Automated Amazon Bestseller Tracking with SellerMagnetAPI

Harnessing SellerMagnetAPI for Automated Amazon Bestseller Tracking

By Emma Johnson | September 27, 2025

Python Web Scraping Amazon Ecommerce

For Amazon businesses and market analysts, staying ahead of the competition requires constant monitoring of bestseller ranks and product performance. Manually tracking this data is time-consuming and inefficient. SellerMagnetAPI provides an enterprise-grade solution for automating Amazon bestseller tracking, empowering you with the insights needed for competitive analysis, inventory management, and market research.

Why Automate Amazon Bestseller Tracking?

Automated tracking offers several advantages:

  • Real-time Insights: Access up-to-date data on product rankings and market trends.
  • Competitive Analysis: Monitor competitor performance and identify emerging opportunities.
  • Inventory Management: Optimize inventory levels based on sales rank fluctuations.
  • Data-Driven Decisions: Make informed decisions based on accurate and reliable data.
  • Time Savings: Free up valuable time and resources by automating data collection.

Introducing SellerMagnetAPI

SellerMagnetAPI is a powerful Amazon data API designed for businesses. It allows you to access detailed product statistics, track bestseller ranks, and monitor competitor activity programmatically. This blog post will show you how to use the API to automate your Amazon bestseller tracking efforts.

Practical Use Cases and Examples

Here are some practical use cases and code examples demonstrating how to use SellerMagnetAPI for automated bestseller tracking:

1. Retrieving Amazon Product Statistics

The Amazon Product Statistics endpoint allows you to retrieve detailed statistics for an Amazon product, including sales rank and review counts. This information is crucial for understanding a product's performance and popularity.

Endpoint: /amazon-product-statistics

Method: GET

Parameters:

  • asin (required): Product ASIN (e.g., "B08N5WRWNW")
  • marketplaceId (required): Marketplace ID (e.g., "A1PA6795UKMFR9")
  • api_key (required): Your API key
  • graphs (optional): Generate visually graphs for history data

Example Request (cURL):


curl --location --request GET 'https://sellermagnet-api.com/amazon-product-statistics?asin=B08N5WRWNW&marketplaceId=A1PA6795UKMFR9&api_key=YOUR_API_KEY'

Example Response (JSON):


{
  "success": true,
  "data": {
    "asin": "B0CLTBHXWQ",
    "amazonPrice": 41800,
    "bestSellerRank": 15,
    "buyBoxPrice": 41800,
    "buyBoxFulfillment": "FBM",
    "buyBoxSellerIdHistory": [
      [
        "2025-06-14 17:08:00",
        "A2I59UVTUWUFH0"
      ]
    ],
    "salesRankHistory": [
      [
        "2025-06-14 01:58:00",
        15
      ]
    ],
    "trackingSince": "2023-12-30",
    "graphs": {
      "priceTrend": [
        {
          "timestamp": "2025-06-14T17:08:00",
          "price": 41800
        }
      ],
      "rankTrend": [
        {
          "timestamp": "2025-06-14T01:58:00",
          "rank": 15
        }
      ]
    },
     "metadata": {
          "category": "Videogiochi",
          "lastUpdated": "2025-06-14T17:08:00"
      }
  }
}

This response provides valuable data, including the product's ASIN, current price, best seller rank, buy box information, and historical sales rank data. The graphs parameter generates URLs for visualizing price and rank trends over time. The metadata field can provide categorization for organization and analysis.

2. Converting ASIN to EAN

The Amazon ASIN Converter endpoint allows you to convert between ASIN and EAN identifiers. This is helpful for cross-referencing product information across different databases or systems.

