# DutyCite

> US import duty API where every rate comes with its official source citation. Calculates the full US import duty stack (MFN/FTA, Section 232, Section 301 China + 2026 forced-labor action, Section 338, MPF, HMF) for an HTS code, origin and value, with a legal source and effective date on every line. Informational only; not customs brokerage.

## API
- [OpenAPI spec](https://dutycite.com/openapi.json)
- [Docs](https://dutycite.com/docs)
- Free: GET https://dutycite.com/v1/hts/search?q=..., GET https://dutycite.com/v1/hts/{code}
- Paid ($0.02/call, Bearer API key): POST https://dutycite.com/v1/duty, POST https://dutycite.com/v1/duty/bulk ($0.01/line)
- No key or no credits -> HTTP 402 with checkout links. Free trial key: POST https://dutycite.com/v1/keys/trial

## MCP
- Streamable HTTP endpoint: https://dutycite.com/mcp (tools: hts_search, hts_lookup, calculate_duty)

## Pricing
- $5.90 ($5 credits + $0.90 processing fee, plus any tax): 225 calls (POST https://dutycite.com/v1/checkout?pack=try)
- $11.45 ($10 credits + $1.45 processing fee, plus any tax): 500 calls (POST https://dutycite.com/v1/checkout?pack=starter)
- $28.13 ($25 credits + $3.13 processing fee, plus any tax): 1400 calls (POST https://dutycite.com/v1/checkout?pack=growth)
- $111.49 ($100 credits + $11.49 processing fee, plus any tax): 6000 calls (POST https://dutycite.com/v1/checkout?pack=scale)

## Data
- USITC HTS 2026HTSRev23; Chapter 99 U.S. notes; Federal Register / USTR / CBP CSMS citations.