trade by fourzerotwo

UK Trade Tariff

HMRC's UK Integrated Online Tariff, flattened for agents: find a commodity code from a product description, read its duties (third-country, preferential, additional), VAT, document and licence requirements, filtered to a country of origin, and check tariff-rate quota balances. Classification help only: not a binding ruling.

cost: Free every endpoint, within the daily allowance
after that: from $0.002 / call · card or USDC
endpoints: 6

No signup needed over MCP: 100 free calls a day, or 500 with a free key.

Countries & groups Free

Tariff geographical areas: countries and the groups used in measures (e.g. 1011 ERGA OMNES, 1013 European Union, trade agreements), with group members.

cost: Free then $0.002 / call
MCP tool: uk-trade-tariff__areas
method: GET

Free up to 100 calls a day over MCP (500 with a free key), then $0.002 per call by card credit or USDC. Free key · Pay by card

GET https://fourzerotwo.si/v1/uk-trade-tariff/areas

Param	Type	Description
kind?	string	all, countries or groups
q?	string	Filter by name or id

# free: send a free key from https://fourzerotwo.si/free
curl -H "X-API-Key: fzt_…" "https://fourzerotwo.si/v1/uk-trade-tariff/areas"

# no key: returns 402 with the price, for x402 agents
curl -i "https://fourzerotwo.si/v1/uk-trade-tariff/areas"

by fourzerotwo

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Commodity duties & measures Free

One commodity code: description, section/chapter/heading, third-country duty and every import/export measure (preferential rates, VAT, additional duties, controls with document codes). Give country to keep only what applies to that origin.

cost: Free then $0.002 / call
MCP tool: uk-trade-tariff__commodity
method: GET

Free up to 100 calls a day over MCP (500 with a free key), then $0.002 per call by card credit or USDC. Free key · Pay by card

GET https://fourzerotwo.si/v1/uk-trade-tariff/commodity

Param	Type	Description
code	string	Commodity code, 6–10 digits (padded to 10), e.g. 0901210000
country?	string	Country of origin, ISO alpha-2 (e.g. CN, US, IN) — filters measures to those that apply

# free: send a free key from https://fourzerotwo.si/free
curl -H "X-API-Key: fzt_…" "https://fourzerotwo.si/v1/uk-trade-tariff/commodity?code=0901210000"

# no key: returns 402 with the price, for x402 agents
curl -i "https://fourzerotwo.si/v1/uk-trade-tariff/commodity?code=0901210000"

by fourzerotwo

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HMRC customs exchange rates Free

HMRC's monthly exchange rates used to convert invoice values for customs and import VAT, units per £1.

cost: Free then $0.002 / call
MCP tool: uk-trade-tariff__exchange-rates
method: GET

Free up to 100 calls a day over MCP (500 with a free key), then $0.002 per call by card credit or USDC. Free key · Pay by card

GET https://fourzerotwo.si/v1/uk-trade-tariff/exchange-rates

Param	Type	Description
year	integer	Year
month	integer	Month 1–12
currency?	string	ISO currency code, e.g. USD (default: all)

# free: send a free key from https://fourzerotwo.si/free
curl -H "X-API-Key: fzt_…" "https://fourzerotwo.si/v1/uk-trade-tariff/exchange-rates?year=2026&month=9"

# no key: returns 402 with the price, for x402 agents
curl -i "https://fourzerotwo.si/v1/uk-trade-tariff/exchange-rates?year=2026&month=9"

by fourzerotwo

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Heading Free

A 4-digit heading and every commodity code under it, with indents and whether each is declarable.

cost: Free then $0.002 / call
MCP tool: uk-trade-tariff__heading
method: GET

Free up to 100 calls a day over MCP (500 with a free key), then $0.002 per call by card credit or USDC. Free key · Pay by card

GET https://fourzerotwo.si/v1/uk-trade-tariff/heading

Param	Type	Description
code	string	4-digit heading, e.g. 0901

# free: send a free key from https://fourzerotwo.si/free
curl -H "X-API-Key: fzt_…" "https://fourzerotwo.si/v1/uk-trade-tariff/heading?code=0901"

# no key: returns 402 with the price, for x402 agents
curl -i "https://fourzerotwo.si/v1/uk-trade-tariff/heading?code=0901"

by fourzerotwo

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Tariff-rate quotas Free

Quota definitions with status (open, exhausted, critical), initial volume, remaining balance and validity, by order number or country of origin.

cost: Free then $0.002 / call
MCP tool: uk-trade-tariff__quotas
method: GET

Free up to 100 calls a day over MCP (500 with a free key), then $0.002 per call by card credit or USDC. Free key · Pay by card

GET https://fourzerotwo.si/v1/uk-trade-tariff/quotas

Param	Type	Description
order_number?	string	6-digit quota order number
country?	string	Country of origin, ISO alpha-2
status?	string	open, exhausted, blocked, critical or not_exhausted
page?	integer	Page

# free: send a free key from https://fourzerotwo.si/free
curl -H "X-API-Key: fzt_…" "https://fourzerotwo.si/v1/uk-trade-tariff/quotas"

# no key: returns 402 with the price, for x402 agents
curl -i "https://fourzerotwo.si/v1/uk-trade-tariff/quotas"

by fourzerotwo

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Find a commodity code Free

Candidate commodity codes, headings and chapters for a product description ("roasted coffee", "lithium battery"), best match first.

cost: Free then $0.003 / call
MCP tool: uk-trade-tariff__search
method: GET

Free up to 100 calls a day over MCP (500 with a free key), then $0.003 per call by card credit or USDC. Free key · Pay by card

GET https://fourzerotwo.si/v1/uk-trade-tariff/search

Param	Type	Description
q	string	Product description
limit?	integer	Max results (default 15, max 30)

# free: send a free key from https://fourzerotwo.si/free
curl -H "X-API-Key: fzt_…" "https://fourzerotwo.si/v1/uk-trade-tariff/search?q=bicycle"

# no key: returns 402 with the price, for x402 agents
curl -i "https://fourzerotwo.si/v1/uk-trade-tariff/search?q=bicycle"

by fourzerotwo

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Contains public sector information licensed under the Open Government Licence v3.0. Source: UK Trade Tariff, HM Revenue & Customs. Not legal advice: check classification with HMRC before declaring goods.