fourzerotwo-si Uk Trade Tariff API
UK Trade Tariff: UK commodity codes, import duties and controls by country of origin, quotas, geographical areas and HMRC monthly customs exchange rates.
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OpenAPI Specification
openapi: 3.2.0
info:
title: Fourzerotwo Si Uk Trade Tariff API
version: 1.1.0
contact:
url: https://fourzerotwo.si
description: 'Operations tagged uk-trade-tariff across 2 of this provider''s published API definitions: openapi.json, fourzerotwo-si-openapi.json. Each path carries the servers of the definition it was published in.'
servers:
- url: https://fourzerotwo.si
tags:
- name: uk-trade-tariff
description: 'UK Trade Tariff: UK commodity codes, import duties and controls by country of origin, quotas, geographical areas and HMRC monthly customs exchange rates.'
paths:
/v1/uk-trade-tariff/search:
get:
operationId: uk_trade_tariff__search
summary: 'UK Trade Tariff: Find a commodity code'
description: 'Candidate commodity codes, headings and chapters for a product description ("roasted coffee", "lithium battery"), best match first. Price: $0.003 USDC per call via x402. Free within the daily allowance with a free key.'
tags:
- uk-trade-tariff
externalDocs:
url: https://fourzerotwo.si/apis/uk-trade-tariff/search
parameters:
- name: q
in: query
required: true
description: Product description
schema:
type: string
maxLength: 200
example: bicycle
- name: limit
in: query
required: false
description: Max results (default 15, max 30)
schema:
type: integer
responses:
'200':
description: The data (paid, or free tier).
content:
application/json: {}
'402':
$ref: '#/components/responses/PaymentRequired'
'400':
$ref: '#/components/responses/Error'
'404':
$ref: '#/components/responses/Error'
'502':
$ref: '#/components/responses/Error'
security:
- {}
- freeKey: []
x-price-usd: '0.003000'
x-free-tier: free
x-mcp-tool: uk-trade-tariff__search
servers:
- url: https://fourzerotwo.si
/v1/uk-trade-tariff/commodity:
get:
operationId: uk_trade_tariff__commodity
summary: 'UK Trade Tariff: Commodity duties & measures'
description: '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. Price: $0.002 USDC per call via x402. Free within the daily allowance with a free key.'
tags:
- uk-trade-tariff
externalDocs:
url: https://fourzerotwo.si/apis/uk-trade-tariff/commodity
parameters:
- name: code
in: query
required: true
description: Commodity code, 6–10 digits (padded to 10), e.g. 0901210000
schema:
type: string
maxLength: 14
example: 0901210000
- name: country
in: query
required: false
description: Country of origin, ISO alpha-2 (e.g. CN, US, IN) — filters measures to those that apply
schema:
type: string
maxLength: 2
example: IN
responses:
'200':
description: The data (paid, or free tier).
content:
application/json: {}
'402':
$ref: '#/components/responses/PaymentRequired'
'400':
$ref: '#/components/responses/Error'
'404':
$ref: '#/components/responses/Error'
'502':
$ref: '#/components/responses/Error'
security:
- {}
- freeKey: []
x-price-usd: '0.002000'
x-free-tier: free
x-mcp-tool: uk-trade-tariff__commodity
servers:
- url: https://fourzerotwo.si
/v1/uk-trade-tariff/heading:
get:
operationId: uk_trade_tariff__heading
summary: 'UK Trade Tariff: Heading'
description: 'A 4-digit heading and every commodity code under it, with indents and whether each is declarable. Price: $0.002 USDC per call via x402. Free within the daily allowance with a free key.'
tags:
- uk-trade-tariff
externalDocs:
url: https://fourzerotwo.si/apis/uk-trade-tariff/heading
parameters:
- name: code
in: query
required: true
description: 4-digit heading, e.g. 0901
schema:
type: string
maxLength: 4
example: 0901
responses:
'200':
description: The data (paid, or free tier).
content:
application/json: {}
'402':
$ref: '#/components/responses/PaymentRequired'
'400':
$ref: '#/components/responses/Error'
'404':
$ref: '#/components/responses/Error'
'502':
$ref: '#/components/responses/Error'
security:
- {}
- freeKey: []
x-price-usd: '0.002000'
x-free-tier: free
x-mcp-tool: uk-trade-tariff__heading
servers:
- url: https://fourzerotwo.si
/v1/uk-trade-tariff/quotas:
get:
operationId: uk_trade_tariff__quotas
summary: 'UK Trade Tariff: Tariff-rate quotas'
description: 'Quota definitions with status (open, exhausted, critical), initial volume, remaining balance and validity, by order number or country of origin. Price: $0.002 USDC per call via x402. Free within the daily allowance with a free key.'
