Cross-Border Commerce
API Guides
API integration guides, HS classification tutorials, and trade compliance resources for developers and businesses.
All Articles
Why 9 Fields Beat AI Guessing: The Science Behind HS Code Classification
How POTAL achieves 100% HS Code accuracy using codified WCO rules instead of LLM guessing. Ablation study results from 23,300 pipeline runs.
POTAL vs Avalara vs Zonos: Customs Duty API Comparison (2026)
Feature-by-feature comparison of customs duty APIs: country coverage, HS classification approach, pricing, and developer experience.
How to Integrate POTAL Landed Cost API: Quick Start for Developers
Get up and running with the POTAL API in 5 minutes. API key setup, first calculation, SDK installation, MCP server config, and production checklist.
Total Landed Cost API: How to Calculate Duties, Taxes & Fees for 240 Countries
Calculate total landed cost via API for 240 countries. Covers duty rates, VAT/GST, customs fees, FTA savings, and de minimis — with code examples.
HS Code Classification API: 9-Field System That Achieves 100% Accuracy
How POTAL classifies products using 592 codified WCO rules, 9 input fields, and 0-2 AI calls. 100% accuracy verified across 23,300 ablation tests.
De Minimis Thresholds API: Auto-Detect Duty-Free Shipments for 240 Countries
POTAL automatically applies de minimis rules for 240 countries. Covers US CN/HK $0 change, EU IOSS, Type 86, and API integration examples.
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