Endpoint: /amazon-asin-converter

Method: GET

Parameters:

  • asin (required): ASIN or EAN to convert (e.g., "B08N5WRWNW" or "9781234567890")
  • marketplaceId (required): Marketplace ID (e.g., "A1PA6795UKMFR9")
  • conversion_direction (required): Conversion direction: "asin-to-ean" or "ean-to-asin"
  • api_key (required): Your API key

Example Request (cURL):


curl --location --request GET 'https://sellermagnet-api.com/amazon-asin-converter?asin=B0CLTBHXWQ&marketplaceId=APJ6JRA9NG5V4&conversion_direction=asin-to-ean&api_key=YOUR_API_KEY'

Example Response (JSON):


{
  "success": true,
  "data": {
    "asin": "B0CLTBHXWQ",
    "eanList": [
      "0711719577294"
    ],
    "listedSince": "2023-12-30 01:00:00",
    "productTitle": "Playstation 5 Console Edizione Digital Slim"
  }
}

This response provides the EAN (European Article Number) associated with the given ASIN, along with the date the product was listed and its title.

3. Monitoring Seller Reviews

Understanding seller performance is crucial for assessing competition and potential partnerships. Use the Amazon Seller Review endpoint to fetch review details for a specific Amazon seller.

Endpoint: /amazon-seller-review

Method: GET

Parameters:

  • sellerId (required): Seller ID (e.g., "A1B2C3D4E5F6G7")
  • marketplaceId (required): Marketplace ID (e.g., "A1PA6795UKMFR9")
  • api_key (required): Your API key

Example Request (cURL):


curl --location --request GET 'https://sellermagnet-api.com/amazon-seller-review?sellerId=A1CWSGXIR635I6&marketplaceId=ATVPDKIKX0DER&api_key=YOUR_API_KEY'

Example Response (JSON):


{
  "success": true,
  "data": {
    "marketplace": {
      "ATVPDKIKX0DER": {
        "last5Reviews": [
          {
            "dateRated": "By gary kraus on June 5, 2025.",
            "reviewText": "great",
            "starRating": "5 out of 5 stars"
          },
          {
            "dateRated": "By Amazon Customer on June 5, 2025.",
            "reviewText": "Ok",
            "starRating": "5 out of 5 stars"
          },
          {
            "dateRated": "By Graciela Casta\u00f1eda on May 21, 2025.",
            "reviewText": "Excelente",
            "starRating": "5 out of 5 stars"
          }
        ],
        "sellerFeedback": {
          "30": {
            "rating": "3.3",
            "reviewsCount": "7"
          },
          "90": {
            "rating": "3.6",
            "reviewsCount": "30"
          },
          "365": {
            "rating": "3.9",
            "reviewsCount": "114"
          },
          "lifetime": {
            "rating": "4.5",
            "reviewsCount": "1,535"
          }
        }
      }
    },
    "sellerId": "A1CWSGXIR635I6"
  }
}

This response provides a snapshot of the seller's performance, including recent reviews and feedback ratings over different time periods. Monitor the sellerFeedback to gauge seller reliability and customer satisfaction.

4. Looking Up Product Information

The Amazon Product Lookup endpoint provides detailed product information for a given ASIN, allowing for comprehensive data gathering about a product's features, categories, and specifications.

Endpoint: /amazon-product-lookup

Method: GET

Parameters:

  • asin (required): Product ASIN (e.g., 'B08N5WRWNW')
  • marketplaceId (required): Marketplace ID (e.g., 'A1PA6795UKMFR9')
  • api_key (required): Your API key

Example Request (cURL):


curl --location --request GET 'https://sellermagnet-api.com/amazon-product-lookup?asin=B0CL61F39H&marketplaceId=ATVPDKIKX0DER&api_key=YOUR_API_KEY'

Example Response (JSON):


