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Dev tools · April 30, 2025

TC

Tariff Calculator for Amazon

I made a simple tariff calculator extension for Amazon. It queries gemini flash 2.0 to determine the category, and then matches it with the corresponding tariff category. Fun quick hack – it does brick a little – but the majority of the code was cobbled by a first pass of Claude Code Repo is here: https://github.com/mergd/amzn-tariff

In plain words

Tariff Calculator for Amazon is a browser extension that helps users understand import duties on Amazon products. It uses AI to identify product categories and automatically matches them with applicable tariff rates. The tool is designed for shoppers concerned about hidden tariff costs, though the maker notes it occasionally has performance issues. The extension is open-source and available on GitHub.

written from the facts on this page · September 2026

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