Get your API key

Create a free API key to start monitoring tariff rate changes. No credit card required.

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Quick Start

$ curl https://tariffdiff.com/api/v1/diffs \
  -H "x-api-key: "

Next steps

  • Save your API key in a secure location (e.g. environment variable)
  • Pass it as the x-api-key header on all requests
  • Create a watchlist with POST /api/v1/watchlists
  • Start receiving webhook alerts when tariff rates change
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