TariffTrust for ChatGPT
com.tarifftrust/tarifftrust
US import duties and fees for an HTS code, an origin and a value, each with its source.
client:ChatGPT
transport:streamable-http
Install TariffTrust in ChatGPT
Settings → Connectors → Advanced → Developer mode
https://api.tarifftrust.com/mcp/Custom connectors are a paid-plan feature and take a remote URL only. ChatGPT cannot run a packaged server locally. ChatGPT docs