The API for international trade.
For freight forwarders, customs brokers, 3PLs, and importers/exporters. Call it from your code or AI agent to:classify products, calculate duties, check anti-dumping exposure, extract documents, prepare filings, screen parties, track shipments, and audit invoices
Get your operations ready for AI with us.
Built by founders from logistics and enterprise tech, for teams at:
Build on top, not from scratch
We've turned the complex parts of international trade into one callable API.
International trade has a foundational layer every team needs but no team should have to rebuild. Things like HTS classification, duty calculations, AD/CVD rates, party screening, document extraction, entry preparation, shipment tracking, and more.
One key, one SDK, every trade capability — under a single API. You, or your AI agent, can connect in seconds.
AI expanded what your team can build. Save your tokens for what makes you different.
Customs & compliance
Classification, duties, and AD/CVD — with citations.
Documents & data
Documents in, structured trade data out.
Operations
What's required, missing, or late on every shipment.
Compliance & finance
Screen restricted parties and audit carrier invoices.
Customs & compliance
Filing-ready entries, drafted automatically.
Tandom drafts ISF 10+2, CBP 7501, and 3461 from any shipment data. Classification, the full duty stack (MFN, 232 / 301 / 122, AD/CVD), and case-level matches arrive on the form, every line citing the Federal Register, HTSUS, or CBP CROSS. Your team validates and files.
Try them for free:
Cited: 57 FR 29702 (1992 order), 87 FR 7975 (2022 continuation)
China → Long Beach · Ocean FCL · ETA Apr 30
- Commercial invoiceApr 24
HTS · value · parties · INCOTERMS
- Packing listApr 25
weights · marks · cartons
- Bill of LadingDue Apr 29
carrier · master BL # · vessel
- ISF 10+2Filed when BOL lands
auto-populated from above
- CBP 7501Awaiting BOL
auto-populated · ready on release
Apr 30
24 h pre-lading
May 9
post-release
Mar 9, 27
standard
Documents & data
Know what's required, what's missing, and when it's due.
For any shipment (mode, lane, HTS), Tandom tells you which documents are needed (commercial invoice, BOL, packing list, certificates), the fields each requires, and the filing windows that gate them (ISF 24h pre-lading, 7501 within 10 days).
As documents arrive, Tandom extracts the fields, flags what's missing, and drafts the entry packet.
Operations
Your inbox, structured by shipment.
Forwarding runs on email. Thousands a day. Tandom reads each one, extracts the fields (BOL #, container, vessel, ETA, invoice line items), and ties it to the right shipment.
Your team, or your AI, sees a clean picture of what's landed, what's in flight, and what's running late. They handle replies; Tandom handles triage.
- Master BOL — vessel COSCO Pride departs Apr 282h agoops@coscoshipping.comSHIP-2026-0429-CNBOL #COSU1234567vesselcontainer 40' HC
- Vessel update — ETA pushed +2d6h agoforwarder@xyz-logistics.comSHIP-2026-0428-DEnew ETA May 6vesselvoyage #
- Final commercial invoice + packing list1d agoexports@shanghai-steel.cnSHIP-2026-0427-VN8 line items$48,200 totalINCOTERMS FOB
- Re: arrival notice — please confirm1d agodispatch@portlb.comAwaiting match
Master BOL · SHIP-2026-0430-CN
ETA Apr 30 · ISF window opens in 2 days
BIS Entity List
Manufacturer Jiangsu Pipe Industry Ltd. appears on the Entity List (15 CFR Part 744, Supp. 4).
Cited: 89 FR 21458 (Mar 27, 2024) · review for license requirement before release.
Screened Apr 28, 2026 · 4 parties × 4 lists
| Party | SDN | UFLPA | Entity | DPL |
|---|---|---|---|---|
Shanghai Steel Trading Co. Shipper | ||||
Pacific Imports LLC Consignee | ||||
Jiangsu Pipe Industry Ltd. Manufacturer | ||||
COSCO Shipping Lines Carrier |
Compliance & finance
Every party screened against every list, with the citation.
Tandom checks shipper, consignee, manufacturer, and carrier against SDN, OFAC, UFLPA, BIS Entity List, and Denied Persons List, on every entry. Matches surface with primary-source citations, so reasonable-care diligence is on file before CBP asks.
On the finance side, three-way invoice audit and per-shipment reconciliation flag carrier overcharges before they hit your GL.
Every operator, their own trade desk.
