Trade Preferential

USMCA and FTA qualification pre-check: rule-of-origin lookup, tariff shift analysis, and regional value content guidance.

You connect this skill to Claude or ChatGPT as an MCP server and then ask in your own words — there is no Proofwork application to log into. Its tools return reference data: candidate options, evidence cards, ruling precedents and the instructions for reading them, so your assistant can reason through each decision step by step and cite what it relied on. Proofwork never calls a model and never sees your conversation.