Trade & Logistics

TariffSync

Real-Time U.S. Import Tariff API

A production-ready REST API platform that delivers instant, accurate tariff calculations across 19,000+ HTS codes and 180+ countries — replacing hours of manual research with a single API call.

TariffSync hero image

// the problem

Challenge

U.S. importers face a $47B annual problem: tariff miscalculations from navigating 19,000+ Harmonized Tariff Schedule codes, 180+ country-specific trade agreements, and constantly shifting supplementary duties (Section 301/232). Existing enterprise solutions take 6+ months to implement while manual processes cause 5-40% margin erosion and CBP penalties.

// what we built

Solution

TariffSync provides a developer-first REST API with hybrid product classification combining rule-based matching, intelligent keyword search, and official data source fallback. Multi-level caching delivers near-instant response times. Automated data synchronization ensures accuracy with official sources. Tiered rate limiting, API key authentication, and comprehensive audit logging make it enterprise-ready.

// shipped

Key features

  • Real-time tariff rate calculation
  • Hybrid product classification engine
  • Multi-country trade agreement support
  • Supplementary duty automation (301/232)
  • Multi-level caching layer
  • API key authentication with secure hashing
  • Tiered rate limiting and usage tracking
  • Automated regulatory data synchronization
  • Comprehensive audit logging
  • IP whitelist for enterprise customers

// stack.json

Tech stack

The exact tools shipping this product in production.

  • TypeScript
  • Node.js
  • Express
  • PostgreSQL
  • Redis
  • Docker
  • AWS ECS
  • Terraform
  • Jest
  • Joi

// system.diagram()

Architecture

Three-tier API architecture with hybrid classification engine and multi-level caching for near-instant tariff lookups

REST API Validated request Cache check Classify HTS lookup Fallback Rate calc Client Apps frontend API Gateway backend Tariff Calculator service Product Classifier ai PostgreSQL database Cache Layer cache USITC API external
  • frontend
  • backend
  • service
  • ai
  • database
  • cache
  • external

// receipts

Results

  • 19,000+ HTS codes with official source accuracy
  • Near-instant cache responses, sub-second database lookups
  • High-throughput request capacity per instance
  • 180+ countries with FTA/GSP rate handling
  • Section 301/232 supplementary duty automation
  • Extensive proprietary classification mappings
  • Rapid developer integration vs months-long competitor onboarding
  • Automated data sync for real-time regulatory updates
19,000+ official codes
HTS Codes
Near-instant lookups
Response Time
High-volume capacity
Throughput
Official source verified
Accuracy
180+ with trade agreements
Countries
High-accuracy product matching
Classification

// next()

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