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Amazon Category List API: Department IDs for 24 Marketplaces
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One call returns the department and category ID list you need to power Amazon product search
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INTRODUCTION
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Cross-border e-commerce teams, product research tools and seller dashboards all depend on clean Amazon category data. The catch is that category IDs are locale-specific: the US tree is not the German tree, and Amazon renames departments from time to time. Without a reliable Amazon category list API, every search filter and category picker ends up hard-coded and quickly outdated. This open data interface solves that with a single lightweight reference call.
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FEATURED API
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The "List Amazon Departments & Categories" endpoint is part of Amazon Product Data, Reviews & Deals on Global API Gateway (opendata-api.com). It is an e-commerce data API: pass a country and it returns that marketplace's category IDs and names. 24 marketplaces are selectable, including United States, United Kingdom, Germany, France, Japan, India, Canada, Brazil, Australia and the UAE.
The returned values are designed for the category_id parameter of the Product Search endpoint.
Endpoint:
GET /api/project/amazon/product-category-list
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WHAT CAN BE INTEGRATED
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Per-marketplace taxonomy: fetch the category tree for each country you query
Search filtering: values plug straight into the category_id filter of Amazon product search
One-request reference data: the whole department list for a marketplace in a single call
Category pickers: refresh internal dropdowns when Amazon renames departments
Slug validation: check category values before scheduling search crawls
Multi-country mapping: keep category mappings aligned per locale
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USE CASES
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[1] Product research and selection tools
Sync Amazon's category tree into an internal taxonomy for search filtering
Let users browse departments before running keyword searches
[2] Seller tools
Build category pickers that only offer valid category_id values
Keep listings research aligned with each country's current departments
[3] Multi-marketplace price and trend monitoring
Maintain category mappings per country as you expand to new sites
Refresh mappings on a schedule to catch renamed departments
[4] Data pipelines and crawlers
Validate category slugs before scheduling search crawls
Avoid wasted requests caused by outdated IDs
[5] Content and deal sites
Organize product feeds by official Amazon departments
Pair with the Best Sellers guide to track category rankings
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PRICING & GETTING STARTED
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One unified API Key, pay-as-you-go with credits; different endpoints consume different amounts of credits
Sign up and get 100 free credits, no credit card required
Credits never expire; payment goes through Stripe, and unused credits are refundable
The online testing tool on the documentation page lets you pick a country and run the request right in your browser, with a ready-made curl example
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CONCLUSION
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If you build on Amazon data, a correct category list is the foundation of every filter and crawl. Try the Amazon Category List API free and check the docs here:
https://opendata-api.com/en/amazon/product-category-list.html