing up, click the **show** link to read the legal terms and conditions.

1. Click **Sign up**.
2. Select **I'm not a robot** (reCAPTCHA) for signing up.

**If you have already signed up and logged in, then**:

1. Open the [URL](https://developer.nutritionix.com) in the browser. **Result**: The Nutritionix **Home** page is displayed.
2. Click the **View your API key now** link.

![API-link](https://cdn.document360.io/381abf0c-f631-4d76-a7c0-e955ad2c7aa6/Images/Documentation/API-link.png?sv=2026-02-06&spr=https&st=2026-11-04T20%3A16%3A55Z&se=2026-11-04T21%3A16%3A55Z&sr=c&sp=r&sig=3RVcpUwV%2Fh%2FHta1JNNlx49J67uOyWe3Gq9opBgxuOto%3D)

**Result**: The **Welcome** page is displayed.

1. Enter **Username** or **Email**.
2. Enter the **Password**.

![signed-up-nutrionix](https://cdn.document360.io/381abf0c-f631-4d76-a7c0-e955ad2c7aa6/Images/Documentation/signed-up-nutrionix.png?sv=2026-02-06&spr=https&st=2026-11-04T20%3A16%3A55Z&se=2026-11-04T21%3A16%3A55Z&sr=c&sp=r&sig=3RVcpUwV%2Fh%2FHta1JNNlx49J67uOyWe3Gq9opBgxuOto%3D)

1. Click **Sign in**.