{
  "success": true,
  "data": {
    "productInfo": {
      "additionalDetails": {
        "ASIN": "B0CL61F39H",
        "Batteries": "1 Lithium Ion batteries required. (included)",
        "Best Sellers Rank": "Nr. 31 in Video Games Nr. 1 in PlayStation 5 Consoles",
        "Customer Rating": "4.7 out of 5 stars",
        "Date First Available": "December 10, 2023",
        "Item Weight": "10.6 pounds",
        "Item model number": "CFI-2015",
        "Manufacturer": "Sony",
        "Number of Reviews": "7,092 ratings",
        "Product Dimensions": "14 x 17 x 7 inches; 10.6 Pounds",
        "Release date": "December 10, 2023",
        "Type of item": "Video Game"
      },
      "asin": "B0CL61F39H",
      "bestsellerRanks": {
        "main_category": {
          "name": "Video Games",
          "rank": 31
        },
        "subcategory": {
          "name": "PlayStation",
          "rank": 1
        }
      },
      "bulletPoints": [
        "Model Number CFI-2000",
        "Includes DualSense Wireless Controller, 1TB SSD, Disc Drive, 2 Horizontal Stand Feet, HDMI Cable, AC power cord, USB cable, printed materials, ASTRO\u2019s PLAYROOM (Pre-installed game)",
        "Vertical Stand sold separately"
      ],
      "buyBoxInfo": {
        "currencyCode": "USD",
        "currencyName": "United States Dollar",
        "currencySymbol": "$",
        "price": 444.99,
        "sellerId": "A3853PJW50SJG8"
      },
      "categories": {
        "bestsellerCategory": [
          {
            "id": "20972781011",
            "index": 1,
            "name": "PlayStation 5",
            "url": "https://www.amazon.com/b/ref=dp_bc_2?ie=UTF8&node=20972781011"
          },
          {
            "id": "20972796011",
            "index": 2,
            "name": "Consoles",
            "url": "https://www.amazon.com/b/ref=dp_bc_3?ie=UTF8&node=20972796011"
          }
        ],
        "rootCategory": {
          "id": "468642",
          "name": "Video Games",
          "url": "https://www.amazon.com/computer-video-games-hardware-accessories/b/ref=dp_bc_1?ie=UTF8&node=468642"
        }
      },
      "description": [
        "Model Number CFI-2000",
        "Includes DualSense Wireless Controller, 1TB SSD, Disc Drive, 2 Horizontal Stand Feet, HDMI Cable, AC power cord, USB cable, printed materials, ASTRO\u2019s PLAYROOM (Pre-installed game)",
        "Vertical Stand sold separately",
        "The PS5 console unleashes new gaming possibilities that you never anticipated. Experience lightning fast loading with an ultra-high speed SSD, deeper immersion with support for haptic feedback, adaptive triggers, and 3D Audio*, and an all-new generation of incredible PlayStation games. Lightning Speed - Harness the power of a custom CPU, GPU, and SSD with Integrated I/O that rewrite the rules of what a PlayStation console can do. Stunning Games - Marvel at incredible graphics and experience new PS5 features. Play a back catalog of supported PS4 games. Breathtaking Immersion - Discover a deeper gaming experience with support for haptic feedback, adaptive triggers, and 3D Audio technology. Vertical stand sold separately. *3D audio via built-in TV speakers or analog/USB stereo headphones. Set up and latest system software update required."
      ],
      "details": {
        "ASIN": "B0CL61F39H",
        "Batteries": "1 Lithium Ion batteries required. (included)",
        "Date First Available": "December 10, 2023",
        "Item Weight": "10.6 pounds",
        "Item model number": "CFI-2015",
        "Manufacturer": "Sony",
        "Platform": "PlayStation 5",
        "Product Dimensions": "14 x 17 x 7 inches; 10.6 Pounds",
        "Release date": "December 10, 2023",
        "Type of item": "Video Game"
      },
      "hasAPlusContent": true,
      "images": [
        "https://m.media-amazon.com/images/I/41ECK5cY-2L._SL1000_.jpg",
        "https://m.media-amazon.com/images/I/41srF-iY93L._SL1000_.jpg",
        "https://m.media-amazon.com/images/I/41tVr19I3zL._SL1000_.jpg",
        "https://m.media-amazon.com/images/I/41HMaO9jO3L._SL1000_.jpg",
        "https://m.media-amazon.com/images/I/61e8hPmeoYL._SL1000_.jpg",
        "https://m.media-amazon.com/images/I/61Gj1Kc5R5L._SL1000_.jpg",
        "https://m.media-amazon.com/images/I/61r6PutKGwL._SL1000_.jpg",
        "https://m.media-amazon.com/images/I/717Id5h1fhL._SL1000_.jpg"
      ],
      "link": "https://www.amazon.com/dp/B0CL61F39H",
      "listedSinceDate": "2023-12-10",
      "mainImage": "https://m.media-amazon.com/images/I/31kTNmpm6vL.jpg",
      "marketplaceId": "ATVPDKIKX0DER",
      "reviews": {
        "averageRating": 4.7,
        "reviewSummary": "4.7 out of 5 stars",
        "totalReviews": 7092
      },
      "title": "PlayStation\u00ae5 console (slim)",
      "variations": [
        {
          "asin": "B0F6968Y5G",
          "attributes": {
            "Pattern Name": "PS5 w/ Black Ops Bundle",
            "Style": "PlayStation\u00ae5 Digital Edition (slim)"
          }
        },
        {
          "asin": "B0CL5KNB9M",
          "attributes": {
            "Pattern Name": "PS5 Only",
            "Style": "PlayStation\u00ae5 Digital Edition (slim)"
          }
        },
        {
          "asin": "B0CL61F39H",
          "attributes": {
            "Pattern Name": "PS5 Only",
            "Style": "PlayStation\u00ae5 console (slim)"
          }
        },
        {
          "asin": "B0F691TJTP",
          "attributes": {
            "Pattern Name": "PS5 w/ Black Ops Bundle",
            "Style": "PlayStation\u00ae5 console (slim)"
          }
        },
        {
          "asin": "B0FD54CGQ8",
          "attributes": {
            "Pattern Name": "PS5 w/ $100 PlayStation Store GC",
            "Style": "PlayStation\u00ae5 Digital Edition (slim)"
          }
        },
        {
          "asin": "B0FD4WGVH5",
          "attributes": {
            "Pattern Name": "PS5 w/ $100 PlayStation Store GC",
            "Style": "PlayStation\u00ae5 console (slim)"
          }
        }
      ],
      "videos": [
        "https://m.media-amazon.com/S/vse-vms-transcoding-artifact-us-east-1-prod/8af0ddf1-55f5-4e71-9463-39602c3edbae/default.jobtemplate.hls.m3u8",
        "https://m.media-amazon.com/S/vse-vms-transcoding-artifact-us-east-1-prod/50938d5c-2a9b-427a-b766-21b7cd63502e/default.jobtemplate.hls.m3u8"
      ]
    }
  }
}