In any AI chat. In our hosted apps. In the spreadsheet and inbox you already use. Or in the code your team builds.
Plug Tandom into your AI.
Install Tandom in any AI chat — Claude, ChatGPT, Gemini, Cursor, whatever you already use. This isn't your AI guessing from training data. Tandom plugs in as a tool: your AI calls our API for the rates, codes, and rulings it needs, then writes you the answer. The numbers come back deterministic and cited — same inputs, same answer, every time. Every line traces back to a Federal Register notice, an HTSUS heading, or a CBP CROSS ruling you can show at filing.And when you're ready, install Tandom alongside Gmail, Drive, and Slack — your AI orchestrates them into real workflows: pull an invoice from your inbox, run it through Tandom, drop the result in Drive, all in one chat.Connect Tandom to your AI See agent scenarios
Or just open one of our apps.
Hosted web apps for one-off lookups — free, unlimited, no setup, no API key.Try them for free now:Tariff calculator AD/CVD intelligence
Use Tandom directly in your spreadsheet.
Layer Tandom intelligence onto the shipment tracker your ops team already maintains. =TANDOM.NEXT_DEADLINE(…), =TANDOM.MISSING_DOCS(…), =TANDOM.STATUS(…) — fill down once, every row stays current. Excel and Google Sheets, same plug-in.Beta — interested? Get in touch
And in your inbox.
Tandom reads the shipping email your team is already getting — BOLs, commercial invoices, packing lists, arrival notices, ISF confirmations. Each document arrives in your sidebar already extracted, cross-validated, and ready to file. One click to accept and the right row in your shipment tracker updates itself. Outlook and Gmail.Beta — interested? Get in touch
Please find attached the house bill of lading and commercial invoice for the Shanghai → Los Angeles shipment under PO 44719, on board MV COSCO Pride voyage 047E. Container COSU 6379640 (40' HC) was loaded on Apr 24; ETD Apr 30, ETA May 14.
ISF on file. Please confirm receipt at your earliest.
Or build the automations and custom apps you always wanted.
Internal tools, customer portals, Slack bots, batch workflows — anything that can call an API. Your team builds the surface; Tandom handles the trade work — classification, duties, document extraction, milestone monitoring, party screening, freight audit. Or skip building entirely and let an AI agent drive.Browse the APIs See agent scenarios
Every answer comes with receipts.
Built for regulated work, where the answer matters as much as the speed.
Every answer cited
Classifications cite CBP rulings. Duties cite the HTSUS. AD/CVD cites the Federal Register. One click to the source on every result.
Modules compose
Extract → classify → calculate → match. Chain APIs in a single request, traced end-to-end.
Continuously refreshed
Federal Register, CBP CSMS, scope rulings, CIT decisions — ingested daily. The next refresh tells you when something changed.
Agent-callable by design
API-first, structured outputs, primary-source citations baked in. Built for AI from day one.
Trusted by teams at:
About us
Tandom is built by experienced logistics founders, previously backed by UPS, Mercado Libre, and other top venture funds. We've spent years automating enterprise workflows. Tandom is the foundational trade infrastructure layer we wish existed back when we were running ops ourselves.
Learn more about usBacked by leaders from:
FAQ
Common questions about Tandom
Tandom is a platform of API-first products for international trade — customs classification, duty calculation, AD/CVD matching, entry-form automation, document extraction, invoice audit, and more. Use them as apps, call them from your TMS or ERP, query them from Excel, or plug them into an AI agent over MCP.
Every Tandom API is callable from any system with HTTP access — CargoWise, Descartes, NetSuite, SAP, Oracle, or custom-built platforms. Tandom also ships an Excel plugin for spreadsheet-native teams and an MCP server for AI agents.
Every Tandom API is exposed through an MCP server. AI agents can call classification, duty calc, AD/CVD match, document extraction, invoice audit, and more directly — completing an entry, quoting a shipment, or auditing an invoice without leaving the conversation. Read the agent playbook →
Ready to get started?
Create a free account and use the full Tandom suite from one workspace.
The whole suite, one sign-in
Duty calculator, AD/CVD intelligence, HTS classifier, regulatory data, broker workspace, document intelligence, customs filing builder — every Tandom tool, on one account.
API access, free tier
Generate keys for every Tandom engine and drop them into your TMS, broker software, or AI agent. The MCP server uses the same key.
Free · no credit card · ~30 seconds
Built for teams at: