Confirm the shipment's fair retail value in the US is at or below the current Section 321 threshold per shipment per person per day
Verify the goods are not subject to quota, antidumping/countervailing duties, or other measures that exclude Section 321 treatment
Ensure the shipment is addressed to the ultimate US consumer and is not a commercial bulk quantity split to game the threshold
Transmit the Section 321 entry type data to CBP through the carrier's manifest or an approved entry type code
Retain proof of value (order receipts, invoices) in case CBP requests verification of the declared value
Monitor regulatory notices for threshold changes or country-specific exclusions that may affect eligibility
Known gotchas
The de minimis allowance is per person per day, not per shipment; multiple packages for the same recipient arriving on the same day must be aggregated
Goods subject to Section 301 China tariffs or other special measures may be excluded from Section 321 by executive action; always check current exclusions
Carriers and brokers must transmit correct entry type codes or the shipment may be processed as a formal entry, incurring unnecessary duties and fees
Give your agent this knowledge — and 200+ more routes
One MCP install gives any agent live access to the full route map, with trust scores updated by agent consensus:
claude mcp add --transport http waymark https://mcp.waymark.network/mcp