This provides in-depth product specifications and details, including bestseller ranks, bullet points, buy box information, categories, descriptions, images, and more.

5. Monitoring Product Offers

Tracking product offers, including prices, sellers, and conditions, provides valuable insights into the competitive landscape. Use the Amazon Product Offers endpoint to gather this information.

Endpoint: /amazon-product-offers

Method: GET

Parameters:

  • asin (required): Product ASIN (e.g., 'B08N5WRWNW')
  • marketplaceId (required): Marketplace ID (e.g., 'A1PA6795UKMFR9')
  • geo_location (optional): Detailed Geo Location ZIP CODE
  • api_key (required): Your API key

Example Request (cURL):


curl --location --request GET 'https://sellermagnet-api.com/amazon-product-offers?asin=B0CL61F39H&marketplaceId=ATVPDKIKX0DER&api_key=YOUR_API_KEY'

Example Response (JSON):


{
  "success": true,
  "data": {
    "asin": "B0CL61F39H",
    "buyBox": {
      "condition": "New",
      "deliveryDate": "2025-06-28",
      "fulfillmentType": "FBA",
      "inventory": 30,
      "positivePercentage": 0,
      "priceWithoutShipping": 499,
      "sellerId": "Amazon",
      "sellerName": "Amazon",
      "shippingPrice": 0,
      "totalPrice": 499,
      "totalReviews": 0
    },
    "currency": {
      "code": "USD",
      "name": "United States Dollar",
      "symbol": "$"
    },
    "marketplaceId": "ATVPDKIKX0DER",
    "offers": [
      {
        "condition": "New",
        "deliveryDate": "2025-06-28",
        "fulfillmentType": "FBA",
        "inventory": 30,
        "positivePercentage": 0,
        "priceWithoutShipping": 499,
        "sellerId": "Amazon",
        "sellerName": "Amazon",
        "shippingPrice": 0,
        "totalPrice": 499,
        "totalReviews": 0
      },
      {
        "condition": "Used - Very Good",
        "deliveryDate": "2025-07-07",
        "fulfillmentType": "FBM",
        "inventory": 10,
        "positivePercentage": 78,
        "priceWithoutShipping": 409.99,
        "sellerId": "A17J18A7XABQI9",
        "sellerName": "PRICE 2 SAVE",
        "shippingPrice": 0,
        "totalPrice": 409.99,
        "totalReviews": 6892
      }
    ],
    "productLink": "https://www.amazon.com/dp/B0CL61F39H",
    "productMainImage": "https://m.media-amazon.com/images/I/31kTNmpm6vL.jpg",
    "productTitle": "PlayStation\u00ae5 console (slim)"
  }
}

This response provides a list of offers for the specified product, including seller details, prices, conditions, and delivery dates. By monitoring these offers, you can gain insights into pricing strategies and competition.

6. Fetching Amazon Bestsellers

Identify top-selling products within a specific category using the Amazon Bestsellers endpoint. This allows you to understand market trends and identify potential opportunities.

Endpoint: /amazon-bestsellers

Method: GET

Parameters:

  • category_id (required): Category ID (e.g., "electronics")
  • marketplaceId (required): Marketplace ID (e.g., "A1PA6795UKMFR9")
  • count (optional): Number of results (max 50, default 30)
  • api_key (required): Your API key

Example Request (cURL):


curl --location --request GET 'https://sellermagnet-api.com/amazon-bestsellers?category_id=electronics&marketplaceId=A1PA6795UKMFR9&api_key=YOUR_API_KEY'

Example Response (JSON):


{
  "category": "electronics",
  "bestsellers": [
    {
      "asin": "B08N5WRWNW",
      "rank": 1,
      "title": "Top Product"
    }
  ]
}

This response lists the top-selling products within the specified category, including their ASIN, rank, and title.

Advanced Automation Techniques

To fully automate Amazon bestseller tracking, consider these advanced techniques:

  • Scheduled Data Collection: Use a scheduler (like DataPipeline) to automatically retrieve data from SellerMagnetAPI at regular intervals.
  • Data Storage: Store the retrieved data in a database or data warehouse for historical analysis and trend identification.
  • Alerting: Set up alerts to notify you when a product's sales rank changes significantly or when a competitor launches a new product.
  • Visualization: Use data visualization tools to create dashboards and reports that provide a clear overview of your Amazon performance.

Benefits of Using SellerMagnetAPI

  • Comprehensive Data: Access detailed product statistics, bestseller ranks, and competitor activity.
  • Reliable and Accurate: Ensure data accuracy with SellerMagnetAPI's robust data collection and validation processes.
  • Scalable Solution: Easily scale your tracking efforts as your business grows.
  • Easy Integration: Integrate SellerMagnetAPI with your existing systems using its simple and well-documented API. Refer to the Documentation and Code Examples for more information.
  • Stay Informed: Monitor the API Status to ensure optimal performance and uptime.

Getting Started

Ready to automate your Amazon bestseller tracking? Here's how to get started:

  1. Visit SellerMagnetAPI and Try Free to create an account.
  2. Obtain your API key from the dashboard.
  3. Explore the Documentation and Code Examples.
  4. Start using the API to retrieve and analyze Amazon bestseller data.

Enhance Your Amazon Strategy with SellerMagnetAPI

Automating Amazon bestseller tracking with SellerMagnetAPI empowers you with the data and insights needed to make informed decisions, optimize your Amazon strategy, and stay ahead of the competition. Whether you're interested in using the Structured Data API or want to find out more about Pricing, we have the information you need. Check out the Glossary for definitions of common terms.

Unlock the power of automated Amazon data analysis and transform your business today. Read our Blog to get the lastest Amazon industry news, and Free Downloads for helpful templates.

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