tags:
- uk-trade-tariff
externalDocs:
url: https://fourzerotwo.si/apis/uk-trade-tariff/quotas
parameters:
- name: order_number
in: query
required: false
description: 6-digit quota order number
schema:
type: string
maxLength: 6
example: '050006'
- name: country
in: query
required: false
description: Country of origin, ISO alpha-2
schema:
type: string
maxLength: 2
- name: status
in: query
required: false
description: open, exhausted, blocked, critical or not_exhausted
schema:
type: string
maxLength: 16
- name: page
in: query
required: false
description: Page
schema:
type: integer
responses:
'200':
description: The data (paid, or free tier).
content:
application/json: {}
'402':
$ref: '#/components/responses/PaymentRequired'
'400':
$ref: '#/components/responses/Error'
'404':
$ref: '#/components/responses/Error'
'502':
$ref: '#/components/responses/Error'
security:
- {}
- freeKey: []
x-price-usd: '0.002000'
x-free-tier: free
x-mcp-tool: uk-trade-tariff__quotas
servers:
- url: https://fourzerotwo.si
/v1/uk-trade-tariff/areas:
get:
operationId: uk_trade_tariff__areas
summary: 'UK Trade Tariff: Countries & groups'
description: 'Tariff geographical areas: countries and the groups used in measures (e.g. 1011 ERGA OMNES, 1013 European Union, trade agreements), with group members. Price: $0.002 USDC per call via x402. Free within the daily allowance with a free key.'
tags:
- uk-trade-tariff
externalDocs:
url: https://fourzerotwo.si/apis/uk-trade-tariff/areas
parameters:
- name: kind
in: query
required: false
description: all, countries or groups
schema:
type: string
maxLength: 10
example: groups
- name: q
in: query
required: false
description: Filter by name or id
schema:
type: string
maxLength: 80
responses:
'200':
description: The data (paid, or free tier).
content:
application/json: {}
'402':
$ref: '#/components/responses/PaymentRequired'
'400':
$ref: '#/components/responses/Error'
'404':
$ref: '#/components/responses/Error'
'502':
$ref: '#/components/responses/Error'
security:
- {}
- freeKey: []
x-price-usd: '0.002000'
x-free-tier: free
x-mcp-tool: uk-trade-tariff__areas
servers:
- url: https://fourzerotwo.si
/v1/uk-trade-tariff/exchange-rates:
get:
operationId: uk_trade_tariff__exchange_rates
summary: 'UK Trade Tariff: HMRC customs exchange rates'
description: 'HMRC''s monthly exchange rates used to convert invoice values for customs and import VAT, units per £1. Price: $0.002 USDC per call via x402. Free within the daily allowance with a free key.'
tags:
- uk-trade-tariff
externalDocs:
url: https://fourzerotwo.si/apis/uk-trade-tariff/exchange-rates
parameters:
- name: year
in: query
required: true
description: Year
schema:
type: integer
example: 2026
- name: month
in: query
required: true
description: Month 1–12
schema:
type: integer
example: 9
- name: currency
in: query
required: false
description: 'ISO currency code, e.g. USD (default: all)'
schema:
type: string
maxLength: 3
example: USD
responses:
'200':
description: The data (paid, or free tier).
content:
application/json: {}
'402':
$ref: '#/components/responses/PaymentRequired'
'400':
$ref: '#/components/responses/Error'
'404':
$ref: '#/components/responses/Error'
'502':
$ref: '#/components/responses/Error'
security:
- {}
- freeKey: []
x-price-usd: '0.002000'
x-free-tier: free
x-mcp-tool: uk-trade-tariff__exchange-rates
servers:
- url: https://fourzerotwo.si
components:
responses:
PaymentRequired:
description: x402 payment required. The body (also base64 in the PAYMENT-REQUIRED header) lists accepted payments.
headers:
PAYMENT-REQUIRED:
schema:
type: string
description: Base64 JSON x402 v2 PaymentRequired
content:
application/json:
schema:
type: object
properties:
x402Version:
type: integer
error:
type: string
accepts:
type: array
items:
type: object
Error:
description: 400 = invalid input, 404 = not found at the source, 502 = the source failed. Never charged.
content:
application/json:
schema:
type: object
properties:
error:
type: string
charged:
type: boolean
securitySchemes:
freeKey:
type: apiKey
in: header
name: X-API-Key
description: Optional free key (fzt_…) for the free tier.
x-refined-from:
- openapi.json
- fourzerotwo-si-openapi.json