Compile all required documents: commercial invoice, packing list, bill of lading or AWB, certificate of origin, and any applicable import permits or licenses
Prepare a cover sheet or structured data file summarizing HTS classifications, declared values, quantities, and special duty program claims for each line item
Transmit the package to the customs broker via secure file transfer or their client portal well before the estimated arrival so they can file pre-arrival if applicable
Confirm receipt and that the broker has sufficient data to complete the entry without returning for missing information
Remain available to respond to broker queries about product descriptions, end use, or valuation method within a short turnaround to avoid arrival-holds
Review the entry summary filed by the broker for accuracy before it is submitted to CBP to catch any misclassification or valuation errors
Known gotchas
Waiting until cargo arrives to send documents to the broker forfeits any benefit of pre-arrival processing programs that allow cargo release before physical arrival
Providing incomplete or preliminary invoices to meet timing, with the intent to correct later, can result in entry errors that trigger examination or post-entry audits
The importer of record — not the broker — is legally liable for the accuracy of the entry; reviewing broker filings before submission is an importer's compliance obligation
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