Kroger API

Food & Drink / API Key Intermediate HTTPS
Varies by plan (check documentation)

Overview

The Kroger API gives developers access to product catalog data, pricing, store locations, and promotions from one of the largest US grocery chains. It requires OAuth 2.0 credentials obtained by registering on the Kroger Developer Portal. Beginners can use it to build grocery list apps, price comparison tools, or store finders.

💡

Beginner Tip

Register at developer.kroger.com to get your client credentials, then exchange them for an OAuth 2.0 access token — every API call requires that Bearer token in the Authorization header.

Available Data

stock price and symbol
open/close/high/low values
trading volume
market cap
historical price data
Use case: Integrate supermarket data data into web and mobile applications

Example Response

JSON Response
{
  "status": "success",
  "data": {
    "result": "Data from Kroger",
    "description": "Supermarket Data",
    "timestamp": "2025-01-15T10:00:00Z"
  }
}

Field Reference

productId Unique identifier for the product in the Kroger catalog.
description Human-readable product name and brief description.
brand Brand name of the product.
categories List of category strings the product belongs to (e.g., ["Dairy", "Milk"]).
items Array of sellable units each containing size, price, and inventory details.
images Product image objects with perspective (front/back) and URL sizes.

Implementation Example

// ⚠️ Note: This URL may be a documentation page. Check official docs for actual API endpoint.
const url = "https://developer.kroger.com/reference";
// Replace headers or query params with the values required by this API.
const response = await fetch(url, {
  headers: {
  "X-API-Key": "YOUR_API_KEY"
  }
});
if (!response.ok) throw new Error(`Request failed: ${response.status}`);
const data = await response.json();
console.log(data);

What Can You Build?

Note: These code examples are AI-generated and unverified. Always refer to the official API documentation for accurate usage.

Common Errors & Troubleshooting

401 Unauthorized The access token is missing, expired, or incorrect.
Re-fetch a fresh token with your client_id and client_secret via the /v1/connect/oauth2/token endpoint using the client_credentials grant type.
400 Bad Request on product search filter.locationId is required for product searches but is often omitted.
First call GET /v1/locations to find a valid locationId near you, then include filter.locationId in your product search query.
Empty products array The search term does not match any products at the chosen store location.
Try a more generic term (e.g., "bread" instead of a specific brand) or verify the locationId is for an active Kroger store.

Matrix Score Breakdown

🌐 Reachability 30/30
⚡ Speed 5/20
🔒 Security 15/15
🛠 Developer XP 12/20
✓ Reliability 10/15

Partially tested on Apr 5, 2026

Technical Specifications

Auth API Key
HTTPS REQUIRED
CORS UNKNOWN
Category Food & Drink
Difficulty Intermediate
Verified: 2026-04-04

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