HS Codes Classifier turns any product description into an HS (Harmonized System) customs code. Send "wireless bluetooth headphones" → get back HS Code 8518.30, Chapter 85, Confidence 0.9. Built on Cloudflare Workers + x402 protocol: 1. AI agent calls endpoint 2. Gets HTTP 402 3. Pays $0.01 USDC on Base 4. Gets result No signup. No API keys. Available as MCP server + REST API + Batch API (100 items per call). Pricing: • Free: 50/day • Pro: $5/month — 1,000 requests • $0.01 per request