lookup-bilateral-tariff

Use this skill when the user asks what tariff a specific product (a 6-digit HS subheading) pays when country A imports it from country B, or whether a trade agreement lowers that rate.

Entitlement: this operation is Pro-gated (entitlement tier ≥ 1). API Starter and API Business keys qualify. A free caller receives empty data with upstreamUnavailable: true, or 403 when the gateway enforces the premium RPC.

What the rate does not include. TRAINS records the MFN schedule and the preferential schedules each importer files. It does not record unilateral additional duties (US Section 301, 232 or IEEPA tariffs), anti-dumping or countervailing duties, or safeguards. For pairs subject to those measures, say that the rate understates what importers pay. For the current US duty on a product, including Section 301 and 232 duties, use lookup-us-import-duty instead; TRAINS has no US preferences after 2021.

Authentication

Server-to-server callers (agents, scripts, SDKs) MUST present an API key in the X-WorldMonitor-Key header. Authorization: Bearer … is for MCP/OAuth or Clerk JWTs — not raw API keys.

X-WorldMonitor-Key: wm_0123456789abcdef0123456789abcdef01234567

Issue a key at https://www.worldmonitor.app/pro.

Endpoint